Volume parameters of some Diels-Alder reactions involving C=C, C=S, and N=N bonds
作者:V. D. Kiselev、E. A. Kashaeva、L. N. Potapova、G. G. Iskhakova、A. I. Konovalov
DOI:10.1007/s11172-006-0075-8
日期:2005.9
up to 1000 kg cm−2 on the rate constants of the Diels-Alder reactions of maleic anhydride with 1,2,3,4-tetraphenylcyclopentadiene and with 6,13-dichloropentacene, of 4-phenyl-1,2,4-triazoline-3,5-dione with hexachlorocyclopentadiene, and of thiobenzophenone with isoprene was studied at 25 °C. The volume parameters and ratios of the activation to reaction volumes make it possible to exclude electrostriction
高达 1000 kg cm-2 的静水压力对马来酸酐与 1,2,3,4-四苯基环戊二烯和 4-苯基-的 6,13-二氯并五苯的 Diels-Alder 反应速率常数的影响在 25 °C 下研究了 1,2,4-三唑啉-3,5-二酮与六氯环戊二烯以及噻二苯甲酮与异戊二烯。体积参数和活化与反应体积的比率使得在所有研究的反应中的过渡态溶剂化过程中排除溶剂的电致伸缩成为可能,这对应于过渡态的非极性性质。