Electronic absorption spectra of some analogues and derivatives of Michler's ketone
- 1 January 1971
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society B: Physical Organic
- p. 1468-1471
- https://doi.org/10.1039/j29710001468
Abstract
Analogues of Michler's ketone in which the terminal groups are effectively conjugated with the aromatic system give charge-resonance systems by protonation of the oxygen atoms in acid solution. In terminally bridged ketones, tendency of the amino-nitrogen atoms to conjugate with the aromatic rings is reduced when trimethylene groups are replaced by ethylene groups. Formation of a quinonoid cation is completely inhibited by the presence of crowding substituents adjacent to a dimethylamino-group.Keywords
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