Formation of Polysubstituted 1,2,5,6-Tetrahydropyridines from the 4 + 2 Cycloaddition Reaction of Bis(phenylsulfonyl)butadienes with Aryl Imines

Article abstract of DOI:10.1021/jo00008a026

The reaction of 2,3-bis(phenylsulfonyl)-1,3-bitadiene with aryl imines affords N-alkyl-3,5-bis(phenylsulfonyl)-1,2,5,6-tetrahydropyridines in high yield.The formation of the rearranged cycloadducts proceeds by a mechanism that involves addition of benzene