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CURRICULUM VITAE
M. SIVAGURU
Senior Research Scientist
Albany Molecular Research Center
Alexandria Knowledge Park, Genome Valley
Turkapally, Shameerpet,
Hyderabad, India
E-mail: sivaguru1980@gmail.com
Mobile: +919791711151
CAREER OBJECTIVES
To be an active participant in Research and Development with new trends of technology
on synthetic organic chemistry and medicinal chemistry, where I can contribute my best
efforts to reach the apex my career.
ACADEMIC RECORDS
Oct. 2008-June 2014 Ph.D Synthetic Organic Chemistry with four years‟ experience in
API industry
Bharathidasan University, Trichirappalli, Tamil Nadu, India
Thesis Title: “Studies on the reactions of diazocarbonyl
compounds: Synthesis and characterization of macrodiolide,
indole, indene and furanone derivatives.”
Defended thesis on 7th
May 2015.
Jun. 2003-May 2005 M. Sc. Organic Chemistry, Department of Organic Chemistry,
University of Madras, Guindy Campus, Chennai 600025, Tamil
Nadu, India.
Project with Prof. R. Raghunathan, University of Madras,
Chennai, Project Title: “Synthesis of novel Spiroheterocycle
through 1,3-dipolar cycloaddition”.
Jul. 1999-May 2002 B. Sc. Chemistry, Tagore Arts and Science College, Pondicherry
University, India.
INDUSTRIAL EXPERIENCES
Jun 2016 to till date working as Senior Research Scientist (Scale up process R
& D) in Albany molecular research center, Hyderabad.
Jan 2016 to May 2016 Worked as chemistry subject matter expert in SPi
Technologies, Chennai
Nov. 2014 to Sep 2015 Worked as Research Scientist in Sun Pharmaceuticals
Ltd, Formerly known as Ranbaxy Laboratories, Guragon,
Haryana, India.
Dec. 2006 to Mar. 2008 Worked as a research associate in Cadila
Pharmaceuticals, Bangalore, Karnataka, India.
Jul. 2005 to Nov. 2006 Worked as research executive Cipla Pharmaceuticals,
Bangalore, Karnataka, India.
AWARDS/FELLOWSHIPS
 Awarded Research Fellowship (SRF) by Council for Scientific and Industrial
Research, India (2008-11).
 Awarded Research Fellowship (JRF) by University Grants Commission-
Research Fellow Scheme Meritorious Students, India (2013-14).
 Summer training in chemistry for the pre-final post-graduate Students, during
June-July 2004, Malladi drugs and pharmaceuticals, Eakatuthangal, Chennai-
603102, Tamil Nadu, India.
 Got 2th
rank in M. Sc. Organic Chemistry entrance examination in Madras
University (A state wise entrance examination).
 Got 3rd
rank in B. Sc. Chemistry examination.
RESEARCH PUBLICATIONS
1. Indium(III) chloride catalyzed highly diastereoselective domino synthesis of
indenodithiepines and indenodithiocines, S. Muthusamy, M. Sivaguru, Chem.
Commu. 2015, 51, 707-710.
2. Atom-economical access to highly substituted indenes and Furan-2-ones via
tandem reaction of diazo compounds and propargyl alcohols, S. Muthusamy, M.
Sivaguru Organic Lett. 2014, 16, 4248-4251.
3. Synthesis of conformationally restricted symmetric macrodiolides via
carbonyl ylides, S. Muthusamy, M. Sivaguru, Synthesis, 2013, 45, 2034-2042.
4. Synthesis of conformationally restricted C2 symmetric macrodiolides via head
to tail dimerization of carbonyl ylides, S. Muthusamy, M. Sivaguru,
Tetrahedron Lett., 2013, 54, 6810-6813.
5. Synthesis of novel spiropyrrolidines through (3+2) cyclo addition reactions
with Baylis-Hillman adducts as dipolarophiles, J. Jayashankaran, R.S. Rathna
Durga. , M. Sivaguru, R. Ragunathan, Tetrahedron Lett., 2006, 47, 5535-5538.
6. Synthesis of conformationally restricted macrocyclic bis-cyclopropanes in the
presence of copper catalyst, S. Muthusamy, M. Sivaguru (unpublished result)
7. Efficient approach to arylhydrazones, the precursor for 2,3-substituted indole
synthesis, via diazoamide, S. Muthusamy, M. Sivaguru (unpublished result).
