SOFT AND HARD ACIDITY IN ION-EXCHANGED Y-ZEOLITES - REARRANGEMENT OF 2-BROMOPROPIOPHENONE ETHYLENE ACETAL TO 2-HYDROXYETHYL 2-PHENYLPROPANOATE

被引：15

作者：

BALDOVI, MV

CORMA, A

FORNES, V

GARCIA, H

MARTINEZ, A

PRIMO, J

机构：

[1] UNIV POLITECN VALENCIA,CSIC,INST TECNOL QUIM,APARTADO 22012,E-46071 VALENCIA,SPAIN

[2] UNIV POLITECN VALENCIA,DEPT QUIM,E-46071 VALENCIA,SPAIN

来源：

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS | 1992年 / 13期

关键词：

D O I：

10.1039/c39920000949

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The rearrangement of the cyclic ethylene acetal of 2-bromopropiophenone to 2-hydroxyethyl 1-phenylpropanoate is catalysed by zinc exchanged Y zeolites with higher activity than the conventional ZnCl2; hydrolysis of the acetal moiety owing to the Bronsted acid sites is one of the major side reactions, while the competitive formation of 5-methyl-6-phenyl-2,3-dihydro-1,4-dioxine increases with the softness of the Lewis acid centres.

引用

页码：949 / 951

页数：3

共 12 条

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