Asymmetric addition of isocyanate compounds on chiral
triquinphosphoranes, tricyclic hydridophosphoranes, led by a total
diastereoselective opening of the diazaphospholidine ring. This provides
chiral bicyclic oxazaphospholidines in which an eight-membered ring is
fused to the oxazaphospholidine ring by the P–N bond.
Selective PN bond cleavage in chiral triquinphosphoranes promoted by zirconocene complexes
作者:Caroline Marchi、Alain Igau、Jean Pierre Majoral*、Gérard Buono*
DOI:10.1016/s0022-328x(00)00062-0
日期:2000.4
Chiral bicyclic phosphanes incorporating a five- and an eight-membered ring were prepared via selective P-N bond cleavage of chiral triquinphosphoranes induced by dimethylzirconocene Cp2ZrMe2 or diphenylzirconocene Cp2ZrMe2. (C) 2000 Elsevier Science S.A. All rights reserved.