- Synthesis of 5-(trifluoromethyl)cyclohexane-1,2,3-trione (cVTC): new trifluoromethyl building block
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A simple synthesis of 5-(trifluoromethyl)cyclohexane-1,2,3-trione is demonstrated in one step, by reacting 5-(trifluoromethyl)cyclohexane-1,3-dione with cerium(IV)ammonium nitrate (CAN) in methanol. The compound represents a highly functionalized oxygen-r
- Obi, Chibuike D.,Okoro, Cosmas O.
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- Anodic Oxidation of 1,3-Cyclohexanedione to 1,2,3-Cyclohexanetrione
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1,3-cyclohexanedione can be electrochemically oxidized in aqueous sulfuric acid at platinum to the 1,2,3-cyclohexanetrione.Yields of about 76percent and current efficiencies up to 54percent were found.
- Wermeckes, Bernd,Ye, Siyu,Beck, Fritz
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- Displacement of Dinitrogen by Oxygen: A Methodology for the Catalytic Conversion of Diazocarbonyl Compounds to Ketocarbonyl Compounds by 2,6-Dichloropyridine-N-oxide
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Dirhodium(II) catalyzed dinitrogen extrusion from diazocarbonyl compounds by 2,6-dichloropyridine-N-oxide forms ketocarbonyl compounds in near-quantitative yields. Reactions occur at room temperature, and the pyridine product does not coordinate with dirhodium(II) to inhibit catalysis. Anhydrous tricarbonyl compounds, as well as dicarbonyl compounds, are conveniently prepared by this methodology, and they have been used in situ for catalytic ene and aldol transformations.
- Yu, Yang,Sha, Qiang,Cui, Hui,Chandler, Kory S.,Doyle, Michael P.
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supporting information
p. 776 - 779
(2018/02/09)
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- Facile synthesis of 1,2,3-tricarbonyls from 1,3-dicarbonyls mediated by cerium(IV) ammonium nitrate
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A mild and efficient protocol for the synthesis of vicinal tricarbonyl compounds from β-dicarbonyls in a single step using cerium(IV) ammonium nitrate as a catalytic oxidant is described. Ease of execution, wide substrate scope and the suitability for the synthesis of commercially important compounds like ninhydrin, alloxan and oxoline make this reaction particularly noteworthy.
- Sivan, Akhil,Deepthi, Ani
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supporting information
p. 1890 - 1893
(2014/03/21)
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