1-methyl-3,5-bis-(2-methyl-benzylidene)-piperidin-4-one 、
靛红 、
噻莫西酸 以
甲醇 为溶剂,
反应 1.0h,
以96%的产率得到spiro[5.3'']oxindolespiro-[6.3']-1'-methyl-5'-(2-methylphenylmethylidene)tetrahydro-4'(1H)-pyridinone-7-(2-methylphenyl)tetrahydro-1H-pyrrolo[1,2-c][1,3]thiazole