Ppt about green chemistry , sustainable chemistry , sustainable development , reactions in sustainable development, organic synthesis via green chemistry and sustainable development.

1. GREEN CHEMISTRY
in SUSTAINABLE
DEVELOPMENT
BY– RAJAT CHAUHAN
https://www.facebook.com/RaZaT.
ChauHaNX

2. Green chemistry is a vital catalyst for sustainable
development, offering innovative solutions that
minimize pollution, conserve resources, enhance
safety, and promote renewable feedstocks. By
prioritizing eco-friendly products and processes, it
drives innovation, fosters resource efficiency, and
supports the transition to a greener, more resilient
economy.
This approach integrates principles from chemistry,
environmental science, and engineering to create
more eco-friendly solutions across various industries,
from pharmaceuticals to agriculture.
INTRODUCTION

3. Sustainable chemistry refers to the practice of designing and
conducting chemical processes and producing chemical products in a
way that conserves resources, and promotes sustainability by
developing safer, more efficient, and less wasteful chemical processes
and products at low cutting cost.
SUSTAINABLE CHEMISTRY AND
DEVELOPMENT
Why do we need Green chemistry in
Sustainable development ?

4. BENEFITS OF GREEN
CHEMISTRY
• Reduction of hazardous substances: Green chemistry minimizes or eliminates the use of toxic
chemicals, reducing harm to the environment and human health.
• Resource conservation: It optimizes the use of raw materials, energy, and water, reducing waste
generation and promoting efficiency throughout the product lifecycle.
• Energy efficiency: Green chemistry techniques prioritize processes that require less energy, such as
using renewable energy sources and employing catalysts to lower reaction temperatures.
• Improved safety: By designing safer chemicals and processes, green chemistry reduces the risk of
accidents, exposure to harmful substances, and adverse health effects for workers and communities.
• Promotion of renewable feedstock: Green chemistry encourages the use of renewable
resources, like biomass and agricultural waste, as alternatives to fossil fuels and petrochemicals, mitigating
environmental impact and supporting sustainable resource management.

5. Ten Objectives of Green and Sustainable
Chemistry According to the UN-PROGRAM
• Minimizing Chemical Hazards: Design of chemicals with minimized (or no) hazard
properties for use in materials, products and production processes (“benign by design”).
• Avoiding regrettable substitutions and alternatives: Develop safe and sustainable
alternatives for chemicals of concern through material and product innovations that do not
create negative trade-offs.
• Sustainable sourcing of resources and feedstocks: Use of sustainably sourced
resources, materials and feedstocks without creating negative trade-offs.
• Advancing Sustainability of Production Processes: Use green and sustainable
chemistry innovation to improve resource efficiency, pollution prevention, and waste
minimization in industrial processes.

6. • Advancing Sustainability of Products: Use green and sustainable chemistry innovation
to create sustainable products and consumption with minimized (or no) chemical hazard
potential.
• Minimize chemical release and pollution: Reduce chemical releases throughout the life
cycle of chemicals and products.
• Enabling non-toxic circularity and minimizing waste: Use of chemistry innovations
to enable non-toxic circular material flows and sustainable supply and value chains throughout
the life cycle.
• Maximizing Social Benefits: Consider social factors, high standards of ethics, education
and justice in chemistry innovation.
• Protecting workers, consumers, and vulnerable populations: Safeguard the health
of workers, consumers and vulnerable groups in formal and informal sectors.
• Developing solutions for sustainability challenges: Focus chemistry innovation to help
address societal and sustainability challenges.

7. Thus , it’s beneficiary and important to integrate Green chemistry and Sustainability, can be
done by incorporating Principle of green chemistry in Sustainable development at :
Level – 1 (Physical Level)
• Using greener and safer macromaterials and energy sources in daily life activities
and adopting to environmental friendly usable products and energy sources.
Such as –
• Replacing polythene with biodegradable packaging material.
• Using renewable greener energy sources instead of fossil fuels.
• Shifting towards safer alternatives of daily use materials that are less to no toxic.
Level – 2 (Chemical Level)
• Developing and Replacing safer and green chemicals from traditional ones, be it in a
laboratory or in large scale pharmaceutical industries.
• Using eco-friendly routes in chemical synthesis.

