An efficient and inexpensive catalyst system for the aza-Michael reactions of enones with carbamates.
A new strategy which uses very cheap FeCl3 as an effective catalyst in the presence of Me3SiCl has been developed for the conjugate addition of enones and chalcone with unactivated weakly nucleophilic carbamates.
Xu
Li-Wen
LW
State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physic, Chinese Academy of Science, Lanzhou, 730000, PR China.
Xia
Chun-Gu
CG
Hu
Xiao-Xue
XX