CONFERENCE PAPERS/POSTERS
1. Poster presentation- Seminar on “Current Trends in Organic Synthesis” on June
19, 2013 held at Department of Chemistry, Madurai Kamaraj University,
Madurai, India.
2. Poster presentation- 12th
Chemical Research Society of India (CRSI) National
Symposium in Chemistry, February 4-7, 2010, Indian Institute of Chemical
Technology, Hyderabad, India-
3. Poster presentation- The mid-year meeting of the Chemical Research Society
of India, December 16-17 2011, Department of Chemistry, Pondicherry
University, Pondicherry, India.
4. RTOS-2011 volunteer- National conference on recent trends in organic
synthesis, February 24-26, 2011 held at Bharathidasan University,
Tiruchirappalli, Tamil Nadu, India.
5. National Symposium on “Recent Development in Chemistry” 29th
August, 2011,
School Of Chemistry, Bharathidasan University, Trichirappalli, Tamil Nadu,
India.
6. National Workshop on „Scholarly Information Access‟ on 23-24 October, 2009,
Bharathidasan University, Trichirappalli, Tamil Nadu, India.
TECHNICAL SKILLS
 Experience in handling Bruker 400 MHz NMR spectrometers and familiar with
two-dimensional NMR spectroscopy techniques.
 Experience with HPLC (Agilent)
 FT-IR (Bruker Alpha) and Digital Polarimeter (JASCO).
 Hands-on experience in handling of X-ray package Mercury.
 Expertise in the preparation and purification of organic molecules in mg to gram
scales.
TEACHING EXPERIENCE
Experience in conducting under-graduate level and graduate level laboratory work in
synthetic organic chemistry. Experience in guiding junior researchers, PhD students, M.
Phil. and project students.
API PROJECTS WORKED
Chemistry subject matter expert
I am working as a team leader for a group of 5 members and we are working for the
generation of chemistry research database. My job is to validate the data done by my
group members.
Tenofovir Alefanamide Hemi-Fumarate (anti-retroviral)
I have worked on the process development of tenofovir alefanamide hemi-fumarate. In
this process we have developed a catalyst/ligand free approach which will selectively
give 90 % pure diastereomeric isomer and <10 % of undesired isomer which further
removed during crystallization. In this project we faced problem in isolating hemi-
fumarate form still process are ongoing to get desired hemi-fumarate form.
Anacetrapib
Completed the process development of Anacetrapib (anti-cholesterol).
In this project we avoided the formation desmethyl API impurity by modified process
development to eliminate the impurity completely compared to innovator method. We
achieved 80% overall yield which is 10% more yield compared to other competitors.
Sunitinib & Valsartan
I worked on the process development of Sunitinib and Valsartan during my research
experience on Cadila pharmaceuticals. Our research group successfully carried out
technology transfer and process development on these molecules before the time line.
Donepezil Hydrochloride
In this project I carried out novel route for the formation of piperidone epoxide a key
intermediate for the formation of API which yielded one process patent in this molecule.
Similarly worked on the process development of Gemcitabine, Ezetimibe,
Temozolomide, Montelukest in Cipla pharmaceuticals.
EXPERIENCE IN REACTIONS
1. Synthesis of Boronic acids and Phosphate containing molecules
2. Ring opening of cyclopropane, epoxide.
3. Catalytic Hydrogenation
4. Lewis acid and organometallic reactions
5. Diazocarbonyl compounds and allene derivatives
6. Chiral reduction and Oxidation reactions
7. Bromination, Chlorination reactions
8. LDA, n-butyl Lithium, Grignard reactions, sodium metal, sodium amide,
sodium hydride etc.,
9. Corrosive, lachrymatory and hygroscopic products
10. Having good experience on kilo lab batches
11. Liquid Nitrogen and Dry ice reaction (-76 C)
Personal Profile:
Father‟s Name : Late P. Manickasamy
Date of Birth : 10.09.1980
Nationality : Indian
Marital Status : Married
Languages Known : Tamil & English
Address for communication : 7/4A, Chandra Nivas
Amma Mandapam Road
Srirangam, Trichirappalli-620006.
Tamil Nadu, India.
