P-stereogenic secondary iminophosphorane ligands and their rhodium(I) complexes: taking advantage of NH/PH tautomerism

Angew Chem Int Ed Engl. 2012 Jul 9;51(28):6951-5. doi: 10.1002/anie.201201031. Epub 2012 Jun 13.

Abstract

Have a good SIP: P-stereogenic secondary iminophosphorane (SIP) ligands with a sulfonyl group attached to nitrogen have been prepared. In the presence of rhodium, the tautomeric equilibrium is shifted from the favored PH tautomer towards the P(III) tautomer, thereby allowing coordination of the SIP ligand through the P and O atoms. The resulting Rh complexes are effective in the [2+2+2] cycloaddition of enediynes with terminal alkynes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkynes / chemistry*
  • Catalysis
  • Molecular Structure
  • Nitrogen / chemistry*
  • Organophosphorus Compounds / chemistry*
  • Rhodium / chemistry*
  • Stereoisomerism

Substances

  • Alkynes
  • Organophosphorus Compounds
  • Rhodium
  • Nitrogen