Patent ID: 6372931
Filing Date: 2002-04-16
Classification: B01J,C07B,C07C,C07F

Abstract:
A catalyst of general formula: wherein:R7 represents an optionally substituted cyclopentadienyl group; A represents NR8, NR9, NHR8 or NR8R9 where R8 is H, C(O)R10, SO2R10, C(O)NR10R14, C(S)NR10R14, C(&boxH;NR14)SR15 or C(&boxH;NR14)OR15, R9 and R10 each independently represents an optionally substituted hydrocarbyl, perhalogenated hydrocarbyl or an optionally substituted heterocyclyl group, and R14 and R15 are each independently hydrogen or a group as defined for R10; B represents â€”Oâ€”, â€”OH, OR11, â€”Sâ€”, â€”SH, SR11, NR11, NR12, NHR12 or NR11R12 where R12 is H, C(O)R13, SO2R13, C(O)NR13R16, C(S)NR13R16, C(&boxH;NR16)SR17 or C(&boxH;NR16)OR17, R11 and R13 each independently represents an optionally substituted hydrocarbyl, perhalogenated hydrocarbyl or an optionally substituted heterocyclyl group, and R16 and R17 are each independently hydrogen or a group as defined for R13; E represents a linking group having at least one stereospecific center and wherein A and B are linked through 2, 3 or 4 atoms, said atoms being unsubstituted or substituted with substituents selected from the group consisting of halogen, cyano, nitro, hydroxy, amino, thiol, acyl, hydrocarbyl, perhalogenated hydrocarbyl, heterocyclyl, hydrocarbyloxy, mono- or di-hydrocarbylamino, hydrocarbylthio, esters, carbonates, amides, sulfonyl and sulfonamido groups; M represents a group VIII transition metal; and Y represents an anionic group, a basic ligand or a vacant site; provided that (i) when Y is not a vacant site that at least one of A or B carries a hydrogen atom.