Preparation of substituted indenes

Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By ring formation from nonring moiety – e.g. – aromatization,...

Reexamination Certificate

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C585S415000, C585S400000, C585S435000, C585S436000

Reexamination Certificate

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10532284

ABSTRACT:
The present invention relates to a simple process for preparing specifically substituted indenes of the formula (I) or (Ia)to compounds of the formula (II) serving as starting materialsand to the use of the compounds of the formula (II) as starting materials for the synthesis of substituted indenes.

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patent: WO-98/40331 (1998-09-01), None
Holm, Torkil, “Thermochemical Bond Dissociation Energies of Carbon-Magnesium Bonds”, J. Chem.Soc. Perkin Trans.2, 1981, pp. 464-467.
Ikoma, Yoshiharu et al., “Non-ligated Nickel Chloride-Catalyzed Cross-Coupling of Aromatic Grignard Reagents with Aryl Halides”, Synthesis 1990, pp. 147-148.
Ellis, William W. et al., “Synthesis, Structure, and Properties of Chiral Titanium and Zirconium Complexes Bearing Biaryl Strapped Substituted Cyclopentadienyl Ligands”, Organometallics 1993, vol. 12, pp. 4391-4401.
Witte, Peter et al., “Synthesis of Unbridged Bis(2-R-indenyl)zirconocenes Containing Functional Groups and Investigations in Propylene Polymerization”, Organometallics 1999, vol. 18, pp. 4147-4155.
Beilstein Online, Registry No. 6314119, BE618638, XP002270402, 1994 and 1962, respectivley.

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