2,2,3,3-tetracyano-7,7-dimethyl-1,4,5,6-tetraphenyl-7-germabicyclo[2.2.1]hept-5-ene

bicyclo[4.2.1]nona-2,4-diene-7,7,8,8-tetracarbonitrile

溴

氢氰酸

3-(2,2-Di-p-tolyl-vinyl)-cyclobutane-1,1,2,2-tetracarbonitrile