THE PREPARATION OF 5-ALKYLTHIO, BRANCHED TRYPTAMINES

Abstract
The Japp–Klingemann reaction has been employed to prepare six new tryptamines. Data on the intermediate phenylhydrazones, β-carbolines, and tryptamine carboxylic acids are presented. Syntheses of 5-methyl-, 6-methyl-, 5,5-dimethyl-, and 5,6-dimethyl-2-oxopiperidine-3-carboxylates are described.