<i>N</i>-Propargylation of secondary amines directly using calcium carbide as an acetylene source
作者:Rugang Fu、Zheng Li
DOI:10.3184/174751917x14949427622099
日期:2017.6
A one-pot N-propargylation of secondary amines has been achieved by heating the amine with formaldehyde and calcium carbide in DMSO in the presence of CuCl as a catalyst. Fifteen examples of propargylic tertiaryamines, 12 of which are novel, were efficiently prepared in yields of 65–84%. The advantages of the method are broad substrate scope and a simple work-up procedure.