Organocatalytic enantioselective conjugate addition of 2-nitrocyclohexanone to acrylaldehyde: a concise two-step synthesis of chiral building block 1-azaspiro[4.5]decan-6-one
摘要:
A gram-scale organocatalytic enantioselective Michael addition of alpha-nitrocyclohexanone to acrolein has been developed, and it was successfully applied to a concise two-step synthesis of (1S)-azaspiro[4.5] decan-6-one, a useful chiral building block for the synthesis of a variety of natural alkaloids. (C) 2013 Elsevier Ltd. All rights reserved.