1: 1-methylcyclopropane-1-carboxylic acid With oxalyl dichloride in diethyl ether T=0 - 20°C; 11 h; Inert atmosphere; 2: O,N-dimethyl-hydroxylamine hydrochloride With pyridine in diethyl ether; chloroform T=0 - 20°C; 23 h; Inert atmosphere;