1: With indium(III) chloride; triethyl borane; diisobutylaluminium hydride in tetrahydrofuran T=-78°C; 2.5 h; 2: With hydrogen cation in tetrahydrofuran Further stages.;
chromium dichloride; triphenylphosphine; nickel dichloride in water; N,N-dimethyl-formamide T=25°C; 2.5 h; Title compound not separated from byproducts;
