练习:解释下列反应机理 OH CH3CHCHCH 3 HBr+(CH3) CCH2CH3 CH3CHCHCH CH CH 64% 36% CH HBr CH 3 CH 3 CH2OH Br OH OH 解:CH3 CHCHCH3 H2O CH? CHCHCH CH2C- CHCH CH CH CH Br CH3CHCHCH 3 CH练习：解释下列反应机理 CH3 CHCHCH 3 CH3 OH + HBr (CH3 ) 2 CCH2 CH3 Br 64% + CH3 CHCHCH 3 CH3 Br 36% CH3 CH2 OH HBr CH3 Br + CH3 解： CH3 CHCHCH 3 CH3 OH H CH3 CHCHCH 3 CH3 OH2 H2O CH3 C CH3 H CHCH3 Br CH3 CHCHCH 3 CH3 Br