Preparation of partially hydrogenated rac-ansa-metallocene...

Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C534S015000, C556S012000, C556S028000, C556S043000, C556S053000, C556S058000, C502S103000, C526S943000

Reexamination Certificate

active

07619106

ABSTRACT:
The invention relates to a process for preparing hydrogenated or partially hydrogenated, racemic ansa-metallocene complexes by reacting bridged or unbridged transition metal complexes with alkali metal compounds or alkaline earth metal compounds, heating the resulting reaction mixture to a temperature in the range from −78 to 250° C. and at least partially hydrogenating the reaction products in the presence of a suitable catalyst, to the corresponding hydrogenated or partially hydrogenated metallocenes and to their use as catalysts or as a constituent of catalysts for the polymerization of olefinically unsaturated compounds or as reagents or catalysts in stereoselective synthesis.

REFERENCES:
patent: 4769510 (1988-09-01), Kaminsky et al.
patent: 5304614 (1994-04-01), Winter et al.
patent: 5442119 (1995-08-01), Buchwald et al.
patent: 5883275 (1999-03-01), Bingel et al.
patent: RE37208 (2001-06-01), Winter et al.
patent: 6262286 (2001-07-01), Gregorius et al.
patent: 6992204 (2006-01-01), Damrau et al.
patent: RE39532 (2007-03-01), Winter et al.
patent: 7193099 (2007-03-01), Damrau et al.
patent: RE39561 (2007-04-01), Winter et al.
patent: 2004/0010157 (2004-01-01), Damrau et al.
patent: 2005/0182266 (2005-08-01), Schulte et al.
patent: 2006/0154804 (2006-07-01), Schottek et al.
patent: 100 30 638 (2002-01-01), None
patent: 0 185 918 (1986-07-01), None
patent: 0 344 887 (1989-12-01), None
patent: 0 537 686 (1993-04-01), None
patent: 0 581 754 (1994-02-01), None
patent: 0 643 079 (1995-03-01), None
patent: 0 700 935 (1996-03-01), None
patent: 0 839 822 (1998-05-01), None
patent: 07-41521 (1995-02-01), None
patent: 07-292019 (1995-11-01), None
patent: WO-92/09545 (1992-06-01), None
patent: WO-99/15538 (1999-04-01), None
patent: WO-02/00672 (2002-01-01), None
Rheingold, A. L. et al, “Preparation and Properties of Chiral Titanocene and Zirconocene Dichloride Complexes of a Chiral Ligand”, Organometallics (1992), vol. 11, pp. 1869-1876.
Schupfner, G. et al., “Microstructure Of Polypropene Samples Produced With Different Homogeneous Bridged Indenyl Zirconium Catalysts. Clues on The Structure And Reactivity Relation”, Journal of Molecular Catalysis A: Chemical 102 (1995), pp. 59-65.
Habaue, S. et al., “Polymerization And Asymmetric Oligomerization Of Allylsilanes Using Chiral Ethylenebis(4,5,6,7-tetrahydro-1-indenyl)zirconium and -hafnium Complexes”, Macromol. Chem. Phys. (1998), vol. 199, pp. 2211-2215.
Polo, E. et al., “Ethene/propene Copolymerisations Withrac-EBTHIZrR2/alumoxane: α-ligands Effect”, Journal of Molecular Catalysis A: Chemical 160 (2000), pp. 229-236.
Schmidt, K. et al., “Photochemical Isomerization of Me2Si-Bridged Zirconocene Complexes. Application to Stereoselective Syntheses ofansa-Zirconocene binaphtholate Stereoisomers”, Organometallics (1997), vol. 16, pp. 1724-1728.
Busico, V. et al., “Propene Polymerication Promoted by C2-symmetric Metallocene Catalysts: From Atactic to Isotactic Polypropene in Consequence of an Isotope Effect”, J. Am. Chem. Soc. (1996), vol. 118, pp. 2105-2106.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Preparation of partially hydrogenated rac-ansa-metallocene... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of partially hydrogenated rac-ansa-metallocene..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of partially hydrogenated rac-ansa-metallocene... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4070607

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.