1,3-dibenzyl-2-N-phenylthiocarbamoylimidazolinium inner salt 、
methyl 5-phenylpenta-2,3-dienoate 以
苯 为溶剂,
反应 24.0h,
以75%的产率得到(2'Z,5'E)-methyl 1,3-dibenzyl-4',5'-dihydro-5'-(2-phenylethylidene)-2'-(phenylimino)spiro[imidazolidine-2,3'(2'H)-thiophene]-4'-carboxylate