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;

methyllithium in sulfuric acid; water

magnesium sulfate in diethyl ether T=25°C; 48 h; Inert atmosphere;

hydrogenchloride; methylmagnesium bromide in diethyl ether byproducts: (CH3)3B, Li(CH3)4B; (N2); a soln. of B-compound cooled with a dry ice-acetone bath; a soln.of CH3MgBr added dropwise via syringe; stirred for 0.5 h; allowed to warm to room temp. with stirring for 0.5 h; cooled to 0°C; a soln. of HCl in ether added; warmed to room temp.; detected by (11)B NMR;

methanesulfonic acid in tetrahydrofuran dropwise addn. of CH3Li (1 equiv.) to soln. of C6H11B(OC2(CH3)4O) (2.5 mmol) in THF at -78°C via syringe; stirring at -78°C for 3 h; addn. of CH3SO3H at -78°C; warming slowly to room temp.; stirring at room temp.;; not isolated; product distribution is determined by 11B-NMR;;

in toluene N2 atm.; to a soln. of boryl-compound in toluene was added solid Zr-complex, the soln. was refluxed for 16 h; volatiles were removed, the solid was washed with pentane, dissolved in toluene, stored at 33°C, crystd. from pentane, dried in vac.; eelem. anal.;

methanesulfonic acid in tetrahydrofuran dropwise addn. of CH3Li (1 equiv.) to soln. of C6H11B(OC2(CH3)4O) (2.5 mmol) in THF at -78°C via syringe; stirring at -78°C for 3 h; addn. of CH3SO3H at 25°C; warming slowly to room temp.; stirring at room temp.;; not isolated; product distribution is determined by 11B-NMR;;

ethyl acetate in deuterated toluene T=-80.16°C; Kinetics; SolventTemperature;

2 h;

n-butyllithium in tetrahydrofuran; hexane byproducts: BuI; boronic ester and ICH2Cl in rigorously dried THF cooled to -78°Cand stirred under Ar during dropwise addn. of 1.6 M n-BuLi in hexane, kept overnight at 20-25°C; concd. in vac., treated with petroleum ether and concd. aq. NH4Cl, org.phase dried over MgSO4, distilled bulb to bulb in vac.;