ChemInform Abstract: Atom Economy - A Challenge for Organic Synthesis: Homogeneous Catalysis Leads the Way

ChemInform ◽  
2010 ◽  
Vol 26 (26) ◽  
pp. no-no
Author(s):  
B. M. TROST
Keyword(s):  
Organic Synthesis ◽  
Homogeneous Catalysis ◽  
Atom Economy ◽  
The Way

Phosphorus Containing Porous Organic Polymers: Synthetic Techniques and Applications in Organic Synthesis and Catalysis

2021 ◽  
Author(s):  
Pramod Kumar ◽  
Animesh Das ◽  
Biplab Maji
Keyword(s):  
Organic Synthesis ◽  
Homogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Organic Polymer ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Porous Organic Polymer ◽  
Phosphorus Containing

The phosphorous-containing porous organic polymer is a trending material for the synthesis of heterogeneous catalysts. Decades of investigations have established phosphines as versatile ligands in homogeneous catalysis. Recently, phosphine-based heterogeneous...

scholarly journals Photocatalytic three-component asymmetric sulfonylation via direct C(sp3)-H functionalization

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shi Cao ◽  
Wei Hong ◽  
Ziqi Ye ◽  
Lei Gong
Keyword(s):  
Asymmetric Catalysis ◽  
Organic Synthesis ◽  
Photochemical Reaction ◽  
Low Cost ◽  
Bioactive Molecules ◽  
Atom Economy ◽  
Mild Conditions ◽  
Wide Range ◽  
Unsaturated Carbonyl Compound ◽  
Direct Functionalization

AbstractThe direct and selective C(sp3)-H functionalization of cycloalkanes and alkanes is a highly useful process in organic synthesis owing to the low-cost starting materials, the high step and atom economy. Its application to asymmetric catalysis, however, has been scarcely explored. Herein, we disclose our effort toward this goal by incorporation of dual asymmetric photocatalysis by a chiral nickel catalyst and a commercially available organophotocatalyst with a radical relay strategy through sulfur dioxide insertion. Such design leads to the development of three-component asymmetric sulfonylation involving direct functionalization of cycloalkanes, alkanes, toluene derivatives or ethers. The photochemical reaction of a C(sp3)-H precursor, a SO2 surrogate and a common α,β-unsaturated carbonyl compound proceeds smoothly under mild conditions, delivering a wide range of biologically interesting α-C chiral sulfones with high regio- and enantioselectivity (>50 examples, up to >50:1 rr and 95% ee). This method is applicable to late-stage functionalization of bioactive molecules, and provides an appealing access to enantioenriched compounds starting from the abundant hydrocarbon compounds.

Homogeneous catalysis as a tool for organic synthesis

1998 ◽  
Vol 70 (5) ◽  
pp. 1041-1046 ◽  
Author(s):  
W. A. Nugent ◽  
G. Licini ◽  
Marcella Bonchio ◽  
Olga Bortolini ◽  
M. G. Finn ◽  
...  
Keyword(s):  
Organic Synthesis ◽  
Homogeneous Catalysis

scholarly journals Aldehydes as powerful initiators for photochemical transformations

2020 ◽  
Vol 16 ◽  
pp. 833-857 ◽  
Author(s):  
Maria A Theodoropoulou ◽  
Nikolaos F Nikitas ◽  
Christoforos G Kokotos
Keyword(s):  
Transition Metal ◽  
Organic Synthesis ◽  
Organic Molecules ◽  
Photophysical Properties ◽  
Organic Transformations ◽  
Aliphatic Aldehydes ◽  
Small Organic Molecules ◽  
Photochemical Transformations ◽  
The Way

Photochemistry, the use of light to promote organic transformations, has been known for more than a century but only recently has revolutionized the way modern chemists are thinking. Except from transition metal-based complexes, small organic molecules have been introduced as catalysts or initiators. In this review, we summarize the potential that (aromatic or aliphatic) aldehydes have as photoinitiators. The photophysical properties and photoreactivity of benzaldehyde are initially provided, followed by applications of aldehydes as initiators for polymerization reactions. Finally, the applications to date regarding aldehydes as photoinitiators in organic synthesis are presented.

scholarly journals Substituent Effects on Solvent-Free Synthesis (MWAOS) of Dihydroquinazolinones by the Addition of Isatoic Anhydride to a Series of Phenyl-Substituted N-(Phenylmethylidene) Anilines

2013 ◽  
Vol 2013 ◽  
pp. 1-4
Author(s):  
Abhilash Mullasseril
Keyword(s):  
Organic Synthesis ◽  
Substituent Effects ◽  
Microwave Oven ◽  
Solvent Free ◽  
Isatoic Anhydride ◽  
Atom Economy ◽  
Microwave Assisted ◽  
Solvent Free Synthesis

The present study concentrates on the synthesis of a series of dihydroquinazolinones by applying the green concept Microwave Assisted Organic Synthesis (MWAOS) with high atom economy. A series of phenyl-substituted N-(phenylmethylidene) anilines are coupled with isatoic anhydride using a microwave oven.

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