One-step stereoselective synthesis and NMR chiral shift properties of a novel hexacoordinated phosphorus cation.
[reaction: see text] Tropolone, binol, and PCl(5) react in CH(2)Cl(2) at reflux to generate in one step a novel C(2)-symmetric hexacoordinated phosphorus cation of configuration controlled by the binol ligand. It behaves as an efficient NMR chiral shift agent for chiral anionic phosphate and borate anions.
Lacour
Jérôme
J
Département de Chimie Organique, Université de Genève, quai Ernest-Ansermet 30, CH-1211 Genève 4, Switzerland. jerome.lacour@chiorg.unige.ch
Vial
Laurent
L
Bernardinelli
Gérald
G