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Volume 32, Issue 12
Displaying 1-8 of 8 articles from this issue
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Yasushi HISHIKI1974Volume 32Issue 12 Pages 971-988
Published: December 01, 1974
Released on J-STAGE: November 13, 2009
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Tadashi SATO1974Volume 32Issue 12 Pages 989-1001
Published: December 01, 1974
Released on J-STAGE: November 13, 2009
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Yoshio ORITO, Shuichi NIWA, Sumi IMAI1974Volume 32Issue 12 Pages 1002-1005
Published: December 01, 1974
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSThe effects of solvents on the hydrogenation of acetone were studied by using the following catalysts ; Ni, Ni-C, Ni-Al2O3, Ni-SiO2 Ni-SiO2-Al2O3, and Ni-MgO. Solvents used were water, ethanol, 2-propanol, cyclohexane and dioxane. The reaction with nickel catalysts proceeded faster when 2-propanol was used as a solvent in all the cases, while it proceeded more slowey when dioxane was used as a solvent. The solvent-water showed a remarkable promotion effect for the reaction in most cases, but in the cases of SiO2-and SiO2-Al2O3-supported catalysts, it showed slight promotion effect only in the region of high acetone concentrations.
On the other hand, the reaction was slower in ethanol solution with most catalysts, but this suppression was not observed in SiO2-Al2O3-supported catalyst. In Ni-MgO catalyst, however, the promotion effect was found in ethanol solution in the region of high acetone concentration.View full abstractDownload PDF (448K) -
Juichi TANAKA, Kazuo ADACHI1974Volume 32Issue 12 Pages 1006-1009
Published: December 01, 1974
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESS4-Methoxyeudalene was synthesized from p-methylanisole. 3-(2-Methoxy-5-methylbenzoyl) propionic acid (1) was converted to 5-methoxy-8-methyl-1, 2, 3, 4-tetrahydronaphthalene-1-one (3). Ethyl 5-methoxy-8-methyl-1-oxo-1, 2, 3, 4-tetrahydronaphthalene-2-carboxylate (5), which was obtained by condensation with ethyl oxalate followed by pyrolysis of (3), was isopropylated and then hydrolyzed to give 2-isopropyl-5-methoxy-8-methyl-1, 2, 3, 4-tetrahydronaphthalene-1-one (7a). 4-Methoxyeudalene (9a) was obtained by reduction followed by heating with sulfur of (7a). The demethylation of (9a) with HBr afforded 4-hydroxyeudalene along with a neutral substance. Similary, 1-methoxy-4, 6-dimethylnaphthalene (9b) and 1-methoxy-4-methylnaphthalene (9c) were obtained from (5) and (3), respectively.View full abstractDownload PDF (541K) -
Toshimi USUI1974Volume 32Issue 12 Pages 1010-1013
Published: December 01, 1974
Released on J-STAGE: November 13, 2009
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Hiroshi MISHIMA1974Volume 32Issue 12 Pages 1014-1018
Published: December 01, 1974
Released on J-STAGE: November 13, 2009
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Hiroshi HANI1974Volume 32Issue 12 Pages 1019-1021
Published: December 01, 1974
Released on J-STAGE: November 13, 2009
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[in Japanese], [in Japanese], [in Japanese]1974Volume 32Issue 12 Pages 1022
Published: December 01, 1974
Released on J-STAGE: November 13, 2009
JOURNAL FREE ACCESSDownload PDF (153K)
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