(E)-2-(4-(4-(but-3-ynylamino)styryl)-3-cyano-5,5-dimethylfuran-2(5H)-ylidene)malononitrile 、
(E)-2-azidoethyl 4-(2-(4-cyano-5-(dicyanomethylene)-2,2-dimethyl-2,5-dihydrofuran-3-yl)vinyl)phenylcarbamate 在
(BimC
4A)3 、 copper(II) sulfate 、
sodium ascorbate 作用下,
以
甲醇 、
水 为溶剂,
反应 1.0h,
以90%的产率得到2-(4-(2-(4-((E)-2-(4-cyano-5-(dicyanomethylene)-2,2-dimethyl-2,5-dihydrofuran-3-yl)vinyl)phenylamino)ethyl)-1H-1,2,3-triazol-1-yl)ethyl 4-((E)-2-(4-cyano-5-(dicyanomethylene)-2,2-dimethyl-2,5-dihydrofuran-3-yl)vinyl)phenylcarbamate