Chiral amines catalyze the enantioselective conjugate addition of aldehydes to vinyl phosphonates in high yields and with enantioselectivities up to 97% ee. This novel process provides synthetically useful chiral gamma-geminal phosphonate aldehydes which can be easily converted in a few steps into chiral beta-substituted vinyl phosphonates with conservation of the optical purity.
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Sulzer‐Mossé et al. (2007) studied this question.
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