- REMOTE OXIDATION OF KETONES TO γ- AND δ-DIKETONES
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A single stage remote oxidation of ketones to γ- and δ-diketones has been carried out in a sodium peroxysulfate-iron(II) sulfate system.
- Troyanskii, E.I.,Mizintsev, V. V.,Lazareva, M. I.,Demchuk, D. V.,Nikishin, G. I.
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p. 1879 - 1884
(2007/10/02)
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- A New Method for the Preparation of 1,5-Dicarbonyl Compounds from Bicyclic Ketals
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1,5-Dicarbonyl compounds have been prepared from bicyclic ketals in high yield under mild conditions by using aluminium chloride-sodium iodide in methylene dichloride.
- Jun, Jong-Gab,Suh, Seigi,Shin, Dong Gyun
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p. 1349 - 1350
(2007/10/02)
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- REGIOSELECTIVE HYDRATION OF ALKYNONES BY PALLADIUM CATALYSIS
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Diketones are regioselectively prepared from alkynyl ketones under mild conditions by palladium catalysis; 5-heptyn-2-one and 2-(2-nonynyl)cyclohexanone give 1,4-diketones whereas 2-(2-heptynyl)cyclopentanone and 5,6-didehydroprostaglandin E2 methyl ester afford 1,5-diketones.
- Imi, Katsuharu,Imai, Kumiko,Utimoto, Kiitiro
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p. 3127 - 3130
(2007/10/02)
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- A CONVENIENT PROCEDURE FOR CARBOXYLATION-ROBINSON ANNULATIONS OF KETONES USING TRIETHYLAMINE BASE IN THE PRESENCE OF MAGNESIUM CHLORIDE
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Carboxylation of ketones with carbon dioxide in the presence of magnesium chloride and triethylamine followed by reaction with methyl vinyl ketone gives satisfactory yields of Michael and Robinson annulation products.
- Olsen, Richard S.,Fataftah, Zakaria A.,Rathke, Michael W.
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p. 1133 - 1140
(2007/10/02)
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- THE PREPARATION OF 1,4-DICARBONYL COMPOUNDS BY PHOTOREACTION OF KETONES IN THE PRESENCE OF OXIDANTS
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Phenyl alkyl ketones were photo-irradiated in the presence of Cr(VI) or Mn(VII) oxidants to yield 1,4-dicarbonyl compounds regiospecifically while 2-octanone gave a regioisomeric mixture of 2,5-, 2,6-, and 2,7-octadiones.
- Mitani, Michiharu,Tamada, Mamoru,Uehara, Shin-ichi,Koyama, Kikuhiko
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p. 2805 - 2808
(2007/10/02)
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