in diethyl ether byproducts: LiCl, 2-propanol; 1 equiv of PhLi 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 ether adding, warming to room temp., stirring for 15 min; product content detd. by (11)B NMR spectrum;

hydrogenchloride; tert.-butyl lithium in diethyl ether under N2; to cold (-98 °C) soln. of boron compd. in Et2O slowly added MeLi, stirred for 0.5 h, warmed to room temp., stirred for 0.5 h,Li(BMe4) detected by (11)B NMR, cooled to 0 °C, added soln. of HCl in Et2O, stirred for 15 min, warmed; not isolated, monitored by (11)B NMR;

in diethyl ether byproducts: LiCl, 2-propanol; 1 equiv of PhLi 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 ether adding, warming to room temp., decanting from the ppt. of LiCl, washing with ether, evavpg.; isolated by fractional distillation, identified by elem. anal., NMR, UVand mass spectra;

1: bromobenzene With magnesium in tetrahydrofuran 2: tri-isopropoxy-borane in tetrahydrofuran T=20°C; 16 h;

in diethyl ether under N2; dropwise addn. of Mg-compd. to soln. of B-compd. at 0°C within 30-40 min, stirred for 2h; filtered, addn. of HCl/Et2O, volatiles removed (vac.), addn. of pentane, filtered under inert atm., solvent removed (distn.), vac. distn.;

hydrogenchloride