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タイトル: | The effect of pressure on the rate of the benzidine rearrangement IV : 2,2'-dimethoxyhydrazobenzene |
著者: | Osugi, Jiro Sasaki, Muneo Onishi, Ichiro |
著者名の別形: | オオスギ, ジロウ ササキ, ムネオ オオニシ, イチロウ |
発行日: | 20-Dec-1970 |
出版者: | The Physico-Chemical Society of Japan |
誌名: | The Review of Physical Chemistry of Japan |
巻: | 40 |
号: | 1 |
開始ページ: | 39 |
終了ページ: | 47 |
抄録: | The effect of pressure on the rate of acid-catalyzed rearrangement of 2, 2'-dimethoxyhydrazobenzene in 85 vol% aqueous-ethanolic solution was studied under the conditions of 5~25℃, 1~2, 000kg/cm^2. As a result, it was confirmed that the rearrangement and the disproportionation reactions concurred and both were of first order with respect to the concentration of hydrogen ion. It was found that the rearrangement reaction was strongly accelerated but the disproportionation retarded by pressure, so it was thought that each reaction of rearrangement and of disproportionation passed through the different transition state. Considering the activation parameters, i.e. E_1≠10.0 kcal/mole, ΔS_1≠=-24 e.u., ΔV_1≠=-12 cc/mole far rearrangement and E_2≠=14.4 kcal/mole, ΔS_2≠=-11 e.u., ΔV_2≠=5 cc/mole for disproportionation reaction, the reaction schemes were discussed. |
URI: | http://hdl.handle.net/2433/46946 |
出現コレクション: | Vol.40 No.1 |
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