REFERENCES
Dr. Venkataramana reddy Dr. J. Sony
Senior Research Scientist-1 Senior Research Scientist
Albany Molecular Research Center Ranbaxy Laboratories
Alexandria Knowledge Park, Genome Valley Guragon-122015
Turkapally, Hyderabad, India Haryana, India
venkataramanareddy.yemireddy@amriglobal.com josephsony@yahoo.com
+919610028340 +918285003062
prof. S. Muthusamy Dr. Vinod Acharya
School of Chemistry Group Leader-API R & D
Bharathidasan University Cipla Ltd.
Tiruchirapalli-620024 MIDC Patalganga Dist. Raigad
Tamil Nadu, India Maharashtra -410220
muthu@bdu.ac.in vinodacharya@rediffmail.com
+919442491933 +91880501494
DOCTORAL RESEARCH SUMMARY
In order to form C2 symmetric macrodiolide the required alkyne / alkene tethered diazocarbonyl
compounds 5 were assembled in a step-wise manner. Tandem reaction of -diazocarbonyl
compounds in the presence of rhodium(II) acetate catalyst was demonstrated to furnish
wide range of conformationally restricted C2 symmetric macrodiolides via head to tail
dimerization of carbonyl ylides.
O
O
R2
O
O
O
R1
Me
R2
O
OH
O
R1
Me
R2
O O
R1
Me
O
O
3
R1
, R2
= -(CH2)4-, -(CH2)3-
n = 1-3
toluene
reflux
OH
R2
O
R1
Me
O O O
( )n
( )n
MsN3,Et3N
DCM, rt
8% aqu
KOH
(i) [COCl]2
(ii) i-PrMgBr, THF
MeO2CCH2CO2H
DCM
R3
R3
R2
O
R1
Me
O O O
( )n
R3
N2
+
Rh2(OAc)4
O
O
Me
Me
Me
Me
Me
MeOO
OO
Me
Me
Me
O
O
O
Me
Me
Me
O
O
O
OO
O O
Rh2(OAc)4
R1
, R2
= CH3
n = 1-3
R1
, R2
= CH3
n = 1,3
R1
, R2
= CH3
n = Ar spacer
6 (3 examples)
6 (4 examples) 6 (2 examples)
n = 1-3
O
O
OO
OO
O O
Me
Me
( )n
( )n
( )n
( )n
O
O
Me
Me
Me
Me
Me
MeOO
OO
O
O
( )n
( )n
1 2
45
6
Tetrahedron letters, 2013, 54, 6810-6813
A series of bis-diazocarbonyl compounds 8 were assembled from transesterification reaction of
active methylene 3 with dihydroxy compounds in dry toluene followed by diazo transfer
reaction. Macrodiolides 11/12 incorporating oxa- and dioxa-fused units were synthesized from
bis-diazocarbonyl compounds 8 and bis-aldehyde / bis-olefin 9/10 as precursors to utilize the
bis-cycloaddition approach. Bis-olefin compounds 10 were obtained via Wittig reaction of the
corresponding bis-aldehydes 9. Initially, the reaction of bis-diazocarbonyl compounds 8 with
DMAD / NPM / aldehydes in the presence of rhodium(II) acetate dimer furnished bis-
cycloadduct 13-15.
O
O O O
( )n
toluene
reflux
Et3N, DCM
HO OH
( )n
O O
O O O O O O
( )n
O O
O O O O O O
N2 N2MsN3
O O
OO
Ph3PCH3Br
n-BuLi,THF
( )m
O O( )m
m = 3, 4, 6
n = 2-4, 8 83 7
9 10
Rh2(OAc)4
O
O O
OO
O
OO
O O
( )n
( )m
O
O
O O
OO
O
O
OO
O O
( )n
( )m
Rh2(OAc)4
(3 examples)
OO
OO ( )n
NN OOO
Ph Ph
(3 examples)
NPM
Rh2(OAc)4
O O
O OOO
OO ( )n
O O
O O
DMAD
Rh2(OAc)4
MeO2C CO2Me MeO2C CO2Me O
HH H H** * *
(7 examples)
O
O
O
O
OO
( )n
O O
O O
H H
R R
*
*
ArCHO;
Rh2(OAc)4
O O
O
OO
O
( )n
N2 N2
O
O
n = 2-4
m = 3, 4
n = 2, 3, 8
m = 3, 4, 6
n = 2-4 n = 2-4
n = 2-4
8
1112
13 14 15
Synthesis, 2013, 45, 2034-2042
The required bis-diazocarbonyl compounds 19/22 were also assembled via DCC coupling and
transesterification reaction. Bis-diazocarbonyl compound 24 was synthesized through N-
alkylation of diazoamides 23. After optimization, CuOTf was chosen for the bis-
cyclopropanation reaction between bis-diazocarbonyl compounds 19 and bis-olefin derivatives
11 to furnish conformationally restricted macrodiolide 25/26.
