Process for the preparation of substituted indenes and their use

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

1995-06-05

1998-11-24

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556 12, 556 28, 556 43, 556 53, 556 54, 556 56, 502103, 502117, 526943, 585532, C07F 1700, C07F 700, C07C 202

Patent

active

058409483

ABSTRACT:
The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R.sup.1 -R.sup.5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II ##STR3## in which X.sup.1 and X.sup.2 are preferably halogen, to give the corresponding indanones, which are converted into the compounds IV and IVa by reduction and dehydration. 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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