OH OCH2(CH2h2CH NO 2 KCO NO Ch3 (CH2) Br OH OCHoCH=CH OH Cho-ChchoCl OCHOCH-CH 2 OH ①D CH2 CH=CH? 200 ⑨D Claisen rearrangement
Organic Chemistry Organic Chemistry Xiamen Xiamen University University OH + CH 3(C H 2 ) 2CH 2Br OCH 2(C H 2 ) 2CH 3 K 2CO 3 NO 2 NO 2 CH 2 CHCH 2Cl OH + OH OCH 2CH CH 2 OCH 2CH CH 2 200 OH CH 2CH CH 2 C l a i s e n rearra n g e m e n t
OCHCH-CHCH OH LCHCH-CH2 200 CH OCHCH-=CH OH CH CH CH CH 200 CHCH=CH
Organic Chemistry Organic Chemistry Xiamen Xiamen University University OCH 2CH CHCH 3 200 OH CHCH CH 2 CH 3 OCH 2CH CH 2 200 OH CH 3 CH 3 CH 3 CH 3 CH 2CH CH 2
反应机理 O OH 协同反应
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 反应机理 O O O OH 协同反应
CH CH CH CH CH CH CH OH CH CH ①D CH CH ⑨D
Organic Chemistry Organic Chemistry Xiamen Xiamen University University O O O CH 3 CH 3 CH 3 CH 3 CH CH 3 3 O CH CH 3 3 O CH 3 CH 3 OH CH 3 CH 3
酰基化反应及 Fries重排 酚直接酯化较困难 OH R H rohs + h2o H2sO4 OH CH3(CH2)4CO2H ①D 回流分水 6h70 ⑨D CH3(CH2)4C02 22h~100%
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 酰基化反应及Fries重排 OH + RCO 2 H H + O C R O + H 2 O OH + CH 3(C H 2 ) 4CO 2 H 回流分水 H 2SO 4 CH 3(C H 2 ) 4CO 2 6h 70% 22h ~100% 酚直接酯化较困难