2-{3-Dicyclopropylmethylene-4-[1-(2-methyl-5-phenyl-thiophen-3-yl)-eth-(E)-ylidene]-5-oxo-dihydro-furan-2-ylidene}-malononitrile 以
甲苯 为溶剂,
生成 2-(8,8-Dicyclopropyl-4,8a-dimethyl-5-oxo-2-phenyl-8,8a-dihydro-5H-thieno[2',3':4,5]benzo[1,2-c]furan-7-ylidene)-malononitrile