Edited sentence: 2-phenylcyclopropan carboxylic acid ethyl ester is hydrolyzed by alkali to 2-phenylcyclopropancarboxylic acid and the trans-isomer is separated for further reactions.Rxn of the trans-isomer with SOCl2 gives trans-2-phenylcyclopropanecarboxylic acid chloride, which upon Rxn with NaN3 gives the respective acid azide, which undergoes Curtius rearrangement to the transcyclopropylamine.Tranylcypromine is synthesized from the ethyl ester of 2-phenylcyclopropan carboxylic acid, which is synthesized by the reaction of styrene with ethyl diazoacetate