R
O
O
R
OH
O
+ HO OH DCC
O
R
O
( )n
MsN3
Et3N
DCM
O
O O
+
O
O O
O
toluene
( )n
R
O
O
O
R
O
( )n
N2 N2
HO OH
( )n
O O
( )n
MsN3
Et3N
DCM
O
O O
O
O O
( )n
N2 N2
reflux
DCM
19
22
N
N2
O
H
24
Br Br
N N
O O
N2N2
K2CO3/DMF
n = 2-4, 6
n = 3, 6
R = CO2Me, CO2Et, Ph
16 17 18
20 17 21
23
26 (9 examples)
O
O
O
O
O
O
( )m
( )n
O O
19/22
CuOTf
Toluene
R R
( )m
NN
O O
OO
25 (2 examples)
24
CuOTf
Toluene
m =3-6, 8 n =2-4, 6
R = CO2Me, CO2Et, COMe,Ph
( )m
+ +
11
Unpublished results
Reaction of diazoamide 27 was treated with 1 equiv of Grignard reagents to give hydrazone
incorporating oxindole 28 in excellent yield. Similar reaction was performed with diazoester 33
and cyclohexanone diazo compounds 31 to furnish 34/32. Thus, the diazoamide 27 was treated
with 2.5 equiv. Grignard reagents to furnish 2-phenyl-3-azoindole derivative 29 in excellent
yield. Reduction of azo compounds 29 carried out using SnCl2 in AcOH to their respective
amino compounds 30.
N
O
HN
R'
N2
O
rtOMe
OMe
+ R'MgX THF
N
N
O
HN
R'
R
N
N2
O
R
excess R'MgX
THF, 30 °C
1.2 eqiv. R'MgX
THF, 30 °C
N
N
R'
N
R'
R
29 (9 examples)
N
NH2
Me
AcOH
SnCl2
30 (2 examples)
(8 examples)
O
N
N
H
rt
+ R'MgX
THF
O
N2
27 R = H, Allyl,
Me, Et, Bn
28 R' = Ph, i-pr, Cyclohexyl
31 32
33 34
Unpublished results
An atom-economical facile synthesis of highly substituted as well as conjugated indene
36 /furanone 37 systems via BF3.OEt2 catalyzed tandem reaction of -diazo-esters 33 /-
amides 27 and propargyl alcohols 35 has been demonstrated under mild conditions. This
methodology offers a great potential for the synthesis of biologically active indene 36
and furanone 37 derivatives and their related polycyclic compounds.
CO2R4
N2CO2R4
R1
O
R1
NH
R6 O
N
N2
O
R6
R3
R2
R1
OH
R2
R3R3
R2
R5
BF3.OEt2
DCM, 0 °C
BF3.OEt2
DCM, 0 °C
R5
36 (16 examples) 37 (10 examples)
C
CO2Me
OH
Rh2(OAC)4
33
33R1
= Ph, tolyl, cyclopropyl,
n-butyl, n-heptyl
R2
= H, F, Cl, Me, OMe
R3
= H, F, Cl, Me
R4
= Me,Et, Bu, allyl
propargyl
R1
= Ph, tolyl, cyclopropyl,
n-butyl, n-heptyl
R2
= H, F, Cl, Me, OMe
R3
= H, F, Cl, Me
R5
= Me,Et, Bn, allyl
R1
= Ph
R2
, R3
, R5
, = H
R4
= Me
27
35
38
Organic Letters 2014, 16, 4248-4251
An diastereoselective synthesis of indenodithiepines 40 and indenodithiocines has been
developed via tandem reaction of propargylic alcohols 35 and dithioacetals 39 in the
presence of InCl3 as a catalyst. A range of functionalized dithiepines and dithiocines,
fused to indene ring, were obtained in good to excellent yields under mild conditions.
