On the Thermal Dissociation of Organic Compounds. XII. The Effects of the Substituents on the Thermal Dissociation of Substituted Phenylureas
作者:Shoichiro Ozaki、Tsutomu Nagoya
DOI:10.1246/bcsj.30.444
日期:1957.5
synthesized. The rate constants and ρ values of thermal dissociation of these ureas in fatty acids were determined. In 1,1-diethyl-3-arylureas, the ρ value of the dissociation reaction at 95°C. in chloro-acetic acid was −0.196, and it may be concluded that the protonation process seems to be the rate-determining step in the dissociation reaction of ureas in fatty acid. The activation energy was compared with
合成了 11 种新型
脲,1,1-
二乙基-3-芳基
脲和 1-戊基-3-芳基
脲。测定了这些
尿素在
脂肪酸中的热解离速率常数和 ρ 值。在 1,1-
二乙基-3-芳基
脲中,95°C 下解离反应的 ρ 值。在
氯乙酸中为-0.196,可以得出结论,质子化过程似乎是
尿素在
脂肪酸中解离反应的决速步骤。将活化能与其他
尿素进行比较。