1,3-dibenzyl-2-N-phenylthiocarbamoylimidazolinium inner salt 、
Methyl 5-methyl-2,3-hexadienoate 以
苯 为溶剂,
反应 24.0h,
以63%的产率得到(2'Z,5'E)-methyl 1,3-dibenzyl-5'-(iso-butylidene)-4',5'-dihydro-2'-(phenylimino)spiro[imidazolidine-2,3'(2'H)-thiophene]-4'-carboxylate