C6H5CH3+NBS→C6H5CH2BrC6H5CH2Br+Mg—无水乙醚→C6H5CH2MgBrC6H5CH2MgBr+(CH3)2C=O—无水乙醚→C6H5CH2C(CH3)2OMgBrC6H5CH2C(CH3)2OMgBr—H+/H2O→C6H5CH2C(CH3)2OH
我会。
