Synthesis, Coordination Properties, and Catalytic Application of Triarylmethane-Monophosphines
作者:Tomohiro Iwai、Ryotaro Tanaka、Masaya Sawamura
DOI:10.1021/acs.organomet.6b00752
日期:2016.12.12
A new class of triarylmethane-based phosphines (L1–L4) and their Pd(II) and Rh(I) complexes were synthesized and subsequently characterized by NMR spectroscopy and X-ray diffraction analysis. The reactions of these phosphines with [PdCl(π-allyl)]2 gave the square-planar Pd(II) complexes [PdCl(π-allyl)(L)] (L = L1–L4). The treatment of [PdCl(π-allyl)(L3)] and [PdCl(π-allyl)(L4)], which have CF3-substituted
合成了一类新的基于三芳基甲烷的膦 (L1-L4) 及其 Pd(II) 和 Rh(I) 配合物,随后通过 NMR 光谱和 X 射线衍射分析对其进行了表征。这些膦与 [PdCl(π-烯丙基)]2 的反应产生了方形平面 Pd(II) 配合物 [PdCl(π-烯丙基)(L)] (L = L1–L4)。用 LiOtBu 处理分别具有 CF3-取代的三芳基甲烷和 9-芳基芴部分的 [PdCl(π-烯丙基)(L3)] 和 [PdCl(π-烯丙基)(L4)] 得到 P,C(sp3) -螯合的钯环络合物。使用[RhCl(nbd)]2 作为Rh(I) 源,实验证明了C(sp3)-M 共价键和C(sp3)-H···M 相互作用之间的可逆性。三芳基甲烷-单膦 L1-L4 被应用于 Pd 催化的芳基硼酸与烯酮的 1,4-加成反应。