Processes for the preparation of alcohols
AssigneesJapan Science and Technology Corporation, Takasago International Corporation
InventorsHideyuki Ikehira, Kunihiko Murata, Eiji Katayama, Masami Kozawa, Toru Yokozawa, Takeshi Ohkuma, Takao Ikariya, Ryoji Noyori
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Abstract
Alcohols are produced in a practical and advantageous method, by the hydrogenation of a carbonyl compound under mild conditions, by reacting the carbonyl compounds with hydrogen in the presence of a bipyridyl derivative, a group VIII transition metal complex, and a base, or by reducing a carbonyl compound in the presence of a bipyridyl derivative, a group VIII transition metal complex, a base, and an alcoholic solvent.
Claims4
A method for producing alcohols, comprising the reaction of carbonyl compounds with hydrogen in the presence of a 2,2′-bipyridyl, a ruthenium complex represented by the following general formula (b)
- M1XmLn (b),
- wherein M1 represents ruthenium, X represents a hydrogen atom, a halogen atom, an alkoxy group or a hydroxy group, L represents an organic ligand, and m and n are each an integer of 0 to 6 where 0<m+n≦6, and a base selected from the group consisting of a hydroxide of an alkali metal, a salt of an alkali metal, a hydroxide of an alkaline earth metal, a salt of an alkali earth metal, and a quaternary ammonium salt, at a temperature of 25 to 40° C.
A method for producing alcohols, comprising the reduction of carbonyl compounds in the presence of a 2,2′-bipyridyl, a ruthenium complex represented by the following general formula (b)
- M1XmLn (b),
- wherein M1 represents ruthenium, X represents a hydrogen atom, a halogen atom, an alkoxy group or a hydroxy group, L represents an organic ligand, and m and n are each an integer of 0 to 6 where 0<m+n<6, a base selected from the group consisting of a hydroxide of an alkali metal, a salt of an alkali metal, a hydroxide of an alkaline earth metal, a salt of an alkali earth metal and a quaternary ammonium salt, and an alcoholic solvent, at a temperature of 25 to 40° C.
Dependencies are inferred from the claim text.