Photoinduced isomerization of 4-(4′-dimethylaminostyryl) pyridine N-oxide

被引：0
|
作者：
A. P. Kondratieva
N. Sh. Lebedeva
Yu. A. Gubarev
N. A. Pavlycheva
V. P. Andreev
G. A. Alper
R. S. Kumeev
机构：
[1] Russian Academy of Sciences,Institute of Solution Chemistry
[2] Petrozavodsk State University,undefined
来源：
Journal of Structural Chemistry | 2009年 / 50卷
关键词：
4-(4′-dimethylaminostyryl)pyridine N-oxide; photoirradiation; ⇄ ; isomerization; photostationary mixture;
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摘要：
The effects of photoirradiation on the conformation state of 4-(4′-dimethylaminostyryl)pyridine N-oxide was studied by spectral (EAS, 1H NMR, IR) and thermochemical methods. Trans→cis isomerization was found to proceed in 4-(4′-dimethylaminostyryl)pyridine N-oxide irradiated with light (λ ≤ 400 nm) in chloroform. The conversion of the trans form of 4-(4′-dimethylaminostyryl)pyridine N-oxide to the cis form depends on the time and intensity of irradiation. Maximum conversion was achieved when a photostationary mixture formed with a ratio of components trans:cis = 40:60. Further irradiation of the solutions of 4-(4′-dimethylaminostyryl)pyridine N-oxide in chloroform led to salification with HCl formed during the decomposition of CHCl3.
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页码：722 / 726
页数：4
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