Isolable cyclic (alkyl)(amino)carbene–phosphonyl radical adducts. Issue 9 (8th January 2020) - Livshits-Kritsman, Yulia
Abstract : Isolable cAAC–phosphonyl radical adducts were prepared; interestingly, some of them show typical phosphorus-centered radical reactivity under UV irradiation. Abstract : Phosphonyl radicals ([R2 PO]˙) and their adducts are proposed as intermediates in a number of important chemical and biological processes. Despite the great interest in these species, there are no examples of stable, isolated phosphonyl radicals or their adducts reported in the literature. Here we report the synthesis, EPR and theoretical study of stable, isolable cyclic (alkyl)(amino)carbene (cAAC)–phosphonyl radical adducts, [cAAC–P(O)R2 ]˙ (R = OPr i, Ph).