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.
An environmentally benign method was developed for the three-component, one-pot synthesis of 2-nitroamines by heating a solution of an aldehyde, an aromatic amine, and a nitroalkane in 20% water-methanol at 60 degrees C for five hours in the absence of a catalyst.