Facile synthesis of phosphaamidines and phosphaamidinates using nitrilium ions as an imine synthon

Tom Van Dijk, Sebastian Burck, Mark K. Rong, Amos J. Rosenthal, Martin Nieger, J. Chris Slootweg, Koop Lammertsma

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)

Abstract

Readily accessible nitrilium triflates are convenient imine building blocks for the expedient synthesis of a novel class of 1,3-P,N ligands as demonstrated for the reaction with primary phosphanes. This procedure allows variation of all substituents. X-ray crystal structures are reported for nitrilium ions, phosphaamidines, and three phosphaamidinate complexes. The lithium phosphaamidinate is N coordinated and its reaction with [AuCl(tht)] (tht=tetrahydrothiophene) gives a unique P-bridged gold trimer, while a P,N-bidentate complex results from [{RhCl(cod)}2]. The nitrilium ion methodology allows extension of the 1,3-P,N motive to bis(imino)phosphanes, which are the neutral phosphorus analogues of the valuable β-diketiminate ligand.

Original languageEnglish
Pages (from-to)9068-9071
Number of pages4
JournalAngewandte Chemie - International Edition
Volume53
Issue number34
DOIs
Publication statusPublished - 18 Aug 2014
Externally publishedYes

Keywords

  • N,P ligands
  • cations
  • density functional calculations
  • ligand design
  • synthetic methods

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry

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