CH CH on+慢 HO C Br CH3 CH, HCH CH3 (R)-2-Bromobutane CH 快 3 HO—Cmn H t Br 23 (S)-2-Butanol 构型翻转Organic Chemistry Organic Chemistry Xiamen Xiamen University University OH CH 3 C Br H CH 3CH 2 CH 3 HO C H CH 2CH 3 + + Br CH 3 C Br H CH 2CH 3 HO (R)-2-Bro m o b utane (S)-2-Butano l 慢 快 构型翻转