Submitted by: Submitted by narcissus1214
Views: 49
Words: 489
Pages: 2
Category: Science and Technology
Date Submitted: 09/16/2014 08:52 PM
33 2004 2
1 Applied Chemical I ndustry
Vol. 33 No. 1 F eb. 2004
李英春, 滕俊江
( , 266042)
: , 55~ 60 e , : ; : O 62514 , ; :A ; , , 75. 5% ,
, 60 e ; 70%
: 1671- 3206( 2004) 01- 0026- 02
Synthesis of ethyl vanillin by the phase transfer catalysis LI Ying -chun, T EN G Jun-j iang
( Colleg e of Chemistr y and Molecular Engineer ing , Q ing dao U niv ersity of Science and T echno logy, Qingdao 266042, China)
Abstract: Sy nt hesis of intermediate O- ethoxy pheny l et her and ethyl vanillin by the phase transfer cat alysis w as studied in t his paper and f act ors af fecting the sy nt hesis, such as t emperat ure, t he react ion time w ere discussed in this art icle. Af ter cont rasting the result s of a serial of experiment s, we found t he optimum synt hesis condition are as follow s: t he synt hesis of O- hy drox y pheny l ethyl ether t ook place at the tem perature 60 e ; t he synthesis of et hy l vanillin t ook place at t he t emperat ure from 55 e t o 60 e . T he result of t his st udy is t hat t he synt hesis w ay by using transfer cat alysis is pract ical and pro mosing. T he yield of O ethoxy pheny l et her can reach 75. 5% , and Et hylvanillin can reach 70% . Key words: et hy l vanillin; O- et hoxy phenol et her; phase t ransf er cat alysis; synt hsis 3 , , , 10% , - N, N , , , , , Reimer ) T iemann e , , , , , , , XT 4 1. 2 1. 2. 1 ; SP 2000 -4 -
1
1. 1
中间体邻乙氧基苯酚的制备 , , , , 60 , 30 min ( PEG 400) , 20 mL , , 5 h, pH 3~ 4, , , , , , , ,
,
,
: 2003 07 01 - : ( 1957- ) ,
,
,
,
,
: 13061307511, E mail: y ing chunli957@ sohu. com -
1
:
27
, 1. 2. 2 , , , pH , , 3 , , , 2~ 3, , , , , T iem ann , , Reimer ) T iem ann , 乙基香兰素的合成 , , , 5~ 6 h, 3 2. 2 ,
2
2
6 74. 5 8 71. 0
, , 2
/h /%
2 65. 0
4 75. 5
,4 h
,
Reimer )
,
2
2. 1 , , 1, 2 B , , , , 2. 1. 1 , 1
1
/e /% 50 65. 0 60 75. 5 70 71. 8 80 64. 8 90 63. 5
3
, B , , = 1B1B1( ) ( 1) , ( 110% ( 4 h, ( 2) : ) , PEG )...