DOI: 10.1135/cccc20051642. In situ Chiral Modification of Nickel Catalysts for Enantioselective Hydrogenation of Methyl Acetoacetate

In situ Chiral Modification of Nickel Catalysts for Enantioselective Hydrogenation of Methyl Acetoacetate

10.1135/cccc20051642

Crossref journal-article

Institute of Organic Chemistry & Biochemistry

Collection of Czechoslovak Chemical Communications (111)

Abstract

Chiral modifications of SiO2-supported and Raney nickel catalysts were studied. The catalysts were employed in asymmetric hydrogenation of methyl acetoacetate (MAA) to (R)- and (S)-enantiomers of methyl 3-hydroxybutanoate. The effects of modification parameters such as type and concentration of modifier; presence of a co-modifier and other additives, pH of modification solution on the enantioselectivity of MAA hydrogenation were discussed. Characteristic features of the in situ modification of Ni/SiO2 were also evaluated and the results obtained were compared with the conventional (premodification) approach. Parameters for the conventional and in situ methods were optimised in a series of experiments for both types of catalysts. The in situ modified Ni/SiO2 was found specifically suitable for repeated use due to virtually no decrease in selectivity and activity.

Bibliography

Bartek, L., KlusoÅ, P., & ÄervenÃ½, L. (2005). In situ Chiral Modification of Nickel Catalysts for Enantioselective Hydrogenation of Methyl Acetoacetate. Collection of Czechoslovak Chemical Communications, 70(10), 1642â1652.

Authors 3

Lukáš Bartek (first)
Petr Klusoň (additional)
Libor Červený (additional)

References 48 Referenced 3

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Dates

Type	When
Created	19 years, 9 months ago (Nov. 30, 2005, 1:30 a.m.)
Deposited	6 years, 11 months ago (Sept. 9, 2018, 9:57 a.m.)
Indexed	2 years ago (Aug. 25, 2023, 10:32 p.m.)
Issued	20 years, 7 months ago (Jan. 1, 2005)
Published	20 years, 7 months ago (Jan. 1, 2005)
Published Online	20 years, 7 months ago (Jan. 1, 2005)
Published Print	20 years, 7 months ago (Jan. 1, 2005)

Funders 0

None

BibTeX

@article{Bartek_2005, title={In situ Chiral Modification of Nickel Catalysts for Enantioselective Hydrogenation of Methyl Acetoacetate}, volume={70}, ISSN={1212-6950}, url={http://dx.doi.org/10.1135/cccc20051642}, DOI={10.1135/cccc20051642}, number={10}, journal={Collection of Czechoslovak Chemical Communications}, publisher={Institute of Organic Chemistry & Biochemistry}, author={Bartek, Lukáš and Klusoň, Petr and Červený, Libor}, year={2005}, pages={1642–1652} }

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