Involvement of triplet excited states and olefin radical cations in electron-transfer cycloreversion of four-membered ring compounds photosensitized by (thia)pyrylium salts

被引：34

作者：

Miranda, MA ^{[1
]}

Izquierdo, MA ^{[1
]}

Galindo, F ^{[1
]}

机构：

[1] Univ Politecn Valencia, CSIC, Inst Tecnol Quim, Dept Quim, Valencia 46022, Spain

来源：

JOURNAL OF ORGANIC CHEMISTRY | 2002年 / 67卷 / 12期

关键词：

D O I：

10.1021/jo011103i

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Cycloreversion of 1,2,3,4-tetraphenylcyclobutanes 1a,b and oxetane 2 is achieved using (thia)pyrylium salts as electron-transfer photosensitizers. Radical cation intermediates involved in the electron-transfer process have been detected using laser flash photolysis. The experimental results are consistent with the reaction taking place from the triplet excited state of the sensitizer.

引用

页码：4138 / 4142

页数：5

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