trifluoroacetic acid; cobalt(II) dibromide; zinc dibromide in acetonitrile the mixt. in CH3CN was stirred at room temp., then arylbromide was added, stirred at room temp.; GC analysis;

trifluoroacetic acid; cobalt(II) dibromide; zinc dibromide; zinc in 1.4-dicyano 1-butene; acetonitrile Conversion of starting material;

1: 2-cyanophenyl bromide With n-butyllithium in tetrahydrofuran; hexane T=-100 - -78°C; 0.55 h; Inert atmosphere; 2: zinc dibromide in tetrahydrofuran; hexane T=-100 - -78°C; 1 h; Inert atmosphere;

in tetrahydrofuran other Radiation; microwave-accelerated preparation of arylzinc bromide by Rieke zinc insertion into aryl bromide under sealed vessel conditions for 10 min; THF 180°C; HPLC or MS;

bis-triphenylphosphine-palladium(II) chloride in tetrahydrofuran T=160°C; Negishi reaction; 0.0166667 h; microwave irradiation;