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Development of Novel Organic Catalysts for Efficient Chemical Transformations
Subject area: Science,Engineering and Technology · Area of research: Chemistry
Abstract
As catalysts promote many useful chemical transformations, catalysis serves as one of the most foundational concepts in contemporary organic synthesis; enhanced reaction rates, improved selectivities, reduced reaction conditions, and an ability to synthesize complicated molecules needed in pharmaceuticals, fine chemical production, materials chemistry, and environmentally sustainable industry manufacturing, these benefits stem directly from catalysis- among rapidly developing new technologies in catalysis, organocatalysis, which offers the advantages of metal-free organic catalysis and uses an assortment of small organic molecules in catalysis, for example, by the utilization of hydrogen bond, covalent interaction, Lewis acid/base interaction, enamine interaction and iminium interaction between reacting molecules and the organocatalysts as activator; in recent years, a variety of organic catalysts, namely amino acid derived catalysts including proline and its derivatives, chiral phosphoric acids, NHCs, thiourea based organocatalysts, peptide based organocatalysts have shown great potential in asymmetric synthesis, carbon-carbon bond construction, oxidation-reduction catalysis and construction of complicated molecule skeletons(Dalko & Moisan, 2004); conventional chemical reactions often depend on precious and scarce metal catalysts and some of them face the problems such as potential metal poisoning of drugs and organic products, potential environmental toxicity caused by precious and difficult-to-recover metal catalysts, narrow substrate applicability and other issues that create demand for efficient, selective and environmental-friendly organocatalytic systems; accordingly, in the present work, a blueprint has been devised for the rationally designed molecular structure of organocatalysts, modification strategy, calculation-based catalyst optimization, mechanistic study and integration of the concept of green chemistry; molecular modeling and theory analysis are regarded as fundamental methods to explore the catalysts; meanwhile some environmental aspects of organic catalysis (reduction in solvent use, energy saving reaction, re-usable catalysis system, atom economy) are also discussed to guide its application in sustainable chemical processes; it is expected that this conceptual work has successfully provided design principle for efficient organocatalytic system in order to enhance reaction control ability, product selectivity and environmental sustainability of organic transformation and to extend its applications of catalytic field more broadly so that organocatalysis can play a more and more important role in the sustainable chemical reactions of future.
Keywords
Organocatalysis, Organic catalysts, Green chemistry, Asymmetric synthesis, Sustainable chemistry, Metal-free catalysis, Reaction efficiency
How to cite this paper
@article{1723026,
author = {Dr. K. S. Lamani},
title = {Development of Novel Organic Catalysts for Efficient Chemical Transformations},
journal = {Iconic Research And Engineering Journals},
year = {2018},
volume = {2},
number = {6},
pages = {411-419},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1723026.pdf},
abstract = {As catalysts promote many useful chemical transformations, catalysis serves as one of the most foundational concepts in contemporary organic synthesis; enhanced reaction rates, improved selectivities, reduced reaction conditions, and an ability to synthesize complicated molecules needed in pharmaceuticals, fine chemical production, materials chemistry, and environmentally sustainable industry manufacturing, these benefits stem directly from catalysis- among rapidly developing new technologies in catalysis, organocatalysis, which offers the advantages of metal-free organic catalysis and uses an assortment of small organic molecules in catalysis, for example, by the utilization of hydrogen bond, covalent interaction, Lewis acid/base interaction, enamine interaction and iminium interaction between reacting molecules and the organocatalysts as activator; in recent years, a variety of organic catalysts, namely amino acid derived catalysts including proline and its derivatives, chiral phosphoric acids, NHCs, thiourea based organocatalysts, peptide based organocatalysts have shown great potential in asymmetric synthesis, carbon-carbon bond construction, oxidation-reduction catalysis and construction of complicated molecule skeletons(Dalko & Moisan, 2004); conventional chemical reactions often depend on precious and scarce metal catalysts and some of them face the problems such as potential metal poisoning of drugs and organic products, potential environmental toxicity caused by precious and difficult-to-recover metal catalysts, narrow substrate applicability and other issues that create demand for efficient, selective and environmental-friendly organocatalytic systems; accordingly, in the present work, a blueprint has been devised for the rationally designed molecular structure of organocatalysts, modification strategy, calculation-based catalyst optimization, mechanistic study and integration of the concept of green chemistry; molecular modeling and theory analysis are regarded as fundamental methods to explore the catalysts; meanwhile some environmental aspects of organic catalysis (reduction in solvent use, energy saving reaction, re-usable catalysis system, atom economy) are also discussed to guide its application in sustainable chemical processes; it is expected that this conceptual work has successfully provided design principle for efficient organocatalytic system in order to enhance reaction control ability, product selectivity and environmental sustainability of organic transformation and to extend its applications of catalytic field more broadly so that organocatalysis can play a more and more important role in the sustainable chemical reactions of future.},
keywords = {Organocatalysis, Organic catalysts, Green chemistry, Asymmetric synthesis, Sustainable chemistry, Metal-free catalysis, Reaction efficiency},
month = {December},
}