P-stereogenic secondary iminophosphorane ligands and their rhodium(I) complexes: taking advantage of NH/PH tautomerism.
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.
Unitat de Recerca en Síntesi Asimètrica-PCB, Institute for Research in Biomedicine, Universitat de Barcelona, Spain.
Thierry
T
León
Magda
M
Parera
Anna
A
Roglans
Antoni
A
Riera
Xavier
X
Verdaguer
D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry*; D009943:Organophosphorus Compounds / Q000737:chemistry*; D012238:Rhodium / Q000737:chemistry*; D013237:Stereoisomerism
D000480:Alkynes; D009943:Organophosphorus Compounds; D012238:Rhodium; D009584:Nitrogen