sodium hydride in tetrahydrofuran; mineral oil T=0 - 20°C; 3 h;

bis(1,5-cyclooctadiene)-rhodium(I) tetrafluoroborate; 2,2'-bis-(diphenylphosphino)-1,1'- binaphthyl in dichloromethane T=20°C; 16 h; chemoselective reaction;