1,3‐Dipolar cycloaddition of nitrones with α,β‐unsaturated sulfones

Abstract

Abstract C,N‐Diphenyl nitrones react with substituted α,β‐unsaturated phenylsulfones yielding isoxazolidinic cycloadducts whose structure and stereochemistry were assigned on the basis of 1 H and 13 C nmr data. The ycloaddition regioselectivity is discussed in accordance with frontier orbital considerations.