Further indenodithiepine was smoothly oxidized to the corresponding sulfone by
refluxing with H2O2/AcOH
OH
S
S
InCl3
DCE, 80 °C
R1
R1
R1 ( )n+
SS
( )n
R1
H2O2/AcOH
reflux, 30 min
S
S
CF3
O
O
O O
40 (18 examples)35 R1
= H, F, Cl, Me
39 R2
= H, Cl, Br, Me, OMe,
CN, Br, Cl, F, NO2, napthyl
R2
n = 0,1
41
R2
Chemical Communication 2015, 51, 707-710

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Sivaguru_Resume

  • 1. CURRICULUM VITAE M. SIVAGURU Senior Research Scientist Albany Molecular Research Center Alexandria Knowledge Park, Genome Valley Turkapally, Shameerpet, Hyderabad, India E-mail: sivaguru1980@gmail.com Mobile: +919791711151 CAREER OBJECTIVES To be an active participant in Research and Development with new trends of technology on synthetic organic chemistry and medicinal chemistry, where I can contribute my best efforts to reach the apex my career. ACADEMIC RECORDS Oct. 2008-June 2014 Ph.D Synthetic Organic Chemistry with four years‟ experience in API industry Bharathidasan University, Trichirappalli, Tamil Nadu, India Thesis Title: “Studies on the reactions of diazocarbonyl compounds: Synthesis and characterization of macrodiolide, indole, indene and furanone derivatives.” Defended thesis on 7th May 2015. Jun. 2003-May 2005 M. Sc. Organic Chemistry, Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600025, Tamil Nadu, India. Project with Prof. R. Raghunathan, University of Madras, Chennai, Project Title: “Synthesis of novel Spiroheterocycle through 1,3-dipolar cycloaddition”. Jul. 1999-May 2002 B. Sc. Chemistry, Tagore Arts and Science College, Pondicherry University, India. INDUSTRIAL EXPERIENCES Jun 2016 to till date working as Senior Research Scientist (Scale up process R & D) in Albany molecular research center, Hyderabad.
  • 2. Jan 2016 to May 2016 Worked as chemistry subject matter expert in SPi Technologies, Chennai Nov. 2014 to Sep 2015 Worked as Research Scientist in Sun Pharmaceuticals Ltd, Formerly known as Ranbaxy Laboratories, Guragon, Haryana, India. Dec. 2006 to Mar. 2008 Worked as a research associate in Cadila Pharmaceuticals, Bangalore, Karnataka, India. Jul. 2005 to Nov. 2006 Worked as research executive Cipla Pharmaceuticals, Bangalore, Karnataka, India. AWARDS/FELLOWSHIPS  Awarded Research Fellowship (SRF) by Council for Scientific and Industrial Research, India (2008-11).  Awarded Research Fellowship (JRF) by University Grants Commission- Research Fellow Scheme Meritorious Students, India (2013-14).  Summer training in chemistry for the pre-final post-graduate Students, during June-July 2004, Malladi drugs and pharmaceuticals, Eakatuthangal, Chennai- 603102, Tamil Nadu, India.  Got 2th rank in M. Sc. Organic Chemistry entrance examination in Madras University (A state wise entrance examination).  Got 3rd rank in B. Sc. Chemistry examination. RESEARCH PUBLICATIONS 1. Indium(III) chloride catalyzed highly diastereoselective domino synthesis of indenodithiepines and indenodithiocines, S. Muthusamy, M. Sivaguru, Chem. Commu. 2015, 51, 707-710. 2. Atom-economical access to highly substituted indenes and Furan-2-ones via tandem reaction of diazo compounds and propargyl alcohols, S. Muthusamy, M. Sivaguru Organic Lett. 2014, 16, 4248-4251. 3. Synthesis of conformationally restricted symmetric macrodiolides via carbonyl ylides, S. Muthusamy, M. Sivaguru, Synthesis, 2013, 45, 2034-2042. 4. Synthesis of conformationally restricted C2 symmetric macrodiolides via head to tail dimerization of carbonyl ylides, S. Muthusamy, M. Sivaguru, Tetrahedron Lett., 2013, 54, 6810-6813. 5. Synthesis of novel spiropyrrolidines through (3+2) cyclo addition reactions with Baylis-Hillman adducts as dipolarophiles, J. Jayashankaran, R.S. Rathna Durga. , M. Sivaguru, R. Ragunathan, Tetrahedron Lett., 2006, 47, 5535-5538.
