Abstract
The photolysis of tetrahydrofuran (THF) solutions containing o-nitrophenols and di-t-butyl peroxide (DTBP) has been examined by e.s.r. spectroscopy. In carefully degassed solutions a series of 1,2-benzoquinone monohydroxyimine free radicals are formed, the structures of which have been confirmed using an unambiguous synthesis by oxidation of appropriate nitrosophenols in a flow system. The origin of hyperfine splittings is such radicals has been evaluated. Structures are tentatively proposed for free radicals observed during the photolysis of inefficiently degassed THF solutions of o-nitrophenols and DTBP; the same radicals are obtained when analogous nitrosophenols are photolysed under identical conditions.
| Original language | English |
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| Pages (from-to) | 1380-1384 |
| Number of pages | 5 |
| Journal | Journal of the Chemical Society, Perkin Transactions 2 |
| Issue number | 13 |
| Publication status | Published - 1975 |