Valuable new synthetic intermediates, 4- or 6-chloromethyl-1H-indole-2-carboxylates, were prepared by the elimination of SO2 from 2-ethoxycarbonyl-1H-indole-4- or 6-methanesulfonic acids, respectively, which are easily accessible by Fischer-type indolization.
通过分别从2-乙氧基羰基-1 H-
吲哚-4-或6-
甲磺酸中消除SO 2来制备有价值的新型合成中间体4-或6-
氯甲基-1 H-
吲哚-2-羧酸,可通过费歇尔式的模糊化技术轻松访问。