1,3-di(p-methoxybenzyl)-2-N-phenylthiocarbamoylimidazolinium inner salt 、
methyl 5-phenylpenta-2,3-dienoate 以
苯 为溶剂,
反应 2.0h,
以14%的产率得到(E)-methyl 1,3-bis(4-methoxybenzyl)-1'-phenyl-5'-(2-phenylethylidene)-2'-thioxospiro[imidazolidine-2,3'-pyrrolidine]-4'-carboxylate