Preparation of preparing substituted indanones

An indanone of the formula III,

• where
• X' is chlorine, bromine, iodine, triflate or mesylate
• R1 is a linear, branched or cyclic C1—C8—alkyl group
• Y9 and Y7 are hydrogen atoms and
• Y8 is a hydrogen atom or as defined for X'.

An indanone of the formula IV,

• where
• R1′ is a linear, branched or cyclic C1—C20—alkyl group,
• R3′ is a C6—C14—aryl group or a C7—C15—alkylaryl group,
• Y10 or Y12 are hydrogen atoms and
• Y11 or Y11 is a C6—C14—aryl or a C7—C10—alkylaryl group.

A metallocene compound of the formula VI

• where R1 is a linear, branched or cyclic C1-C8-alkyl group which may bear one or more identical or different fluorine or chlorine substituents, a phenyl group which may bear one or more identical or different fluorine or chlorine substituents, a C7-C12-alkylaryl or arylalkyl group, where the alkyl part may bear one or more identical or different fluorine or chlorine substituents and the aryl part may bear one or more identical or different fluorine or chlorine substituents, a C2-C8-alkenyl group or a C2-C8-alkynyl group, a C8-C12-arylalkenyl group which may bear one or more identical or different fluorine or chlorine substituents, or R1 is an OR2, SiR23 or —OSiR23 group, where R2 are identical or different and are each a C1-C4-alkyl group or phenyl group or R1 is a C1-C16-heterocyclic group, where the heteroatoms are oxygen, nitrogen, sulfur or silicon and the group may in turn bear C1-C10-radicals or heteroatoms as substituents,
• M is titanium, zirconium or hafnium,
• R9 and R10 are identical or different and are each a hydrogen atom, hydroxy or a halogen atom or a C1-C40-group such as C1-C10-alkyl, C1-C10-alkoxy, C6-C10-aryl, C6-C10-aryloxy, C2-C10-alkenyl, C7-C40-arylalkyl, C7-C40-alkylaryl, C8-C40-arylalkenyl, preferably hydrogen, C1-C3-alkyl, in particular methyl, C1-C3-alkoxy, C6-aryl, C6-aryloxy, C2-C10-alkenyl, C7-C10-arylalkyl, C7-C10-alkylaryl, C8-C10-arylalkenyl or a halogen atom,
• x is zero or 1,
• R3 is 4-(C4-C8-alkyl)phenyl, where the 4-(C4-C8-alkyl) group is a branched C4-C8-alkyl group,
• Y4 and Y6 are each a hydrogen atom and Y5 is a hydrogen atom or R3,
• R11 is a bridging group of the formula
• where M2 is carbon, silicon, germanium or tin,
• p is 1, 2 or 3,
• R12 and R13 are identical or different and are each a hydrogen atom, a halogen atom or C1-C20-alkyl, C6-C14-aryl, C1-C10-alkoxy, C2-C10-alkenyl, C7-C20-arylalkyl, C7-C20-alkylaryl, C6-C10-aryloxy, C1-C10-fluoroalkyl, C6-C10-haloaryl or C2-C10-alkynyl or
• R12 and R13 together with the atom connecting them form a ring.

An indene of the formula (V) or (Va)

• where R1 is a linear, branched or cyclic C1-C8-alkyl group which may bear one or more identical or different fluorine or chlorine substituents, a phenyl group which may bear one or more identical or different fluorine or chlorine substituents, a C7-C12-alkylaryl or arylalkyl group, where the alkyl part may bear one or more identical or different fluorine or chlorine substituents and the aryl part may bear one or more identical or different fluorine or chlorine substituents, a C2-C8-alkenyl group or a C2-C8-alkynyl group, a C8-C12-arylalkenyl group which may bear one or more identical or different fluorine or chlorine substituents, or R1 is an OR2, SiR23 or —OSiR23 group, where R2 are identical or different and are each a C1-C4-alkyl group or phenyl group or R1 is a C1-C16-heterocyclic group, where the heteroatoms are oxygen, nitrogen, sulfur or silicon and the group may in turn bear C1-C10-radicals or heteroatoms as substituents, titanium, zirconium, hafnium,
• R3 is 4-(C4-C8-alkyl)phenyl, where the 4-(C4-C8-alkyl) group is a branched C4-C8-alkyl group,
• Y4 and Y6 are each a hydrogen atom and
• Y5 is a hydrogen atom or R3.