1: 1,2,3,4-tetrapropyl-1,4-diiodo-1,3-diene With tert.-butyl lithium in diethyl ether; pentane T=-78°C; 1 h; Inert atmosphere; 2: With N,N,N',N',N'',N''-hexamethylphosphoric triamide in diethyl ether; pentane T=20°C; 0.5 h; Inert atmosphere; 3: benzonitrile in diethyl ether; pentane T=20°C; 3 h; Inert atmosphere;

1: 1,2,3,4-tetrapropyl-1,4-diiodo-1,3-diene With tert.-butyl lithium in diethyl ether; pentane T=-78°C; 1 h; Inert atmosphere; 2: With N,N,N',N',N'',N''-hexamethylphosphoric triamide in diethyl ether; pentane T=20°C; 0.5 h; Inert atmosphere; 3: benzonitrile in diethyl ether; pentane T=20°C; 3 h; Inert atmosphere;