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.
