ACID-CATALYZED ALCOHOLYSIS OF VERNONIA-GALAMENSIS OIL

被引：7

作者：

BRYANT, KAA ^{[1
]}

NWAONICHA, CP ^{[1
]}

ANDERSON, MA ^{[1
]}

AYORINDE, FO ^{[1
]}

机构：

[1] HOWARD UNIV,DEPT CHEM,WASHINGTON,DC 20059

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 1992年 / 69卷 / 10期

关键词：

ACETYLATION; ACID-CATALYZED ALCOHOLYSIS; HYDROXY ALKOXY; ESTERS; INFRARED SPECTROSCOPY; ISOMERIC MIXTURE; MASS SPECTROMETRY; PROTON NMR; SELECTIVE EPOXY OPENING; TRANSESTERIFICATION; VERNONIA-GALAMENSIS;

D O I：

10.1007/BF02541070

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

We have demonstrated the potential of Vernonia galamensis seed oil as a source of hydroxy alkoxy fatty esters. Reaction of the oil with various alcohols (methanol, ethanol, 1-propanol and 2-propanol), under acidic conditions, resulted in transesterification as well as epoxy ring opening in all cases. The major products, the hydroxy alkoxy fatty esters, constituted approximately 80% of the product mixtures, of which the 12-hydroxy-13-alkoxy isomers were the major constituents. These derivatives were isolated by solvent extraction and/or column chromatography to afford 78-80% of pure isomers. Alcoholysis with butanol resulted in a poor yield of the hydroxy butoxy esters. A discussion of the isolation and mass-spectrometric characterization of these new esters is provided.

引用

页码：1023 / 1026

页数：4

共 9 条

[1] RAPID TRANS-ESTERIFICATION AND MASS-SPECTROMETRIC APPROACH TO SEED OIL ANALYSIS [J].