乙酰丙酸 、
N-(4-methoxyphenyl)-4-(trifluoromethoxy)benzohydrazide hydrochloride 在
氮气 、 ice water 作用下,
以
溶剂黄146 为溶剂,
反应 4.0h,
以to give {5-methoxy-2-methyl-1-[4-(trifluoromethoxy)benzoyl]-1H-indol-3-yl}acetic acid (13) (2.3 g, 89%) as a white solid, mp 136-138° C.的产率得到{5-methoxy-2-methyl-1-[4-(trifluoromethoxy)benzoyl]-1H-indol-3-yl}acetic acid