作者:Apurba L. Koner、Uwe Pischel、Werner M. Nau
DOI:10.1021/ol071165g
日期:2007.7.1
been presumed to be restricted to O-H hydrogen donors. We demonstrate that also abstractions from C-H and even Sn-H bonds by cumyloxyl radicals and n,pi*-excited 2,3-diazabicyclo[2.2.2]oct-2-ene are fastest in the gas phase and nonpolar solvents but slowest in acetonitrile. Accordingly, solvent effects on hydrogen abstractions are more general, presumably due to stabilization of the reactive oxygen
动力学溶剂对氢提取的影响,即在非极性溶剂中的加速作用,被认为仅限于OH氢供体。我们证明,由枯基氧基和n,pi *激发的2,3-二氮杂双环[2.2.2] oct-2-ene从CH甚至Sn-H键的提取在气相和非极性溶剂中最快,但在气相中最慢乙腈。因此,大概是由于极性溶剂中反应性氧或氮物种的稳定,溶剂对氢提取的影响更为普遍。