Modified catalyst for stereo-differentiating reduction of _carbo

Details Modified catalyst for stereo-differentiating reduction of _carbo Modified catalyst for stereo-differentiating reduction of _carbo

1979-04-25

1981-06-16

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

568807, 568814, 568830, 568862, 568863, 568881, C07C 69675, C07C 3126, C07C 3120, C07C 3326

Patent

active

042739330

ABSTRACT:
A modified nickel catalyst used for stereo-differentiating reduction of carbonyl compounds is provided. The modified nickel catalyst is prepared by soaking a nickel catalyst in an aqueous modifying medium having dissolved therein at least one inorganic salt, such as sodium bromide or sodium chloride, and at least one optically active substance, such as optically active hydroxy acid. The modified nickel catalyst exhibits enhanced activity for stereo-differentiating reduction and causes little or no side reactions, and thus, brings about an extremely high yield of the reaction product.

REFERENCES:
Izumi, "Angew. Chem. Intern. Ed." vol. 10, No. 12 (1971) pp. 871-881.
Orito et al., "Journal of Organic Synthetic Chemical Society" (Japan) 34, 236-239 (1976).
Orito et al., "Journal of Organic Synthetic Chemical Society" (Japan) 34, 672-674 (1976).
Orito et al., "Journal of Organic Synthetic Chemical Society" (Japan) 35, 753-754 (1977).

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