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The Photoaddition of Pyrroles to Arylethenes and Arylethynes

โœ Scribed by Austin, Mark ;Covell, Christopher ;Gilbert, Andrew ;Hendrickx, Ramon

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
378 KB
Volume
1997
Category
Article
ISSN
0947-3440

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โœฆ Synopsis

Abstract

The photochemical reactions of styrene, (E)โ€stilbene, phenylโ€ethyne, and diphenylethyne with pyrrole and Nโ€methylpyrrole have been investigated. The pyrroles quench the fluorescence of the phenylethenes and phenylethynes efficiently and broad structureless emissions attributed to exciplexes are observed from the Nโ€methylpyrrole systems. Substituted pyrroles (1:1 and 2:1 adducts) are formed from irradiation of the phenylethenes with pyrrole, and 2โ€styrylpyrroles result from the phenylethynes. Styrene, but none of the other arenes, undergoes photoaddition to Nโ€methylpyrrole in the presence of 10% acetic acid.

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