1-(2-bromo-acetyl)-5-methoxy-7-oxo-8-phenyl-1,3,4,7,8,8a-hexahydro-2H-quinoline-4a-carboxylic acid methyl ester 在
potassium tert-butylate 作用下,
以
苯 为溶剂,
反应 4.5h,
以99%的产率得到7-methoxy-2,9-dioxo-9a-phenyl-1,2,5,6,9a,9b-hexahydro-4H,9H-pyrrolo[3,2,1-ij]quinoline-6a-carboxylic acid methyl ester