Regioselective cycloaddition of C,N-diarylnitrones to arylallenes and of N-aryl-C-carbamoylnitrones to methyl buta-2,3-dienoate

摘要

Cycloadditions of C,N-diarylnitrones to non-activated arylallenes and of N-aryl-C-carbamoylnitrones to methyl buta-2,3-dienoate regioselectively afforded mixtures of diastereoisomeric substituted 4-methylideneisoxazolidines.