1: With [2,2']bipyridinyl; bis(1,5-cyclooctadiene)nickel (0); triethylamine in acetonitrile T=20°C; Cyclization; 2: With trimethylsilyl cyanide in acetonitrile T=20°C; Elimination;

1: With bis(1,5-cyclooctadiene)nickel (0); triethylamine in acetonitrile T=20°C; Cyclization; 2: With trimethylsilyl cyanide in acetonitrile T=20°C; Elimination; reduction;