Synthesis of ( E )-4-ethoxyphenyliminomethylaryls and their hydrochlorides

Condensation of p-phenetidine with the substituted aromatic benzaldehydes in methanol results in (E)-4-methylethoxyphenyliminoaryl derivatives. The latter react with gaseous hydrogen chloride in diethyl ether to form 4-ethoxymethylphenyliminoaryl hydrochlorides.