Enantio-differentiating hydrogenation of methyl acetoacetate (MAA) was carr
ied out using fine nickel powder (FNiP) by adding tartaric acid (TA) and so
dium salts to the reaction media (in situ modification) instead of using a
conventionally modified nickel catalyst. This catalyst prepared by the in s
itu modification gave an optical yield up to 79%. (C) 2000 Elsevier Science
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