2-(cyano-diphenyl-methyl)-3-[(4,4-dibenzyl-1-methyl-2,5-dioxo-pyrrolidin-3-ylidene)-(triphenyl-λ
5-phosphanylideneamino)-methylimino]-acrylic acid methyl ester 反应 14.0h,
生成
3-cyano-2-[5,5-dibenzyl-7-methyl-6-oxo-4-(triphenyl-λ5-phosphanylideneamino)-6,7-dihydro-5H-pyrrolo[3,2-e][1,3]oxazin-2-ylidene]-3,3-diphenyl-propionic acid methyl ester