The Cycloaddition of N,α-Diarylnitrones and Substituted p-Benzoquinones

Article abstract of DOI:10.1246/bcsj.64.2388

N,α-Diarylnitrones reacted with 2,5- or 2,6-dialkyl-p-benzoquinones at their C-C bond regioselectively to give fused isoxazolidine cycloadducts.These cycloadducts were proved to undergo retrocycloaddition. p-Benzoquinones having electron-withdrawing substituents did not give any cycloadduct.