TaCl5-catalyzed reaction of 1-alkenes with n-alkyl Grignard reagents
作者:Rifkat M. Sultanov、Ruslan R. Ismagilov、Natal'ya R. Popod'ko、Artur R. Tulyabaev、Usein M. Dzhemilev
DOI:10.1016/j.jorganchem.2012.10.001
日期:2013.1
Tantalum-catalyzed reaction of organomagnesium compounds (OMCs), bearing normal alkyl radicals, with 1-alkenes to afford novel iso-alkylmagnesiums has been systematically studied for the first time. The probable mechanism of the reaction implying the intermediate formation of β,β′-dialkyl substituted tantalacyclopentanes is discussed.
Absolute Rate Constants for the Addition of Atomic Hydrogen to Monosubstituted and Trisubstituted Olefins
作者:Dennis D. Tanner、Liying Zhang、Pramod Kandanarachchi
DOI:10.1021/jp960189u
日期:1996.1.1
solution phase regioselective addition of atomic hydrogen to 1-methylcyclohexene. From this data and new data for the reactions of 1-octene, the absoluterates and activation parameters for the addition of hydrogen atom to an olefin can be extracted. A method was established to determine the absoluterate of addition of a hydrogen atom to a terminal olefin in the solution phase. The addition rate constants
建立了一种机制,用于形成由溶液相区域选择性地将原子氢加到1-甲基环己烯中而形成的产物。从该数据和1-辛烯反应的新数据中,可以提取出将氢原子加成到烯烃中的绝对速率和活化参数。建立了确定溶液相中氢原子向末端烯烃加成的绝对速率的方法。加入速率常数,ķ一个(25℃),1-辛烯[ ķ一个=(4.2±3.6)×10 9中号-1小号-1 ]和1-甲基环己烯[ ķ一个=(4.6±0.8)× 10 6 M -1s -1,-78°C]与乙烯的气相加成速率的公开值合理地吻合。大速率常数得到以下观察结果的支持:活化参数(对于1-辛烯,E a = 5.3±2.9 kcal / mol,log A = 14±3.5 M -1 s -1)与预期的快速值一致反应。
Metal-promoted cyclization. 28. Regioselective and diastereoselective alkyl-alkene and alkene-alkene coupling promoted by zirconocene and hafnocene
作者:Douglas R. Swanson、Christophe J. Rousset、Eiichi Negishi、Tamotsu Takahashi、Takashi Seki、Masahiro Saburi、Yasuzo Uchida
DOI:10.1021/jo00276a006
日期:1989.7
DZHEMILEV, U. M.;IBRAGIMOV, A. G.;MOROZOV, A. B.;MUSLUXOV, R. R.;TOLSTIKO+, IZV. AN CCCP. CEP. XIM.,(1991) N, S. 1607-1609
作者:DZHEMILEV, U. M.、IBRAGIMOV, A. G.、MOROZOV, A. B.、MUSLUXOV, R. R.、TOLSTIKO+