8. SUSTAINABILITY AT PHYSICAL LEVEL
Starting from our shoes –
Most of today’s are non-
biodegradable polymer based , Nylon
being most common.
Replacement to which is rubber or
fiber based shoes.
Bamboo fiber can be used in shoe
industries, polymer of which is air
vented (porus) making an advantage
of comfortability over transitional
shoes.
Cutting cost and less degradation
time, thus a better replacement to
buy on.

9. In 2003, a study revealed that the industrial
estimate for chemicals and fossil fuels required to
manufacture a computer chip was 630 times the
weight of the chip, compared to a 2:1 ratio for
automobiles.
LANL scientists developed a process using
supercritical carbon dioxide to significantly reduce
chemical and energy usage in chip preparation.
Richard Wool's work at ACRES utilized chicken
feathers to create a feather-based printed circuit
board, leveraging keratin protein to make a
lightweight and durable material. This innovation,
still in development for commercial use, has also
inspired applications in biofuel production.
COMPUTER CHIPS

10. The low-down on feathers. A micrograph of feathers (above) shows hollow
keratin fibers, a light, tough material.
These fibers are combined with a soy-based epoxy to make printed circuit
boards (right) that are not only recyclable but also faster than conventional
boards.

11. BIODEGRADABLE
PLASTICS
NatureWorks manufactures food containers from
polylactic acid (PLA), known as Ingeo. They've
innovated a process where microorganisms convert
cornstarch into a resin, matching the strength of
traditional petroleum-based plastics. They're also
moving towards sourcing raw materials from
agricultural waste.
BASF created Ecoflex®, a compostable polyester
film, used for fully biodegradable bags alongside
cassava starch and calcium carbonate. These bags,
certified by the Biodegradable Products Institute,
decompose into water, CO2, and biomass in
industrial composting systems.

12. PAINT
Oil-based alkyd paints emit significant amounts of volatile organic compounds (VOCs), which
have various environmental impacts as they evaporate during drying and curing.
Chempol® MPS paint formulations utilize a polymer mixture of soya oil and sugar, reducing
hazardous volatiles by 50% compared to fossil-fuel-derived paint resins and solvents. This
innovation replaces petroleum-based solvents with biobased oils, resulting in safer paint usage
and decreased toxic waste.
Sherwin-Williams has developed water-based
acrylic alkyd paints with low VOCs, made from
recycled PET plastic, acrylics, and soybean oil.
These paints combine the performance
advantages of alkyds with the reduced VOC
content of acrylics, offering an
environmentally friendly alternative to
traditional oil-based paints.

13. ETHANOL BLENDED PETROL

14. • Researchers have noted synergistic octane boosting effects when blending
ethanol with gasoline surrogates.
• This study investigates the chemical mechanisms behind this nonlinear
behavior by calculating ignition delay times for various blends of iso-octane,
n-heptane, and ethanol.
• Temperature and pressure conditions were determined experimentally and
used to analyze heat release and reactivity in premixed reactors.
• Ethanol showed superior radical scavenging compared to iso-octane.
Computational analysis highlighted the role of H-abstraction reactions,
where ethanol’s lower activation energies favored its pathway over iso-
octane.
• This understanding can aid in fuel design towards sustainability and
Environmental conservation.

15. SUSTAINABILITY AT CHEMICAL LEVEL
3 Easy ways towards Green chemistry and Sustainability in
Laboratory :
• Run experiments on the micro scale to reduce waste.
• Switch to green solvents: Use 2-methyl tetrahydrofuran in
place of methylene chloride, and use cyclopentylmethyl ether in
place of tetrahydrofuran, 1, 4-dioxane and ether.
• Neutralize basic phosphate-buffered HPLC waste or acidic HCl
waste to pH 7 and pour down the drain.