  • 3. 6. Synthesis of conformationally restricted macrocyclic bis-cyclopropanes in the presence of copper catalyst, S. Muthusamy, M. Sivaguru (unpublished result) 7. Efficient approach to arylhydrazones, the precursor for 2,3-substituted indole synthesis, via diazoamide, S. Muthusamy, M. Sivaguru (unpublished result). CONFERENCE PAPERS/POSTERS 1. Poster presentation- Seminar on “Current Trends in Organic Synthesis” on June 19, 2013 held at Department of Chemistry, Madurai Kamaraj University, Madurai, India. 2. Poster presentation- 12th Chemical Research Society of India (CRSI) National Symposium in Chemistry, February 4-7, 2010, Indian Institute of Chemical Technology, Hyderabad, India- 3. Poster presentation- The mid-year meeting of the Chemical Research Society of India, December 16-17 2011, Department of Chemistry, Pondicherry University, Pondicherry, India. 4. RTOS-2011 volunteer- National conference on recent trends in organic synthesis, February 24-26, 2011 held at Bharathidasan University, Tiruchirappalli, Tamil Nadu, India. 5. National Symposium on “Recent Development in Chemistry” 29th August, 2011, School Of Chemistry, Bharathidasan University, Trichirappalli, Tamil Nadu, India. 6. National Workshop on „Scholarly Information Access‟ on 23-24 October, 2009, Bharathidasan University, Trichirappalli, Tamil Nadu, India. TECHNICAL SKILLS  Experience in handling Bruker 400 MHz NMR spectrometers and familiar with two-dimensional NMR spectroscopy techniques.  Experience with HPLC (Agilent)  FT-IR (Bruker Alpha) and Digital Polarimeter (JASCO).  Hands-on experience in handling of X-ray package Mercury.  Expertise in the preparation and purification of organic molecules in mg to gram scales. TEACHING EXPERIENCE Experience in conducting under-graduate level and graduate level laboratory work in synthetic organic chemistry. Experience in guiding junior researchers, PhD students, M. Phil. and project students.
  • 4. API PROJECTS WORKED Chemistry subject matter expert I am working as a team leader for a group of 5 members and we are working for the generation of chemistry research database. My job is to validate the data done by my group members. Tenofovir Alefanamide Hemi-Fumarate (anti-retroviral) I have worked on the process development of tenofovir alefanamide hemi-fumarate. In this process we have developed a catalyst/ligand free approach which will selectively give 90 % pure diastereomeric isomer and <10 % of undesired isomer which further removed during crystallization. In this project we faced problem in isolating hemi- fumarate form still process are ongoing to get desired hemi-fumarate form. Anacetrapib Completed the process development of Anacetrapib (anti-cholesterol). In this project we avoided the formation desmethyl API impurity by modified process development to eliminate the impurity completely compared to innovator method. We achieved 80% overall yield which is 10% more yield compared to other competitors. Sunitinib & Valsartan I worked on the process development of Sunitinib and Valsartan during my research experience on Cadila pharmaceuticals. Our research group successfully carried out technology transfer and process development on these molecules before the time line. Donepezil Hydrochloride In this project I carried out novel route for the formation of piperidone epoxide a key intermediate for the formation of API which yielded one process patent in this molecule. Similarly worked on the process development of Gemcitabine, Ezetimibe, Temozolomide, Montelukest in Cipla pharmaceuticals. EXPERIENCE IN REACTIONS 1. Synthesis of Boronic acids and Phosphate containing molecules 2. Ring opening of cyclopropane, epoxide. 3. Catalytic Hydrogenation 4. Lewis acid and organometallic reactions 5. Diazocarbonyl compounds and allene derivatives 6. Chiral reduction and Oxidation reactions 7. Bromination, Chlorination reactions 8. LDA, n-butyl Lithium, Grignard reactions, sodium metal, sodium amide, sodium hydride etc.,
