[4+2]Cycloaddition of N-Buta-1,3-dienylsuccinimide to gem-Substituted Vinyl Phosphonates

Abstract

Vinyl phosphonates α-substituted with carboxylate, nitrile, sulfone and phosphonate groups reacted with N-buta-1,3-dienylsuccinimide to give [4+2] ortho-cycloadducts as mixtures of endo/exo stereoisomers.

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