| Autor: |
Freidlin, L. Kh., Litvin, E. F., Yakubënok, V. V., Vaisman, I. L. |
| Zdroj: |
Russian Chemical Bulletin; May 1976, Vol. 25 Issue: 5 p952-958, 7p |
| Abstrakt: |
1.The rate of hydrogenation of cresol, alkylanillnes, aminophenols, and alkoxyanilines on Ru-Al2O3 in aqueous medium is 1.5–5 times as high as in ethanol. The reaction rate decreases in the series p- > m- > o-, as well as with increasing size of the alkyl substituent (C1-C6) and the introduction of alkyl and acetyl substituents into the amino group.2.Alkylanilines, aminophenols, phenylenediamines, and N-acetyltoluidines are hydrogenated with high selectivity; the yield of the basic product reaches 82–98%.3.In the case of hydrogenation of disubstituted benzenes under the investigated conditions, the composition of the stereoisomers formed is not determined by their thermodynamic stability — in all cases the cis-isomer predominates. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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