Oxidative coupling of methyl 6-hydroxyindole-2-carboxylate with primary amines. Preparation of 2-substituted methyl pyrrolo[2,3-e]benzoxazole-5-carboxylates
Oxidative coupling of methyl 6-hydroxyindole-2-carboxylate with primary amines. Preparation of 2-substituted methyl pyrrolo[2,3-e]benzoxazole-5-carboxylates