The enantioface-differentiating hydrogenation of the C=O double bond with asymmetrically modified raney nickel. XXXIX Repeated uses of the catalyst in the hydrogenation of 2-alkanones.

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概要

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• The durability of tartaric acid-sodium bromide-modified Raney nickel in the hydrogenation of 2-octanone was investigated. A remarkable lowering of the optical yield was observed in the repeated use of the catalyst. A lack of sodium ions in the reaction system was found to be the origin of this phenomenon. The addition of sodium ions to the reaction mixture was useful for attaining high optical yields in the repeated uses of the catalyst.

• 公益社団法人 日本化学会の論文

著者

• Harada Tadao

  Institute for Protein Research, Osaka University

• Osawa Tsutomu

  Institute for Protein Research, Osaka University

関連論文

• The enantioface-differentiating hydrogenation of the C=O double bond with asymmetrically modified raney nickel. XXXIX Repeated uses of the catalyst in the hydrogenation of 2-alkanones.
• The preparation of optically pure 3-hydroxyalkanoic acid. The enantioface-differentiating hydrogenation of the C=O double bond with modified Raney nickel. XXXVII.
• The enantioface-differentiating hydrogenation of the C=O double bond with asymmetrically modified raney nickel. XXXIII. The preparation of (R)- and (S)-1,3-butanediol from 4-hydroxy-2-butanone.
• Stereochemical studies of the hydrogenation with asymmetrically modified nickel catalysts; the hydrogenation of methyl 2-alkyl-3-oxobutyrate.
• The stereo-differentiating (asymmetric) hydrogenation of the C=O double bond with a modified nickel catalyst. XXXV. A facile method for the preparation of optically pure .BETA.-diols.
• Stereochemical studies of the hydrogenation with an asymmetrically modified Raney nickel catalyst. The hydrogenation of acetylacetone.
• Stereochemical investigation on asymmetrically modified Raney nickel catalyst. Mode of interaction between modifying reagent and substrate in the enantioface-differentiating process.

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