Patent ID: 6444833
Filing Date: 2002-09-03
Classification: C07D,C07F,C08F,Y10S

Abstract:
A metallocene compound of the general formula (I): whereinY is a moiety of formula (II) â€ƒwherein A, B and D, same or different from each other, are selected from an element of the groups 14 to 16 of the Periodic Table of the Elements (new IUPAC version), with the exclusion of nitrogen and oxygen; R1, R2, R3, R4 and R5, same or different from each other, are selected from hydrogen, a C1-C20-alkyl, C3-C20-cycloalkyl, C2-C20-alkenyl, C6-C20-aryl, C7-C20-alkylaryl, C7-C20-arylalkyl radical, optionally containing heteroatoms; wherein two R3 can form a ring comprising 4 to 8 atoms, and R3 and R4 can form a ring comprising 4 to 8 atoms, which can bear substituents; with the proviso that when s is 0 or when R3 is hydrogen, R2 is not hydrogen; n, m and s are selected from 0, 1 and 2; n, m and s being 0 when A, B and D are selected from an element of the group 16 of the Periodic Table of the Elements (new IUPAC version); n, m and s being 1 when A, B and D are selected from an element of the group 15 of the Periodic Table of the Elements (new IUPAC version); n, m and s being 1 or 2 when A, B and D are selected from an element of the group 14 of the Periodic Table of the Elements (new IUPAC version); and wherein the ring containing A, B and D can have double bonds in any of the allowed positions; Z is selected from a moiety of formula (II) as described above and from a moiety of formula (III): wherein R6, R7, R8 and R9, same or different from each other, are selected from hydrogen, a C1-C20-alkyl, C3-C20-cycloalkyl, C2-C20-alkenyl, C6-C20-aryl, C7-C20-alkylaryl, C7-C20-arylalkyl radical, optionally containing heteroatoms, R7 being different from hydrogen; optionally R6 and R7 can form a ring comprising 4 to 8 carbon atoms, which can bear substituents; and when Z is a moiety of formula (II), Y and Z can be the same or different from each other; L is a divalent bridging group; M is an atom of a transition metal selected from those belonging to group 3, 4, 5, 6 or to the lanthanide or actinide groups in the Periodic Table of the Elements (new IUPAC version), X, same or different, is a hydrogen atom, a halogen atom, a R10, OR10, OSO2CF3, OCOR10, SR10, NR102 or PR102 group, wherein the substituents R10 are defined as R7; p is an integer of from 0 to 3, being equal to the oxidation state of the metal M minus 2.