焦碳酸二乙酯 、 3-amino-6-trifluoromethyl-indazole-1-carboxylic acid ethyl ester 以
乙醇 为溶剂,
反应 2.0h,
以Analogously to Example 22, 0.04 mol of 3-amino-6-trifluoromethylindazole and 50 ml of pyrocarbonic acid diethyl ester in 25 ml of ethanol give 3-amino-6-trifluoromethylindazole-1-carboxylic acid ethyl ester (melting point: 168°-169° C; 64% of theory) in 2 hours at 80° C.的产率得到3-氨基-6-三氟甲基-1H-吲唑
参考文献:
名称:
3-Aminoindazole-1 and 2-carboxylic acid derivatives