Stable Free Radicals. 8. Photochemical Decomposition of 1,8-Biphenylenediyl Bismethyl and o-Xylenyl Pyridinyl Diradicals

Edward M. Kosower*, Avraham Teuerstein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The photosensitivity of 1-benzyl-4-carbomethoxypyridinyi radicals has been found also in the pyridinyl diradicals, 1,8- biphenylenediyl bismethyl and o-xylenyl, and their magnesium complexes. In neither series is the quantum yield of decomposition especially high. Irradiation in the visible absorption band does not cause photodecomposition, but does apparently favor the formation of the most highly absorbing magnesium complexes. Irradiation in the first strong absorption band of the radical (near 400 nm) is more effective than irradiation in the short wavelength absorption band (260 nm) for causing photodecomposition. A specific synthesis for 1,8-dimethylbiphenylene has been developed.

Original languageEnglish
Pages (from-to)1182-1185
Number of pages4
JournalJournal of the American Chemical Society
Volume100
Issue number4
DOIs
StatePublished - 1978

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