Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Reexamination Certificate
2006-06-20
2006-06-20
Nazario-Gonzalez, Porfirio (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C585S361000
Reexamination Certificate
active
07064225
ABSTRACT:
The present invention provides a method of making compounds comprising linked cyclopentadienyl and fluorenyl groups, including substituted analogs thereof, which are precursors to ansa-metallocenes comprising bridged cyclopentadienyl and fluorenyl ligands. In one aspect, this invention provides a preparative method for (5-cyclopentadienyl)[5-(2,7-di-tert-butylfluorenyl)]hex-1-ene, and ansa-metallocenes comprising this ligand.
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Martin Joel L.
Masino Albert P.
Thorn Matthew G.
Yang Qing
Chevron Phillips Chemical Company, L.P.
Nazario-Gonzalez Porfirio
Womble Carlyle Sandridge & Rice PLLC
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