Disclosed is a process of carrying out a Michael reaction with recovery of the catalyst, where a compound of formula (1):
is reacted with a compound of formula (2):
in the presence of a catalyst of formula (4):
where the compounds of formulae (1) and (2) undergo a Michael reaction.
Recyclable organocatalysis: highly enantioselective Michael addition of<b>1,3-diaryl-1,3-propanedione</b>to nitroolefins
作者:Bin Tan、Xuan Zhang、Pei Juan Chua、Guofu Zhong
DOI:10.1039/b813915f
日期:——
The first Michael addition of 1,3-diaryl-1,3-propanedione to nitroolefins was demonstrated using a simple organocatalyst, which afforded excellent yields (81–97%) and enantioselectivities (90 to >99% ee); the catalyst and excess reactant can be reused seven times through a simple filtration operation.