3-Carboxy-1-sulfopyridin-1-ium chloride ([CPySO<sub>3</sub>H]<sup>+</sup>Cl<sup>−</sup>): an efficient catalyst for one-pot synthesis of hexahydroquinoline-3-carboxamides
作者:Sepideh Ehsanifar、Masoud Mokhtary
DOI:10.1515/hc-2017-0211
日期:2018.2.23
Abstract 3-Carboxy-1-sulfopyridin-1-ium chloride ([CPySO3H]+Cl−) was synthesized and evaluated as a recoverable catalyst for one-potsynthesis of hexahydroquinoline-3-carboxamide derivatives by a four-component reaction of an arylaldehyde, dimedone, acetoacetanilide and ammonium acetate. The [CPySO3H]+Cl− catalyst was characterized by infrared (IR), 1H nuclear magnetic resonance (NMR), 13C NMR, elemental
Abstract Chitosan, a biodegradablegreencatalyst, was found to be an impressive system for one-pot four-component reaction of different aldehydes, dimedone, β‐ketoesters or acetoacetanilide, and ammonium acetate leading to 1,4-dihydropyridine derivatives via Hantzsch-type condensation under solvent-free condition. This methodology produces diverse superiorities such as operational simplicity, short
Water compatible silica supported iron trifluoroacetate and trichloroacetate: as prominent and recyclable Lewis acid catalysts for solvent-free green synthesis of hexahydroquinoline-3-carboxamides
作者:Dnyaneshwar Purushottam Gholap、Ramdas Huse、Sudarshan Dipake、M. K. Lande
DOI:10.1039/d3ra03542e
日期:——
at 70 °C in solvent free reaction condition with best product yield in a short reaction time. Both catalysts are reusable and simple to recover, and perform meritoriously in water as well as in a variety of organic solvents. The key advantages of the current syntheticroute are permitting of a variety of functional groups, quick reaction time, high product yield, mild reaction condition, recyclability