1,4-dimethyl-7-oxo-5,6-diphenyl-2,3-diaza-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid diethyl ester 以
乙腈 为溶剂,
反应 96.0h,
生成 3-ethoxy-6,7a-dimethyl-7-oxo-4a,5-diphenyl-(4ar,7ac)-7,7a-dihydro-4aH-cyclopenta[1,3,4]oxadiazine-1-carboxylic acid ethyl ester