  • 5. 9. Corrosive, lachrymatory and hygroscopic products 10. Having good experience on kilo lab batches 11. Liquid Nitrogen and Dry ice reaction (-76 C) Personal Profile: Father‟s Name : Late P. Manickasamy Date of Birth : 10.09.1980 Nationality : Indian Marital Status : Married Languages Known : Tamil & English Address for communication : 7/4A, Chandra Nivas Amma Mandapam Road Srirangam, Trichirappalli-620006. Tamil Nadu, India. REFERENCES Dr. Venkataramana reddy Dr. J. Sony Senior Research Scientist-1 Senior Research Scientist Albany Molecular Research Center Ranbaxy Laboratories Alexandria Knowledge Park, Genome Valley Guragon-122015 Turkapally, Hyderabad, India Haryana, India venkataramanareddy.yemireddy@amriglobal.com josephsony@yahoo.com +919610028340 +918285003062 prof. S. Muthusamy Dr. Vinod Acharya School of Chemistry Group Leader-API R & D Bharathidasan University Cipla Ltd. Tiruchirapalli-620024 MIDC Patalganga Dist. Raigad Tamil Nadu, India Maharashtra -410220 muthu@bdu.ac.in vinodacharya@rediffmail.com +919442491933 +91880501494
  • 6. DOCTORAL RESEARCH SUMMARY In order to form C2 symmetric macrodiolide the required alkyne / alkene tethered diazocarbonyl compounds 5 were assembled in a step-wise manner. Tandem reaction of -diazocarbonyl compounds in the presence of rhodium(II) acetate catalyst was demonstrated to furnish wide range of conformationally restricted C2 symmetric macrodiolides via head to tail dimerization of carbonyl ylides. O O R2 O O O R1 Me R2 O OH O R1 Me R2 O O R1 Me O O 3 R1 , R2 = -(CH2)4-, -(CH2)3- n = 1-3 toluene reflux OH R2 O R1 Me O O O ( )n ( )n MsN3,Et3N DCM, rt 8% aqu KOH (i) [COCl]2 (ii) i-PrMgBr, THF MeO2CCH2CO2H DCM R3 R3 R2 O R1 Me O O O ( )n R3 N2 + Rh2(OAc)4 O O Me Me Me Me Me MeOO OO Me Me Me O O O Me Me Me O O O OO O O Rh2(OAc)4 R1 , R2 = CH3 n = 1-3 R1 , R2 = CH3 n = 1,3 R1 , R2 = CH3 n = Ar spacer 6 (3 examples) 6 (4 examples) 6 (2 examples) n = 1-3 O O OO OO O O Me Me ( )n ( )n ( )n ( )n O O Me Me Me Me Me MeOO OO O O ( )n ( )n 1 2 45 6 Tetrahedron letters, 2013, 54, 6810-6813 A series of bis-diazocarbonyl compounds 8 were assembled from transesterification reaction of active methylene 3 with dihydroxy compounds in dry toluene followed by diazo transfer reaction. Macrodiolides 11/12 incorporating oxa- and dioxa-fused units were synthesized from bis-diazocarbonyl compounds 8 and bis-aldehyde / bis-olefin 9/10 as precursors to utilize the bis-cycloaddition approach. Bis-olefin compounds 10 were obtained via Wittig reaction of the corresponding bis-aldehydes 9. Initially, the reaction of bis-diazocarbonyl compounds 8 with DMAD / NPM / aldehydes in the presence of rhodium(II) acetate dimer furnished bis- cycloadduct 13-15. O O O O ( )n toluene reflux Et3N, DCM HO OH ( )n O O O O O O O O ( )n O O O O O O O O N2 N2MsN3 O O OO Ph3PCH3Br n-BuLi,THF ( )m O O( )m m = 3, 4, 6 n = 2-4, 8 83 7 9 10
