1: 1-methylguanidine hydrochloride With copper(l) iodide; caesium carbonate in N,N-dimethyl-formamide T=40°C; 0.25 h; Inert atmosphere; 2: 2-bromo-1-cyclohexene-1-carboxylic acid in N,N-dimethyl-formamide T=40°C; 2 h; Inert atmosphere;

sodium ethanolate 1.) EtOH, 1 h, 2.) EtOH, reflux, 12 h; Yield given. Multistep reaction;

sodium ethanolate

N,N-dimethyl-aniline; trichlorophosphate T=135 - 140°C; 1 h;