SHAPE-SELECTIVE PHOTOSENSITIZED ISOMERIZATION OF STILBENE USING A BENZOPHENONE INCORPORATED WITHIN ACID ZEOLITES

被引：20

作者：

BALDOVI, MV ^{[1
]}

CORMA, A ^{[1
]}

GARCIA, H ^{[1
]}

MARTI, V ^{[1
]}

机构：

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

来源：

TETRAHEDRON LETTERS | 1994年 / 35卷 / 50期

关键词：

D O I：

10.1016/S0040-4039(00)78567-4

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A series of heterogeneous photosensitizers has been obtained by immobilization of 4-aminobenzophene (ABP) within acid zeolites of medium and large pore size. The strong interaction between the amino substituent of ABP and the acid sites of the zeolite is revealed by the red-shift (ca. 50 nm) of the long wavelength absorption band in the UV/V is spectra of the composites. ABP when included within HZSM-5 (ABP-HZSM-5) behaves as the first shape-selective photosensitizer. Thus, trans-stilbene could be photochemically isomerized to cis-stilbene in the presence of ABP-HZSM-5, while the reverse cis to trans isomerization failed. According to the relative dimensions of the zeolite hosts, ABP incorporated within HY, H beta and HMOR showed no remarkable difference in the isomerization efficiency of both stilbene isomers.

引用

页码：9447 / 9450

页数：4

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