An Organometalllic Ni-IV Complex That Participates in Competing Transmetalation and C(sp(2))-O Bond-Forming Reductive Elimination Reactions

作者：Meucci Elizabeth A; Camasso Nicole M; Sanford Melanie S^*

来源：Organometallics, 2017, 36(2): 247-250.

DOI：10.1021/acs.organomet.6b00810

This communication describes the synthesis of an organometallic Ni-IV complex bearing a labile trifluoroacetate (OTFA) ligand via the oxidation of a Ni-II precursor with PhI(OTFA)(2). Intramolecular C(sp(2))-O bond-forming reductive elimination from this Ni-IV complex is relatively slow, requiring 6 h at 70 degrees C to reach completion. In contrast, transmetalation with TMSCF3 occurs within just 1 h at room temperature to generate a Ni-IV-CF3 complex. These studies show that intermolecular reactions such as transmetalation can be competitive with intramolecular reductive elimination processes at Ni-IV centers.

• 出版日期2017-1-23