反应条件
in tetrahydrofuran (N2); addn. of 1.1 equiv. of butyllithium in hexanes to THF soln. of bromoarene deriv. at -78°C, stirring for 60-120 min at -78°C,addn. of 1.1 equiv. of borate deriv., warming to room temp. overnight; addn. of 2 M aq. HCl, extn (CH2Cl2), recrystn.;