Dicyclohexylphosphino cyrhetrene: Synthesis, characterization and catalytic evaluation toward Suzuki-Miyaura cross-coupling reaction of aryl bromides and chlorides

Diego Sierra, Germán Brito, MAURICIO DANIEL FUENTEALBA CARRASCO, A. Hugo Klahn

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Reaction of cyrhetrene ((η5-C5H5)Re(CO)3) with n-butyllithium (1.0 equiv, − 78 °C) and then ClPCy2 (Cy = cyclohexyl) gives the new cyrhetrenyl-phosphino ligand (η5-C5H4PCy2)Re(CO)3 which was isolated as a pure sample in 86% yield and characterized by standard spectroscopic techniques (FT-IR, 1H, 13C and 31P NMR), MS, X-ray diffraction and Elemental Analysis). This rhenium containing cyrhetrenyl phosphine combined with Pd(OAc)2 (2:1 mol ratio) resulted an efficient catalytic system for Suzuki couplings of aryl bromides and aryl chlorides with phenylboronic acid. The catalyst exhibits a high activity, with conversions of 100% after 20 min.

Original languageEnglish
Pages (from-to)30-33
Number of pages4
JournalInorganic Chemistry Communications
Volume88
DOIs
StatePublished - 1 Feb 2018

Keywords

  • Cyrhetrenyl phosphines
  • Organometallic ligands
  • Suzuki-Miyaura cross-coupling

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