Chiral phosphine ligands, their preparation, catalysts thereof and their use
申请人:The Hong Kong Polytechnic University
公开号:EP1747205B1
公开(公告)日:2012-06-20
PHARMACEUTICAL COMPOSITIONS
申请人:The Hong Kong Polytechnic University
公开号:EP1747205A1
公开(公告)日:2007-01-31
Chiral Tertiary Aminoalkylnaphthols
申请人:Chan Sim-Chi Albert
公开号:US20070225497A1
公开(公告)日:2007-09-27
The present invention provides bipyrimidinyl diphosphine compounds of the formula
wherein R is optionally substituted alkyl, cycloalkyl, aryl or heteroaryl; R′ and R″ are independently optionally substituted alkyl, cycloalkyl, aryl or heteroaryl; or an enantiomer thereof; or an enantiomeric mixture thereof. The compounds of the formula (I) are chiral atropisomeric bipyrimidinyl diphosphine compounds and, thus, may be employed as ligands to generate chiral transition metal catalysts which may be applied in a variety of asymmetric reactions, e.g., in palladium catalyzed asymmetric allylic substitution reactions. The compounds of the present invention are easily accessible in high enantiomeric purity according to the methods disclosed herein.
CHIRAL TERTIARY AMINOALKYLNAPHTHOLS
申请人:Chan Albert Sun-Chi
公开号:US20080255356A1
公开(公告)日:2008-10-16
The present invention provides bipyrimidinyl diphosphine compounds of the formula
wherein
R is optionally substituted alkyl, cycloalkyl, aryl or heteroaryl;
R′ and R″ are independently optionally substituted alkyl, cycloalkyl, aryl or heteroaryl; or an enantiomer thereof; or an enantiomeric mixture thereof.
The compounds of the formula (I) are chiral atropisomeric bipyrimidinyl diphosphine compounds and, thus, may be employed as ligands to generate chiral transition metal catalysts which may be applied in a variety of asymmetric reactions, e.g., in palladium catalyzed asymmetric allylic substitution reactions. The compounds of the present invention are easily accessible in high enantiomeric purity according to the methods disclosed herein.