1-Alkoxycarbonyl-4-hydroxyindoles were prepared in ca. 25% yields from 5-(alkoxycarbonylamino)isoquinoline 2-oxides by irradiation in an aprotic solvent, followed by an acid treatment under solvolytic conditions. 1-Benzyloxycarbonyl-4-hydroxyindole was then converted to the title compound by catalytic hydrogenation.
通过在无相溶剂中进行辐照,然后在溶解条件下进行酸处理,从 5-(烷氧基羰基
氨基)
异喹啉 2-氧化物制备出 1-烷氧基羰基-
4-羟基吲哚,收率约为 25%。然后通过催化加氢将 1-苄氧羰基-
4-羟基吲哚转化为标题化合物。