RSITY 3.从 Grignard试剂制备: H C-o +R--MeX OMgX-H0,HC—OH R H H H 0+RMgX+R'C-OMgⅩ-HO,RC—OH R R R R R R C==0 RMgX R—C-OMgX-H0RC—OH R R R3. 从Grignard试剂制备： C O H H + R MgX H C H OMgX R H2O H C H OH R C O H R' + R MgX R' C H OMgX R H2O R' C H OH R C O R'' R' + R MgX R' C R'' OMgX R H2O R' C R'' OH R