Process for the preparation of substituted indenes and their...

Details Process for the preparation of substituted indenes and their... Process for the preparation of substituted indenes and their...

C - Chemistry, Metallurgy

07

F

C07F 7/00 (2006.01) C07C 13/465 (2006.01) C07C 13/547 (2006.01) C07C 25/22 (2006.01) C07C 43/21 (2006.01) C07C 45/46 (2006.01) C07C 45/67 (2006.01) C07C 49/665 (2006.01) C07C 49/67 (2006.01) C07C 49/675 (2006.01) C07D 213/16 (2006.01) C07D 307/36 (2006.01) C07D 333/08 (2006.01) C07F 7/08 (2006.01) C07F 9/00 (2006.01) C07F 17/00 (2006.01) C08F 4/72 (2006.01) C08F 4/76 (2006.01) C08F 10/00 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01) C08F 4/659 (2006.01) C08F 110/06 (2006.01)

Patent

CA 2084016

The invention relates to a process for the preparation of a compound of the formula IV or IVa (see formula IV and IVa) in which R1-R5 are preferably hydrogen or alkyl, which comprises reacting a compound I (see formula I) with a compound II (see formula II) in which X1 and X2 are preferably halogen, to give the corresponding indanones, which are converted into the compounds IV and IVa by reduction and dehydra- tion. The compounds IV and IVa are important intermediate products for the preparation of chiral metallocene complexes which are suitable catalyst components for olefin polymerization.

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