Synthetic use of the primary kinetic isotope effect in hydrogen atom transfer 2: generation of captodatively stabilised radicals
作者:Mark E. Wood、Sabine Bissiriou、Christopher Lowe、Kim M. Windeatt
DOI:10.1039/c3ob40275d
日期:——
morpholin-2-ones bearing N-2-iodobenzyl and N-3-bromobut-3-enyl radical generating groups, only products derived from the more stabilised C-3, rather than the less stabilised C-5 translocated radicals, were formed after intramolecular 1,5-hydrogen atom transfer, suggesting that any kinetic isotope effect present was not sufficient to offset captodative stabilisation.
使用带有N -2-碘苄基和N -3-溴丁-3-烯基生成基团的C-3双氘吗啉-2-酮,仅衍生自稳定性更高的C-3而不是稳定性较差的C-在分子内1,5-氢原子转移后形成了5个易位基团,表明存在的任何动力学同位素效应不足以抵消俘获性稳定作用。