A continuous Michael and aldol coupling of α,β-enones catalyzed by iridium complexes
摘要:
Ir[(COD)(PPh3)(2)]OTf activated by H-2 molecule catalyzes Michael-type coupling of alpha,beta-enones with enoxysilanes to give 1,5-dicarbonyl compounds after the subsequent protodesilylation. An identical catalyst system makes it possible to attain a continuous Michael and aldol modification toward alpha,beta-enones in a one-pot operation. (C) 2000 Elsevier Science Ltd. All rights reserved.
Surface-mediated solid phase reaction. Mukaiyama-Michael addition of silyl enol ethers to methyl vinyl ketone on the surface of alumina
作者:Brindaban C. Ranu、Manika Saha、Sanjay Bhar
DOI:10.1016/s0040-4039(00)91983-x
日期:1993.3
Clean and efficient Michael addition of silyl enol ethers to methyl vinyl ketone has been achieved through a simple solvent-free reaction on the surfac