16. SOLVENT SELECTION

17. RELATIVE-GREEN REAGENTS/SYNTHESIS
REAGENTS
1. HEH
2. PMHS/Fe3(CO)12
3. PMHS/Ti(O/Pr)4
4. Red-Al
5. DIBAL-H
6. LiAlH4
7. TMDS/ZnOTf
AMIDE REDUCTION -

18. GREENER REAGENTS
1. BH3
2. MBH4 /AcOH
3. (EtO)2 MeSiH/ZnOAc
AMIDE REDUCTION

19. Pyridine synthesis
Route of Synthesis
1. Hantzsch-type
pyridine synthesis

20. Greener route of Pyridine
Synthesis
1. Pyridines from Biorenewables
2. Metal catalysed Synthesis of
pyridine ring

21. Fluorination
Reagents
1. Pyfluor
2. Ishikawa reagent
3. DAST
4. Phenofluor
5. NFSI
6. Accufluor
7. nBu4NF
8. N-FluoroPyridinium
9. HF
10.Selectfluor
11.CpFluor
12.Deoxofluor (BAST)
13.Fluolead
14.Xtalfluor reagents

22. Fluorination

23. GREENER REAGENTS
1. C5HN HF
2. Et3N HF
3. KHF2
4. KF
5. F2
6. Pd-catalyzed methods

24. Ester Deprotection
Reagents
1. TMS-1
2. Tin
3. Thiols
4. Cyanide
5. B/Al
6. Met-allyl
7. Alkoxide
8. Met/Hal-salts

25. Ester Deprotection

26. GREENER REAGENTS
1. Water
2. Hydrogenolysis(H2)
3. Base
4. Acid
5. Biocatalysis
Ester Deprotection

27. Ester Deprotection

28. Apart from the green routes, Catalysts play a crucial role in maintaining green and sustainable
chemistry by promoting more efficient chemical reactions with less waste and energy
consumption.
They enable processes like renewable energy production, waste minimization, and safer chemical
manufacturing. Additionally, catalysts can facilitate the use of eco-friendly raw materials and
reduce the need for harmful chemicals, thus contributing to a more sustainable chemical industry
overall.
Currently, Grubbs Catalyst are the popular one among Chemical or Pharmaceutical Industries due
to their sustainability and comparative greener approach :
Grubbs Catalyst
• A series of transition metal (ruthenium) carbene complexes used as catalysts for olefin metathesis.
• Named after Robert H. Grubbs.
Hovedya-Grubbs Catalyst
• The Hoveyda-Grubbs catalyst is a type of ruthenium-based catalyst used in olefin metathesis
reactions.
• Developed by chemists Amir Hoveyda and Robert H. Grubbs.

29. Ring-closing metathesis reactions
Ring-closing metathesis is a go-to reaction for scientists making
medium to large rings. It’s also handy for creating rings that are
tough to form due to strain or crowding from nearby atoms. Catalyst
preference for these reactions will be :
Catalysts for Mid-sized ring-closing metathesis :

30. Grubbs catalyst M204

31. Ring-closing metathesis to form an oxepane ring
embedded in (-)-gambieric acid with applications
in the pharmaceutical industry.

32. Ring-closing metathesis to yield the synthesis of
an 8-membered ring structure of serpendione.

33. Ring-closing metathesis in the synthesis of
(-)-stemoamide, a root extract used in Chinese and
Japanese folk medicine.

34. Catalysts preference for Macrocyclic and Sterically
demanding ring-closing metathesis :

35. Hoveyda-Grubbs catalyst M720

36. Ring-closing metathesis to form a 20-membered
macrocycle used as a protease inhibitor in the
pharmaceutical industry.

37. Formation of a key intermediate in the preparation of
the cytotoxic marine natural product (-)-spongidepsin.

38. Hoveyda-Grubbs catalyst M721

39. Formation of a trisubstituted alkene scaffold used
for SAR exploration.

40. Cross metathesis reactions
Bringing together two unconnected alkenes in an intermolecular
reaction to synthesise complex and carbon-carbon chains. Catalyst
preference for these reactions will be :
Catalysts for Cross metathesis of electron-deficient alkenes:

41. Grubbs catalyst M202

42. Biscarboxylic acid formation used as precursors to
multiple fine chemical products.

43. Synthesis of B-lactone structures bearing a variety
of alkyl chains at the 3-position.

44. Catalysts preference for Synthesis of Trisubstituted
linear alkenes :

45. The preparation of vitamin E intermediates by cross
metathesis of Trisubstituted and Disubstituted
alkenes.

46. Thank you
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