Selone
In chemistry, a selone (also known as a selenoketone) is the structural analog of a ketone where selenium replaces oxygen. Selenium-77 is one of the isotopes of selenium that is stable and naturally occurring, so selenoketone-containing chemicals can be analyzed by nuclear magnetic resonance spectroscopy (NMR). Selones can be used as chiral derivatizing agents for 77Se-NMR.[1] Chiral oxazolidineselones can be used for stereoselective control of aldol reactions, analogous to the Evans aldol reaction that uses oxazolidinones, which allows 77Se-NMR to be used to determine the diastereomeric ratio of the aldol product.[2]
Selenobenzophenone reversibly dimerizes. It is known to undergo cycloaddition with 1,3-dienes in a reaction similar to the Diels-Alder reaction.[3]
Further reading
- Definition of Selones in the IUPAC Gold Book
References
- ^ J. Peng; J. D. Odom; R. B. Dunlap & L. A. Silks III (1994). "Use of a selone chiral derivatizing agent for the absolute configurational assignment of stereogenic center". Tetrahedron: Asymmetry. 5 (9): 1627–1630. doi:10.1016/0957-4166(94)80066-9.
- ^ L. Silks; D. Kimball; D. Hatch; et al. (2009). "Chiral N-Acetyl Selone-Promoted Aldol Reactions". Synthetic Communications. 39 (4): 641–653. doi:10.1080/00397910802419706. S2CID 96583069.
- ^ Erker, G.; Hock, R.; Krüger, C.; Werner, S.; Klärner, F. G.; Artschwager-Perl, U. (1990). "Synthesis and Cycloadditions of Monomeric Selenobenzophenone". Angewandte Chemie International Edition in English. 29 (9): 1067. doi:10.1002/anie.199010671.
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Functional groups
(only C and H)
hydrogen,
and oxygen
(only C, H and O)
| R-O-R | |
|---|---|
| carbonyl | |
| carboxy |
element,
not being
carbon,
hydrogen,
or oxygen
(one element,
not C, H or O)
| Nitrogen | |
|---|---|
| Phosphorus | |
| Sulfur | |
| Boron | |
| Selenium | |
| Tellurium | |
| Halo |
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