On the Thermal Dissociation of Organic Compounds. VI. The Effect of the Substituent and That of the Solvent on the Thermal Dissociation of Ureas
作者:Teruaki Mukaiyama、Sh\={o}ichiro Ozaki、Toshio Hoshino
DOI:10.1246/bcsj.27.578
日期:1954.9
rate constants of the thermal dissociation of 1,1-dimethyl, 1,3-diethyl, 1,3-diisopropyl, 1,1, 3-triethyl, 1, 3-dihexyl, 1,3-dibenzyl, 1, 1-diethyl-3-isopropyl and 1,3-di-t-butyl ureas in n-butyric,n-caproic,n-capric, phenylacetic and benzoic acids were deter mined. The effects of substituents and those of solvents on the reaction rate were discussed. The transition state of the dissociation containing
1,1-二甲基, 1,3-二乙基, 1,3-二异丙基, 1,1, 3-三乙基, 1, 3-二己基, 1,3-二苄基, 1, 1-的热解速率常数测定了正丁酸、正己酸、正癸酸、苯乙酸和苯甲酸中的二乙基-3-异丙基和 1,3-二-叔丁基脲。讨论了取代基和溶剂对反应速率的影响。考虑了包含两个脂肪酸和一个尿素分子的解离的过渡态,并通过所提出的机制合理地解释了实验结果。