Aadil Ali Wani presented on green chemistry principles at the Department of Chemistry at the University of Kashmir. Green chemistry aims to reduce waste and pollution by designing chemical syntheses. For example, the traditional production of allyl alcohol uses alkaline hydrolysis of allyl chloride, generating hydrochloric acid as a byproduct. A greener route avoids chlorine by using a two-step process with propylene, acetic acid, and oxygen, allowing the acetic acid produced to be recovered and reused. The presentation covered principles such as atom economy to maximize the use of starting materials and minimize waste.

1. DEPARMENT OF CHEMISTRY
UNIVERSITY OF KASHMIR
SEMINAR LECTURE ON
PRESENTER : Aadil Ali Wani
ENR. NO : 16062120001
1

2. 2

3. 3

4. •Green chemistry can also be described as
•Sustainable chemistry.
•Chemistry that is benign by
design.
•Pollution prevention at the
molecular level.
4

5. 5

6. Designing the Synthesis
6

7. DESIGNING A SYNTHESIS
• If the chemical reaction of the type
• A + B P + W WASTE
•Find alternate A or B to avoid W
7

8. Example 1 ; Production of allyl alcohol CH2=CHCH2OH
• Traditional route: Alkaline hydrolysis of allyl chloride, which generates
the product and hydrochloric acid as a by-product
Greener route, to avoid chlorine: Two-step using propylene
(CH2=CHCH3), acetic acid (CH3COOH) and oxygen (O2)
• Added benefit: The acetic acid produced in the 2nd reaction can be
recovered and used again for the 1st reaction, leaving no unwanted by-
product.
CH2=CHCH2Cl + H2O CH2=CHCH2OH + HCl
problem product
CH2=CHCH3 + CH3COOH + 1/2 O2 CH2=CHCH2OCOCH3 + H2O
CH2=CHCH2OCOCH3 + H2O CH2=CHCH2OH + CH3COOH
8

9. 9

10. 10

11. 11

12. 12

13. 13

14. 14

15. Priciple : Atom Economy
15

16. 16

17. 17

18. 18

19. 19

20. 20

21. 21

22. 22

23. 23

24. 24

25. 25

26. 26

27. 27

28. 28

29. References
http://www.epa.gov/greenchemistry/
http://www.epa.gov/greenchemistry/pubs/educat.html
http://www.epa.gov/greenchemistry/
http://www.epa.gov/greenchemistry/pubs/principles.html
http://en.wikipedia.org/wiki/Green_chemistry
http://portal.acs.org/portal/acs/corg/content?_nfpb=true&_pageLabel=PP_TRANSITIONMAIN&node_id=830&use_sec=false&sec_url_var=region1&__uuid=76247a16-94d0-458e-9092-
10de1c35f2c6
http://books.google.com/books?id=ZMjkTMwO3NkC&dq=green+chemistry&printsec=frontcover&source=bl&ots=ZdGD63CxOJ&sig=vM94PxekSEhIX3a9yFOPpDAOXGo&hl=en&ei=mD9RSqSoDq
DMjAfJg4mfBQ&sa=X&oi=book_result&ct=result&resnum=8
http://books.google.com/books?id=ZMjkTMwO3NkC&dq=green+chemistry&printsec=frontcover&source=bl&ots=ZdGD63CxOJ&sig=vM94PxekSEhIX3a9yFOPpDAOXGo&hl=en&ei=mD9RSqSoDq
DMjAfJg4mfBQ&sa=X&oi=book_result&ct=result&resnum=8
29

30. 30