  • 7. Rh2(OAc)4 O O O OO O OO O O ( )n ( )m O O O O OO O O OO O O ( )n ( )m Rh2(OAc)4 (3 examples) OO OO ( )n NN OOO Ph Ph (3 examples) NPM Rh2(OAc)4 O O O OOO OO ( )n O O O O DMAD Rh2(OAc)4 MeO2C CO2Me MeO2C CO2Me O HH H H** * * (7 examples) O O O O OO ( )n O O O O H H R R * * ArCHO; Rh2(OAc)4 O O O OO O ( )n N2 N2 O O n = 2-4 m = 3, 4 n = 2, 3, 8 m = 3, 4, 6 n = 2-4 n = 2-4 n = 2-4 8 1112 13 14 15 Synthesis, 2013, 45, 2034-2042 The required bis-diazocarbonyl compounds 19/22 were also assembled via DCC coupling and transesterification reaction. Bis-diazocarbonyl compound 24 was synthesized through N- alkylation of diazoamides 23. After optimization, CuOTf was chosen for the bis- cyclopropanation reaction between bis-diazocarbonyl compounds 19 and bis-olefin derivatives 11 to furnish conformationally restricted macrodiolide 25/26. R O O R OH O + HO OH DCC O R O ( )n MsN3 Et3N DCM O O O + O O O O toluene ( )n R O O O R O ( )n N2 N2 HO OH ( )n O O ( )n MsN3 Et3N DCM O O O O O O ( )n N2 N2 reflux DCM 19 22 N N2 O H 24 Br Br N N O O N2N2 K2CO3/DMF n = 2-4, 6 n = 3, 6 R = CO2Me, CO2Et, Ph 16 17 18 20 17 21 23 26 (9 examples) O O O O O O ( )m ( )n O O 19/22 CuOTf Toluene R R ( )m NN O O OO 25 (2 examples) 24 CuOTf Toluene m =3-6, 8 n =2-4, 6 R = CO2Me, CO2Et, COMe,Ph ( )m + + 11 Unpublished results
  • 8. Reaction of diazoamide 27 was treated with 1 equiv of Grignard reagents to give hydrazone incorporating oxindole 28 in excellent yield. Similar reaction was performed with diazoester 33 and cyclohexanone diazo compounds 31 to furnish 34/32. Thus, the diazoamide 27 was treated with 2.5 equiv. Grignard reagents to furnish 2-phenyl-3-azoindole derivative 29 in excellent yield. Reduction of azo compounds 29 carried out using SnCl2 in AcOH to their respective amino compounds 30. N O HN R' N2 O rtOMe OMe + R'MgX THF N N O HN R' R N N2 O R excess R'MgX THF, 30 °C 1.2 eqiv. R'MgX THF, 30 °C N N R' N R' R 29 (9 examples) N NH2 Me AcOH SnCl2 30 (2 examples) (8 examples) O N N H rt + R'MgX THF O N2 27 R = H, Allyl, Me, Et, Bn 28 R' = Ph, i-pr, Cyclohexyl 31 32 33 34 Unpublished results An atom-economical facile synthesis of highly substituted as well as conjugated indene 36 /furanone 37 systems via BF3.OEt2 catalyzed tandem reaction of -diazo-esters 33 /- amides 27 and propargyl alcohols 35 has been demonstrated under mild conditions. This methodology offers a great potential for the synthesis of biologically active indene 36 and furanone 37 derivatives and their related polycyclic compounds. CO2R4 N2CO2R4 R1 O R1 NH R6 O N N2 O R6 R3 R2 R1 OH R2 R3R3 R2 R5 BF3.OEt2 DCM, 0 °C BF3.OEt2 DCM, 0 °C R5 36 (16 examples) 37 (10 examples) C CO2Me OH Rh2(OAC)4 33 33R1 = Ph, tolyl, cyclopropyl, n-butyl, n-heptyl R2 = H, F, Cl, Me, OMe R3 = H, F, Cl, Me R4 = Me,Et, Bu, allyl propargyl R1 = Ph, tolyl, cyclopropyl, n-butyl, n-heptyl R2 = H, F, Cl, Me, OMe R3 = H, F, Cl, Me R5 = Me,Et, Bn, allyl R1 = Ph R2 , R3 , R5 , = H R4 = Me 27 35 38 Organic Letters 2014, 16, 4248-4251
  • 9. An diastereoselective synthesis of indenodithiepines 40 and indenodithiocines has been developed via tandem reaction of propargylic alcohols 35 and dithioacetals 39 in the presence of InCl3 as a catalyst. A range of functionalized dithiepines and dithiocines, fused to indene ring, were obtained in good to excellent yields under mild conditions. Further indenodithiepine was smoothly oxidized to the corresponding sulfone by refluxing with H2O2/AcOH OH S S InCl3 DCE, 80 °C R1 R1 R1 ( )n+ SS ( )n R1 H2O2/AcOH reflux, 30 min S S CF3 O O O O 40 (18 examples)35 R1 = H, F, Cl, Me 39 R2 = H, Cl, Br, Me, OMe, CN, Br, Cl, F, NO2, napthyl R2 n = 0,1 41 R2 Chemical Communication 2015, 51, 707-710