Derivatisation and transition metal chemistry of a new monophosphinite ligand: 2-(diphenylphosphinoxy)naphthyl

Abstract

Reaction of monophosphinite ligand, 2-(diphenylphosphinoxy) naphthyl, C₁₀H₇PPh₂ (<b>1</b>) with elemental sulphur or selenium gives the corresponding sulphide C₁₀H₇OP(S)Ph₂ (<b>2</b>) or

selenide C₁₀H₇OP(Se)ph₂ (<b>3</b>) derivatives. Reaction of <b>1</b> with [CpRu(PPh₃)₂Cl] gives monosubstituted complex, [CpRu(C₁₀H₇OPPh₂)(PPh₃)C1] (<b>4</b>) as well as the disubstituted

complex. [CpRu(C₁₀H₇PPh₂)₂Cl] (<b>5</b>) depending upon the reaction conditions. Treatment of <b>1</b> with [Rh(CO)₂Cl]₂ affords a <i>trans</i>-complex, [Rh(CO)(C₁₀H₇PPh₂Cl] (<b>6</b>). Reaction of <b>1 </b>with [Pd(COD)Cl₂] results in the formation of an unexpected chlorobridged dipalladium complex: [Pd (PPh₂O)( PPh₂OH)(μ-Cl)]₂ (7), whereas similar reaction with [pt(COD)Cl₂] gives <i>cis-</i>[Pt(C₁₀H₇PPh₂)₂Cl₂] (<b>8</b>) in good yield.