Synthesis and Reactions of N-(2,4-Dichloro-6-oxo-2,4-cyclohexadien-1-ylidene)-4-nitrobenzamide with Alkenes

Article abstract of DOI:10.1021/jo00188a009

The cycloaddition reactions of N-(2,4-dichloro-6-oxo-2,4-cyclohexadien-1-ylidene)-4-nitrobenzamide (3) and other o-quinone monoimides with electron-rich alkenes to give derivatives of 2,3-dihydro-4H-1,4-benzoxazine are described.Reaction of 3 with 2,3-dim