- SURFACE PHOTOCHEMISTRY: THE AMIDE PHOTO-FRIES REARRANGEMENT
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The Photo-Fries rearrangement of eight anilides on the surface of dry silica gel has been examined.The rearrangement occurs quite cleanly, giving somewhat more of the para isomer than that obtained in methanolic solution.A test for intermolecularity on the silica gel surface showed that, as in solution, the radical pair intermediates do not separate.This contrasts with the behaviour of a previously reported dibenzyl ketone derivate.
- Magdy, M.,Malik, Abdel-,Mayo, Paul de
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p. 1275 - 1278
(2007/10/02)
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- NEW REARRANGEMENTS OF ARYLHYDRAZONES IN POLYPHOSPHORIC ACID: FORMATION OF DIARYL THIOETHERS AND DIARYLAMINES
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When heated at 100 deg C with polyphosphoric acid, several dimethylphenylhydrazones of 4-mercaptoacetophenone, 9, and 4-aminodimethylacetophenones, 12, give 4-acetyl-4'-aminodiphenyl thioethers, 11, and 4-acetyl-4'-aminodiphenylamine derivatives, 16, together with products arising from other, known, paths.Mechanisms of formation of the products are discussed.
- Sannicolo, Franco
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p. 351 - 356
(2007/10/02)
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