称取2-5g样品到索氏样品套管中 添加150mL溶剂到索氏烧瓶中 按每小时4-6循环萃取16-24小时 冷却 对萃取液进行浓缩 用适当的溶剂进行复溶 ←定容 进行仪器分优器信鼠网 w instrument com gn
CH3 Naoh CH3CH2CHO +(CH3)2 CHCHO CH3 CH2CH-C-CHO 25°C OH CH3 NaoH CH3CH2CHO +(CH3)2 CHCHO B0C(CH3)2CHCH=C-CHO CH 3 NaOH H3C CHCH2CHO +CH-COCH3 30C H3C CHCH2CH=CHCOCH3 H3C 60% 長春王大孝CCUT CHANGOHUN UNIVERSITY OF TECHNOLOGY
+ 30℃ 80℃ 25℃ NaOH CH3CH2CHO (CH3) 2CHCHO CH3CH2CH C CHO CH3 OH CH3 CH3CH2CHO + (CH3) 2CHCHO NaOH (CH3) 2CHCH C CHO CH3 CHCH2CHO H3C H3C + CH3COCH3 NaOH CHCH2CH H3C H3C CHCOCH3 60%
酸催化: O OH -HCI CH3CCH3+H-CI-CH3C-CH2-H+Cl -CH3C=CH2 羰基质子化及烯醇的生成酮的缩合反应常在 酸催化下进行。 OH CH3 OH CH 3 CHaC=CH2 +C=OH=CH3C-CH2-C-OH CH 3 CH 烯醇进攻质子化的羰基 OH CH CH-C-CH2C-OH-CH3C-CHC-OH-H20,-H* 2 CH,CCH=CCH CH
酸催化： CH3CCH3 O + H Cl CH3C CH2 OH H + Cl CH3C CH2 OH -HCl CH3 C CH2 OH + C CH3 CH3 OH CH3 C CH2 OH C CH3 CH3 OH 羰基质子化及烯醇的生成 烯醇进攻质子化的羰基 CH3C CH2 OH C CH3 CH3 OH CH3C CH O C CH3 CH3 OH2 H -H2O, -H CH3CCH O CCH3 CH3 酮的缩合反应常在 酸催化下进行
1)自身缩合(一般用碱性催化剂) Naoh CH3CH2CH2CH--C--CHO 25°C OH 2CH3CH2CH2CHO CH2CH3 Naoh cH3CH2CH2CH=C—cHo 80°C CHC CH3 A I(t-buo)4 H3PO4 +③ OH 長春王大孝CCUT CHANGOHUN UNIVERSITY OF TECHNOLOGY
1）自身缩合 （一般用碱性催化剂） CH3 CH2 CH2 CH OH H C CHO CH2 CH3 CH3CH2CH2CH C CHO CH2CH3 2CH3CH2CH2CHO NaOH 25℃ NaOH 80℃ OH O O O H3 PO4 O + Al(t-BuO) 4
应用:2-乙基己醇(异辛醇)的生产 5% NaOH Ho/Ni 2CHaCHO CHCH=CHCHO 15~18°C 140~150°C 10%o NaoH CHa CH CHCHO CHO 70~80C H/Cu OH 160°C 長春王大孝CCUT CHANGOHUN UNIVERSITY OF TECHNOLOGY
应用：2-乙基己醇（异辛醇）的生产 2CH3 CHO 5% NaOH 15~18 o C CH3 CH=CHCHO H2 /Ni 140~150 o C CH3 CH2 CH2 CHO 10% NaOH 70~80 o C CHO H2 /Cu 160 o C OH