triethylaluminum; triphenylphosphine; bis(acetylacetonate)nickel(II) in toluene T=110°C; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

hydrogenchloride in diethyl ether byproducts: LiCl; 1 equiv of MeLi slowly adding to a soln. of the boronic ester at -78°C, stirring for 3 h at the same temp., 1 equiv of anhydrous HCl in Et2O adding, warming to room temp., stirring for 15 min; the content was detd. by (11)B NMR spectrum;

triethylaluminum; triphenylphosphine; bis(acetylacetonate)nickel(II) in toluene T=110°C; Yield given. Yields of byproduct given. Title compound not separated from byproducts;