5-Bromo-4-fluoro-2-hydrazinylbenzoic acid dihydrochloride 、
3-氧代环己烷甲酸乙酯 在
乙酸乙酯 作用下,
以
溶剂黄146 为溶剂,
反应 3.0h,
以to give 6-bromo-2-(ethoxycarbonyl)-5-fluoro-2,3,4,9-tetrahydro-1H-carbazole-8-carboxylic acid (1.15 g, 2.98 mmol, 47.9% yield)的产率得到6-bromo-2-(ethoxycarbonyl)-5-fluoro-2,3,4,9-tetrahydro-1H-carbazole-8-carboxylic acid