Patent ID: 6077958
Filing Date: 2000-06-20
Classification: B01J,C07C,C07F

Abstract:
Chiral catalyst for stereocontrolled synthesis comprising a complex between a transition metal and a chiral diphosphine constituted by an aromatic pentatomic biheterocyclic ring system where said chiral diphosphine is constituted by an aromatic pentatomic biheterocyclic system having the following formula: ##STR14## where X is C or S; W is C or S; and with the proviso that only one of X or W is S;where R.sub.2 is selected from the group consisting of hydrogen, phenyl, aryl, linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, COOR.sub.3, where R.sub.3 is linear, branched, or cyclic alkyl C.sub.1 -C.sub.10 ;Y is selected from the group consisting of phenyl, substituted phenyl where substituents are selected from the group consisting of linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, halogen OR.sub.6 where R.sub.6 is linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, aryl, substituted aryl where substituents are selected from the group consisting of linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, halogen, OR.sub.6 where R.sub.6 is linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, linear branched, or cyclic alkyl C.sub.3 -C.sub.10 ;R.sub.1 is selected from the group consisting of phenyl, substituted phenyl where substituents are selected from the group consisting of linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, halogen, OR.sub.6 where R.sub.6 is linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, aryl, substituted aryl where substituents are selected from the group consisting of linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, halogen, OR.sub.6 where R.sub.6 is linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, OR.sub.5, where R.sub.5 is linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, oreach pentatomic heterocyclic aromatic ring of said system is optionally fused to an optionally substituted benzene or naphthalene ring, wherein the optional substituents are selected from among the group consisting of linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, halogen, OR.sub.6 where R.sub.6 is linear, branched, or cyclic alkyl C.sub.1 -C.sub.10, or unsubstituted according to the following formula: ##STR15## where X is S; or according to the following formula: ##STR16## where R.sub.4 is selected from the group consisting of hydrogen, linear, branched, cyclic, or unsubstituted alkyl C.sub.1 -C.sub.10, n ranges from 0 to 6.