1
Jurgen Rohrmann, Frank Kuber: Process for the preparation of substituted indenes and their use as ligand systems for metallocene catalysts. Targor, Connolly & Hutz, July 27, 1999: US05929264 (27 worldwide citation)

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 t ...


2
Jurgen Rohrmann, Frank Kuber: Process for the preparation of substituted indenes and their use as ligand systems for metallocene catalysts. Targor, Connolly & Hutz, November 24, 1998: US05840948 (25 worldwide citation)

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 t ...


3
Rohrmann Jurgen, Kuber Frank: Procede dobtention dindenes substituees, et leur emploi comme systemes de ligands pour catalyseurs du type metallocene, Process for the preparation of substituted indenes and their use as ligand systems for metallocene catalysts. Hoechst Aktiengesellschaft, Basell Polyolefine, BERESKIN & PARR, June 22, 2004: CA2084016 (13 worldwide citation)

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, ...