New synthesis of 5-nitro- and 5-benzyloxytryptamine and their N-acylderivatives

By modifying the method of Abramovitch for preparation of tryptamine, a way to obtain N-acyl derivatives of tryptamine 3a-g without the necessity of isolating free tryptamine was found. The hydrolysis of the appropriate acyl derivatives gave 5-nitro- and 5-benzyloxytryptamines.