CuBr for KA2 reaction: en route to propargylic amines bearing a quaternary carbon center
作者:Xinjun Tang、Jinqiang Kuang、Shengming Ma
DOI:10.1039/c3cc45301d
日期:——
A highly efficient CuBr-catalyzed coupling of ketones, amines and alkynes (KA2) forming propargylic amines bearing a quaternary carbon center with the broadest scope so far has been developed.
The KA2 coupling reaction under green, solventless, heterogeneous catalysis
作者:Giovanna Bosica、Roderick Abdilla
DOI:10.1016/j.molcata.2016.09.028
日期:2017.1
Amberlyst A-21 supported Cul was found to be highly efficient novel heterogeneous catalyst for the three-component reaction between ketones, amines and alkynes, commonly called KA(2)-coupling. This inexpensive, easy-to-prepare, simple and recyclable catalyst has been employed in solventless conditions in the KA(2) coupling reaction involving both primary and secondary amines, ketones and various alkynes. The secondary and tertiary propargylamine products were obtained in good to excellent results in moderate reaction times. (C) 2016 Elsevier B.V. All rights reserved.