2-(2,6-dibromophenyl)-7-{[2-fluoro-6-(trifluoromethyl)phenyl]ethynyl}-4,4-dimethyl-1,4-dihydrochromeno[3,4-d]imidazole   、                                                                                      
copper(l) cyanide                                                                                                                                                                                                                                                                      反应 14.0h,
                                                                                                                以23%的产率得到2-(7-((2-fluoro-6-(trifluoromethyl)phenyl)ethynyl)-4,4-dimethyl-1,4-dihydrochromeno[3,4-d]imidazol-2-yl)isophthalonitrile