1-Phenylcyclopentanecarboxylic acid mixed carboxylic-carbonic anhydride

Phenylcyclopentanecarboxylic acid, with ethyl chlorocar-bonate to give mixed carboxylic-carbonic anhydride, 51, 48... [Pg.63]

Phenylcyclopentylamine has also been prepared from 1-phenylcyclopentanecarboxylic acid by means of the Hofmann degradation of the intermediate amide4 6 and from the intermediate carboxylic acid chloride by the Curtius reaction.6 In the method described, using the mixed carboxylic-carbonic anhydride,7 improved yields of the amine are obtained. [Pg.110]