A novel, biochemical, and eco-friendly method has been developed for the synthesis of Ag nanoparticles using an aqueous leaf extract of readily accessible Cinnamomum tamala as reducing and stabilizing agents. These Ag...A novel, biochemical, and eco-friendly method has been developed for the synthesis of Ag nanoparticles using an aqueous leaf extract of readily accessible Cinnamomum tamala as reducing and stabilizing agents. These Ag nanoparticles were used to catalyze the synthesis of pyranopyrazoles. The green nature and ease of recovery and reusability of the catalyst, together with high yields of products, make this protocol attractive and useful.展开更多
12-Aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one derivatives were synthesized by a convenient and environmentally benign procedure involving multicomponent condensation reactions of substituted aromatic aldehydes w...12-Aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one derivatives were synthesized by a convenient and environmentally benign procedure involving multicomponent condensation reactions of substituted aromatic aldehydes with 2,7-dihydroxynaphthalene/2-naphthols/2,6-dihydroxynaphthlene and cyclic 1,3-dicarbonyl compounds in task specific acidic ionic liquid[NMP]HPOat 80 ℃.This protocol has proved to be efficient in terms of good yields,operational simplicity,easy workup,recyclability of reaction medium/catalyst,and short reaction time.展开更多
A simple and efficient three component procedure has been developed for the synthesis of highly substituted spiro[indolo-3,100-indeno[1,2-b]quinolin]-2,4,11＇-triones by one pot three component condensation of enamino...A simple and efficient three component procedure has been developed for the synthesis of highly substituted spiro[indolo-3,100-indeno[1,2-b]quinolin]-2,4,11＇-triones by one pot three component condensation of enaminones, isatin and indane-1,3-dione in ethanol：water（1：1） in presence of ceric ammonium nitrate（CAN） as catalyst. This method provides several advantages such as lesser reaction time, high yield of products and operational simplicity. The antimicrobial activity of some of the compounds has been investigated against six microbial strains, some of the tested compounds showed good antimicrobial activity.展开更多
文摘A novel, biochemical, and eco-friendly method has been developed for the synthesis of Ag nanoparticles using an aqueous leaf extract of readily accessible Cinnamomum tamala as reducing and stabilizing agents. These Ag nanoparticles were used to catalyze the synthesis of pyranopyrazoles. The green nature and ease of recovery and reusability of the catalyst, together with high yields of products, make this protocol attractive and useful.
基金UGC,New Delhi,India for the grant of Junior and Senior Research FellowshipUGC,New Delhi,India for the grant of Junior Research Fellowship
文摘12-Aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one derivatives were synthesized by a convenient and environmentally benign procedure involving multicomponent condensation reactions of substituted aromatic aldehydes with 2,7-dihydroxynaphthalene/2-naphthols/2,6-dihydroxynaphthlene and cyclic 1,3-dicarbonyl compounds in task specific acidic ionic liquid[NMP]HPOat 80 ℃.This protocol has proved to be efficient in terms of good yields,operational simplicity,easy workup,recyclability of reaction medium/catalyst,and short reaction time.
文摘A simple and efficient three component procedure has been developed for the synthesis of highly substituted spiro[indolo-3,100-indeno[1,2-b]quinolin]-2,4,11＇-triones by one pot three component condensation of enaminones, isatin and indane-1,3-dione in ethanol：water（1：1） in presence of ceric ammonium nitrate（CAN） as catalyst. This method provides several advantages such as lesser reaction time, high yield of products and operational simplicity. The antimicrobial activity of some of the compounds has been investigated against six microbial strains, some of the tested compounds showed good antimicrobial activity.
