反应条件
water; magnesium in tetrahydrofuran; diethyl ether byproducts: C4H9OH; preparation of Grignard-compound in THF, addn. of soln. to excess B(OC4H9)3 in ether at -70°C, warming to room temp., hydrolysis mit 3n HCl, extractn. with ether, removal of ether, addn. of H2O, removal of C4H9OH;;
