4,4'-di-tert-butylbiphenyl; lithium in tetrahydrofuran T=-90 - 0°C;

magnesium

in tetrahydrofuran 27 h; electrolysis: aluminium anode, stainless steel cathode, NBu4Br as supporting electrolyte, i = 0.1 A, j = 0.4 A dm-2, 7.2 F mol-1;

in tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide electrochemical reaction;

1: 92 percent / tetrahydrofuran; hexamethylphosphoric acid triamide / electrochemical reaction 2: 83 percent / tetrahydrofuran; hexamethylphosphoric acid triamide / electrochemical reaction 3: 52 percent / tetrahydrofuran; hexamethylphosphoric acid triamide / electrochemical reaction View Scheme

1: 83 percent / tetrahydrofuran; hexamethylphosphoric acid triamide / electrochemical reaction 2: 52 percent / tetrahydrofuran; hexamethylphosphoric acid triamide / electrochemical reaction View Scheme

in benzene 0.5 h; Irradiation; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

in benzene 0.5 h; Irradiation; Yield given. Yields of byproduct given. Title compound not separated from byproducts;