[EN] CHIRAL SPIRO COMPOUNDS AND THEIR USE IN ASYMMETRIC CATALYTIC REACTIONS<br/>[FR] COMPOSES CHIRAUX SPIRANIQUES ET LEUR UTILISATION DANS DES REACTIONS CATALYTIQUES ASYMETRIQUES
申请人:PENN STATE RES FOUND
公开号:WO2006028977A2
公开(公告)日:2006-03-16
The present invention provides a chiral ligand, represented by a formula or its enantiomer: formula (I) X and X' can be independently O, NH, NR, NCOR or S; each of Z1-Z7 and Z1'-Z7' can be independently H, alkyl, aryl, substituted alkyl, substituted aryl, alkoxyl, aryloxyl, nitro, amide, aryoxide, halide, hydroxyl, carboxylate, hetereoaryl, or a cyclic alkene, fused aryl, or cyclic ether group formed to from any two adjacent Z groups or any two adjacent Z' groups; Y and Y' can be independently OH, OR, NH2, NHR, NR2, SH, PR2, OPR2, NHPR2, OP(OR)2, COOH, COOK, CONHR, or a linking group formed from Y and Y' groups together. Processes of preparing these ligands, catalysts that employ them and methods of using the catalysts are also provided.