Theae acids were degraded to cis-and truns-3-phenylcyclobutylamine, respectively. The dicarboxylic acid was degraded to 3-phenylcyclobutanone, the oxime of which gave cis-3- phenylcyclobutylamine1 on reduction. This configurational assignment is based on the conversion of cis-3-phenylcyclobutanol, 8 via its tosylate ester, to trans-3-phenylcyclobutyl azide and hence to trans-3-phenylcyclobutylamine.
