Reactivities of free ions and crown ether-complexes ion pairs in the protonation of fluorenylsodium by 9-methylfluorene
作者:Kam-Han Wong、Johannes Smid
DOI:10.1039/p29830000161
日期:——
tetrahydropyran (THP), 1,2-dimethoxyethane (DME), and tetrahydrofuran (THF). Ionpairs as well as free carbanions participate in the reaction. Their rate constants and the equilibrium constant of the reaction were determined. The rate constant of the free ions increases from 85 in THF to 1 300 I mol–1 s–1 in THP. These values are much higher than the rate constants for the tight ionpairs or those for DME-
在四氢吡喃(THP),1,2-二甲氧基乙烷(DME)和四氢呋喃(THF)中用分光光度法研究了9-甲基芴与芴基钠或其与二甲基二苯并-18-冠-6的络合物之间的质子夺取反应的机理。离子对以及自由碳负离子参与反应。确定它们的速率常数和反应的平衡常数。自由离子的速率常数从THF中的85增加到THP中的1300 I mol –1 s –1。这些值远高于紧密离子对或DME或冠络复合的松散离子对的速率常数,所有这些常数均等于或小于2 I mol –1 s –1。平衡常数在1和2.4之间变化,具体取决于溶剂和离子对的结构。
Beletskaya, I. P.; Solov'yanov, A. A.; Karpyuk, A. D., Journal of Organic Chemistry USSR (English Translation), 1982, vol. 18, # 7, p. 1179 - 1183
作者:Beletskaya, I. P.、Solov'yanov, A. A.、Karpyuk, A. D.、Kucheryavenko, O. P.、Reutov, O. A.
DOI:——
日期:——
Beletskaya, I. P.; Solov'yanov, A. A.; Karpyuk, A. D., Journal of Organic Chemistry USSR (English Translation), 1982, vol. 18, # 7, p. 1183 - 1187
作者:Beletskaya, I. P.、Solov'yanov, A. A.、Karpyuk, A. D.、Kucheryavenko, O. P.、Reutov, O. A.
DOI:——
日期:——
Photochemical generation of radical anions. An access to novel structures
作者:W. Huber
DOI:10.1016/s0040-4039(00)61874-9
日期:1985.1
The preparation of the radicalanions of tetrabenzocyclooctatetraene (TBCOT) and fluorene (FLH) by photochemical methods leads to the observation of novel structures.
通过光化学方法制备四苯并环辛酸酯(TBCOT)和芴(FLH)的自由基阴离子导致了新结构的观察。
Os'kina, I. A.; Vlasov, V. M.; Terekhova, M. I., Journal of Organic Chemistry USSR (English Translation), 1989, vol. 25, # 11.1, p. 2041 - 2044
作者:Os'kina, I. A.、Vlasov, V. M.、Terekhova, M. I.、Petrov, E. S.