作者:Robert K. Norris、Rosalind J. Smyth-King
DOI:10.1016/0040-4020(82)80122-1
日期:1982.1
substitution reactions of nitrocyclohexanes 8, 9, 12 and 23 with various nucleophiles were studied and were found to proceed by the electron-transfer initiated SRN1 mechanism. Epimeric products were formed and the proportion of epimers under both thermodynamic and kinetic control normally reflected the bulk of the incoming nucleophile relative to the substituent which was present at the reaction site. In
nitrocyclohexanes的取代反应8,9,12和23研究了各种亲核物,并发现由发起的电子转移进行小号RN 1家机构。形成了差向异构体产物,并且在热力学和动力学控制下差向异构体的比例通常反映了相对于反应位点上存在的取代基而言,进入的亲核试剂的体积较大。在反应23与相对高浓度的PHS的-在HMPA反应的进行具有高stereoretention。从自由基构型的稳定性以及自由基阴离子离解和缔合的速率和模式的角度讨论了这些反应的结果。