DOI: 10.1246/bcsj.52.2343. A Comparative Study of Nickel and Cobalt Catalysts in the Hydrogenation of Substituted Acetophenones. Dependence of Hydrogenation Rate and Adsorption Strength on Substituents and Solvents

A Comparative Study of Nickel and Cobalt Catalysts in the Hydrogenation of Substituted Acetophenones. Dependence of Hydrogenation Rate and Adsorption Strength on Substituents and Solvents

10.1246/bcsj.52.2343

Crossref journal-article

Oxford University Press (OUP)

Bulletin of the Chemical Society of Japan (286)

Abstract

Abstract The difference in the nature of nickel and cobalt catalysts has been investigated by a comparative study of the competitive hydrogenation of substituted acetophenones. The electronic and steric effects of substituents and the effects of solvents on the adsorption strength of acetophenones are greater for the reactions over R-Ni than for those over R-Co. On R-Co catalyst acetophenones substituted with electron attracting groups (3-methoxyl, 3-hydroxyl, and 4-fluoro groups with σ0&gt;0) are adsorbed more strongly than those with electron donating groups (2-, 3-, and 4-alkyl and 4-methoxyl groups with σ0&lt;0). Over R-Ni catalyst the adsorption of acetophenone is greater than that of any substituted acetophenones. The rates of hydrogenation over R-Ni are more susceptible to the effects of substituent and solvent than those over R-Co. Over both R-Ni and R-Co the rates of hydrogenation of unsubstituted acetophenones are greater than those of substituted acetophenones with either electron donating or electron attracting groups.

Bibliography

Kajitani, M., Suzuki, N., Abe, T., Kaneko, Y., Kasuya, K., Takahashi, K., & Sugimori, A. (1979). A Comparative Study of Nickel and Cobalt Catalysts in the Hydrogenation of Substituted Acetophenones. Dependence of Hydrogenation Rate and Adsorption Strength on Substituents and Solvents. Bulletin of the Chemical Society of Japan, 52(8), 2343â2348.

Authors 7

Masatsugu Kajitani (first)
Naoki Suzuki (additional)
Tsutomu Abe (additional)
Yoshimitsu Kaneko (additional)
Kazuhiko Kasuya (additional)
Kazunori Takahashi (additional)
Akira Sugimori (additional)

References 26 Referenced 16

{'key': '2024011715141870500_r1'}
10.1016/0021-9517(74)90179-1
10.1246/nikkashi1948.92.504
10.1002/recl.19690880109
10.1021/ja00867a021
{'key': '2024011715141870500_r6'}
10.1246/bcsj.47.1203
{'key': '2024011715141870500_r8'}
10.1135/cccc19753659
{'key': '2024011715141870500_r10'}
10.1016/0021-9517(72)90236-9
10.1016/S0021-9517(68)80007-7
10.1135/cccc19761894
10.1246/bcsj.34.407
10.1021/ja01210a059
{'key': '2024011715141870500_r16'}
{'key': '2024011715141870500_r17'}
{'key': '2024011715141870500_r18'}
10.1246/bcsj.48.2848
10.1246/bcsj.34.1294
10.1021/ie50509a029
10.1021/ed038p304
10.1246/nikkashi1948.86.873
{'key': '2024011715141870500_r24'}
10.1246/nikkashi1948.82.7_913
10.1016/0021-9517(77)90139-7

Dates

Type	When
Created	19 years, 1 month ago (July 19, 2006, 7:15 p.m.)
Deposited	1 year, 7 months ago (Jan. 17, 2024, 8:23 a.m.)
Indexed	1 year, 7 months ago (Jan. 20, 2024, 4:39 p.m.)
Issued	46 years ago (Aug. 1, 1979)
Published	46 years ago (Aug. 1, 1979)
Published Online	19 years, 4 months ago (April 19, 2006)
Published Print	46 years ago (Aug. 1, 1979)

Funders 0

None

BibTeX

@article{Kajitani_1979, title={A Comparative Study of Nickel and Cobalt Catalysts in the Hydrogenation of Substituted Acetophenones. Dependence of Hydrogenation Rate and Adsorption Strength on Substituents and Solvents}, volume={52}, ISSN={1348-0634}, url={http://dx.doi.org/10.1246/bcsj.52.2343}, DOI={10.1246/bcsj.52.2343}, number={8}, journal={Bulletin of the Chemical Society of Japan}, publisher={Oxford University Press (OUP)}, author={Kajitani, Masatsugu and Suzuki, Naoki and Abe, Tsutomu and Kaneko, Yoshimitsu and Kasuya, Kazuhiko and Takahashi, Kazunori and Sugimori, Akira}, year={1979}, month=aug, pages={2343–2348} }

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