4-Phenyl-1,2,4-triazoline-3,5-dione in the ene reactions with cyclohexene, 1-hexene and 2,3-dimethyl-2-butene. The heat of reaction and the influence of temperature and pressure on the reaction rate
作者:Vladimir D. Kiselev、Dmitry A. Kornilov、Helen A. Kashaeva、Lyubov N. Potapova、Alexander I. Konovalov
DOI:10.1002/poc.3277
日期:2014.5
the reaction volume (−25.0; −26.6; −cm3 mol−1) and reaction enthalpy (−155.9; −158.2; −150.2 kJ mol−1) have been obtained for the first time for the ene reactions of 4‐phenyl‐1,2,4‐triazoline‐3,5‐dione 1, with cyclohexene 4, 1‐hexene 6, and with 2,3‐dimethyl‐2‐butene 8, respectively. The ratio of the values of the activation volume to the reaction volume (∆V≠corr/ΔVr − n) in the ene reactions under
焓值(53.3; 51.3; 20.0 kJ mol -1),熵(-106; -122; -144 J mol -1 K -1),活化体积(-29.1; -31.0; -cm 3 mol -1),反应体积(-25.0; -26.6; -cm 3 mol -1)和反应焓(-155.9; -158.2; -150.2 kJ mol -1)首次获得的4-苯基-1,2,4-三唑啉-3,5-二酮1,与环己烯4,1-己烯6,并用2,3-二甲基-2-丁烯8,分别。活化体积与反应体积之比(∆ V ≠在研究的烯反应中,corr / ΔV r - n)1 + 4 → 5和1 + 6 → 7看起来是相同的,即1.16。熵的大负值和研究的反应1 + 4 → 5和1 + 6 → 7的活化量更好地对应于在确定反应速率的阶段活化的配合物的环状结构。这些烯反应的平衡常数可以估计为超过10 18 L m