碱催化下的反应机理: OH r CH3-C-CH3 CH3C-CH2←~CH3C=CH2 Br-Br CH3-CCH,Br +Br Br2 C-CH C-CH Br HOAC 69~770 t hBr
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 碱催化下的反应机理: CH 3 C C H 3 O OH CH 3 C C H 2 O CH 3 C C H 2 O Br Br CH 3 C C H 2Br O + Br C C H 3 O Br 2 HOA c C C H 2Br O + H B r 69 ~ 77%
3.卤仿反应 2 R-C-CH R一C-0+CHX Naoh 卤仿 Haloform reaction aliform OH 具有—C-CH CH-CH3结构的 鸟化合物都能发生反应碘仿反应可用于鉴别 碘仿CH3+黄色
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 3. 卤仿反应 C C H 3 O R X 2 NaOH C O O R + C H X 3 卤仿 H a l oform re a c t ion Ha l o fo r m C C H 3 O CH CH 3 OH 具有 结构的 化合物都能发生反应 碘仿反应可用于鉴别 碘仿CHI 3 黄色
反应机理 X OH R--C-CH3 NaoH RC-CX3-R-CτCx3 OH R-C-OH CX RC-0 CHX H R-C-OH
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 反应机 理 C C H 3 O R X 2 NaOH C OH O R + C X 3 C C X 3 O R OH C C X 3 O R OH C O O R + C H X 3 H + C OH O R
(1)X2,OH C-OH C (2)H (1)x2,OH (CH3)3C-C-CH (CH33C-C-OH (2)H (1)Cl2, KOH CH3 CH,CO,H (2)H CH3 CH,CO,H
Organic Chemistry Organic Chemistry Xiamen Xiamen University University C CH 3 O (1) X 2 , OH (2) H + C OH O (C H 3 ) 3CCC H 3 O (1) X 2 , OH (2) H + (C H 3 ) 3C C OH O O O (1) C l 2 , KOH (2) H + CH 3 C CH 3 CH 2CO 2 H CH 2CO 2 H