DERIVATIVES OF SORBIC ACID THIOL ADDUCTS

被引：14

作者：

KHANDELWAL, GD

WEDZICHA, BL

机构：

[1] Procter Department of Food Science, University of Leeds, Leeds

来源：

FOOD CHEMISTRY | 1990年 / 37卷 / 03期

关键词：

D O I：

10.1016/0308-8146(90)90134-P

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ethyl and methyl sorbate react with thiols in the corresponding alcohol as solvent and with sodium alkoxide as catalyst. Nucleophilic attack by alkylthiols leads to the formation of diadducts (2,3- and 4,5-addition of H+ RS-) whilst reaction with mercaptoethanol, esters of 2-mercaptoacetic acid, and cysteine ethyl ester gives the 2,5-addition product. Detailed consideration is given to the location of the double bond in position 3. Attempted hydrolysis of the esters causes dissociation of monoadducts liberating sorbic acid. However, if sorbic acid is allowed to react with cysteine in a predominantly aqueous medium, and the product esterified, it is identical to that formed from the esters of sorbic acid and of cysteine. © 1990.

引用

页码：159 / 169

页数：11

共 9 条

[1] C-13 NMR OF SOME INSECT ATTRACTANTS AND RELATED COMPOUNDS [J].