Novel isomerization of omega-phenylalkanals to phenyl alkyl ketones over cesium (lanthanum) oxide supported on mesoporous aluminosilicate molecular sieves and related materials

被引：27

作者：

Kloetstra, KR

vandenBroek, J

vanBekkum, H

机构：

来源：

CATALYSIS LETTERS | 1997年 / 47卷 / 3-4期

关键词：

omega-phenylalkanals; phenyl alkyl ketones; rearrangement; base catalyses; MCM-41 and HMS;

D O I：

10.1023/A:1019037912152

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel rearrangement of the omega-phenylalkanals phenylacetaldehyde, 3-phenylpropionaldehyde and 4-phenylbutyraldehyde towards phenyl alkyl ketones is reported. The liquid-phase isomerizations are catalyzed by cesium oxide or binary cesium-lanthanum oxide supported on the mesoporous aluminosilicate molecular sieves MCM-41 and HMS and on amorphous supports like silica-alumina and gamma-alumina. Beside the title reaction the aldol condensation is observed as a side-reaction. A mechanism is proposed in which the aromatic ring is involved in the rearrangement process. Factors governing the activities and product selectivities are presented.

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页码：235 / 242

页数：8

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