Aminomethylation of organic halides promoted by zinc in protic medium
作者:Idália H.S. Estevam、Margarete F. da Silva、Lothar W. Bieber
DOI:10.1016/j.tetlet.2005.08.139
日期:2005.10
halides undergo smooth aminomethylation by secondary amines and aqueousformaldehyde promoted by metallic zinc under copper(I) catalysis. Good to excellent yields are obtained with primary, secondary, and tertiary iodides, allylic, propargylic, and benzylic bromides and with α-bromoesters. In most cases, DMSO is the best solvent, but dioxane is preferable for some more reactive halides. Additional experiments