Copper(I)-Catalyzed One-Pot Synthesis of Highly Functionalized Pyrrolidines from Sulfonyl Azides, Alkynes, and Dimethyl 2-(Phenylamino)maleate
作者:Devenderan Ramanathan、Kasi Pitchumani
DOI:10.1002/ejoc.201403285
日期:2015.1
An efficient one-pot synthesis of highly functionalized pyrrolidines by using sulfonylazides, alkynes, and dimethyl 2-(phenylamino)maleate catalyzed by copper(I)–Y zeolite under mild reaction conditions was investigated. This cascade process involves an azide–alkyne [3+2] cycloaddition/ring rearrangement/ketenimine formation/intermolecular nucleophilic addition cascade and consequent intramolecular
Synthesis of aza-Henry products and enamines in water by Michael addition of amines or thiols to activated unsaturated compounds
作者:Azim Ziyaei-Halimehjani、Mohammad R. Saidi
DOI:10.1016/j.tetlet.2007.12.042
日期:2008.2
Nitroamines and nitrothiols were synthesized in high yields by the Michael addition of amines and thiols to nitroolefins without using any catalyst. Also, the reaction of amines with dimethylacetylene dicarboxylate (DMAD) in water afforded the corresponding enamines.
amine group in polyaryl-substituted imidazole structures with phenyl isocyanate or dimethyl acetylenedicarboxylate gave two new series of polyaryl-substituted imidazoles: biaryl ureas or vinyl esters, respectively. Besides their spectroscopic analysis, we explored the optical and electrochemical properties of these highly conjugated scaffolds. Comparing these properties in two categories of products yielded