Novel chiral 1,5-diaza-3,7-diphosphacyclooctane ligands and their transition metal complexes
作者:Andrey A. Karasik、Roman N. Naumov、Oleg G. Sinyashin、Gennadii P. Belov、Helena V. Novikova、Peter Lönnecke、Evamarie Hey-Hawkins
DOI:10.1039/b300754e
日期:——
31P) and IR spectroscopy. The former technique revealed the presence of two inequivalent phosphorus atoms in 6r. The molecular structure of 1r confirmed the absolute configuration of the chiral centers and a chair-chair conformation of the heterocycle with equatorial orientation of the substituents on phosphorus and axial on nitrogen atoms. Compound 1s was used to form a palladium catalyst for the co-polymerisation