Diphosphine sulfides derived from 2,2'-biphosphole: novel chiral S,S ligands for palladium-catalyzed asymmetric allylic substitution.
Diphosphine sulfides derived from 2,2'-biphosphole have been efficiently synthesized in an enantiomerically pure form by a four step synthetic sequence. These S,S-ligands were used for the first time in Pd-catalyzed asymmetric allylic alkylation. Good yields and enantiomeric excess up to 73% were obtained.
Robé
Emmanuel
E
Laboratoire de Chimie de Coordination, CNRS, 205 Route de Narbonne, F-31007, Toulouse, Cedex, France.
Perlikowska
Wieslawa
W
Lemoine
Céline
C
Diab
Lisa
L
Vincendeau
Sandrine
S
Mikolajczyk
Marian
M
Daran
Jean-Claude
JC
Gouygou
Maryse
M