PHOTO-OXYGENATION AND AUTOXIDATION OF DIPYRRYLMETHENES AND DIPYRRYLMETHANES

被引:2
作者
NORRIS, RD
LIGHTNER, DA
机构
[1] Department of Chemistry, University of Nevada, Reno, Nevada
关键词
D O I
10.1002/jhet.5570160214
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The dye‐sensitized photooxygenations of 4,4′‐diethyl‐3,5,3′5′‐tetramethyldipyrrylmethene and 4,4 ‐diethyl‐3,5,3′5‐tetramethyldipyrrylmethane have been investigated in neutral, basic and acidic methanol solution. Several photoproducts are common to the photooxygenation of both substrates. The dipyrrylmethene was detected as an intermediate in the photooxygenation of the dipyrrylmethane; however, it was determined not to be an important precursor to monopyrrole products. Autoxidations of the two dipyrrole compounds were also investigated and were found to be slower than the corresponding photooxygenation. Autoxidation and photooxygenation were both found to be faster in basic than in acidic methanol with the dipyrrylmethane faster than with the dipyrrylmethene in the same solvent. Copyright © 1979 Journal of Heterocyclic Chemistry
引用
收藏
页码:263 / 272
页数:10
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