Effects of electron-withdrawing group on the photoisomerization of Tetraaryl-4H-thiopyran-1,1-dioxides

被引：1
|
作者：
Jafarpour, Farnaz [1 ]
Ramezani, Fatemeh [1 ]
Pirelahi, Hooshang [1 ]
机构：
[1] Univ Tehran, Dept Chem, Coll Sci, Tehran, Iran
来源：
HETEROATOM CHEMISTRY | 2008年 / 19卷 / 06期
关键词：
D O I：
10.1002/hc.20455
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Syntheses and photoisomerization of the new sulfone derivatives, 4,4-di (ptrifluoromethylphenyl)-2,6-diphenyl-4H-thiopyran-1,1-dioxide and 4-(p-trifluoromethylphenyl)-2,4,6-triphenyl-4H-thiopyran-1,1-dioxide, have been investigated. The relative molar ratios of the photoproducts are compared with those of 2,4,4,6-tetraphenyl-4H-thiopyran-1,1-dioxide as well as electron-donating substituted 4-methyl-2,4,6-triatyl-4H-thiopyran-1,1-dioxides as model compounds under identical experimental conditions using H-1 NMR spectroscopy. The results observed are discussed on the basis of a triplet excited state di-pi-methane rearrangement. (C) 2008 Wiley Periodicals, Inc.
引用
收藏
页码：557 / 561
页数：5
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