Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2008-10-31
2010-02-16
Zucker, Paul A (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C568S820000
Reexamination Certificate
active
07662996
ABSTRACT:
Embodiments in accordance with the present invention provide for forming essentially pure diastereomers of 5/6-substituted norbornene-type monomers. Further, embodiments in accordance with the present invention encompass polymerizing such diastereomers to form addition or ROMP polymers where a desired exo-/endo-ratio of the diastereomers is provided to the polymerization, such ratio designed to provide a desired ratio of endo-/exo-structured repeating units for a resulting polymer to have desired physical or chemical properties.
REFERENCES:
Blanco et al, Tetrahedron, Divergent Synthesis of Two Precursors of 3′-Homo-2′-deoxy- and 2′-Homo-3′-deoxy-Carboxylic Nucleosides, 2002, 58, pp. 8843-8849) in view of Perrier et al (Centre National de Recerche Scientifique, Paris, 1977 1(5), pp. 367-368.
Perrier et al, Centre National de Recerche Scientifique, Paris, 1977 1(5), pp. 367-368.
Belikova et al, Zhurnal Obshchei Kimii, Synthesis of Endo- and Exo-2-methylbicyclo[2.2.1]heptanes. Steric Orientation of the Reaction of Cyclopentadiene With Propylene, 1962, 32, pp. 2942-2951, English abstract only.
International Search Report for International Application No. PCT/US 08/82339 dated Jan. 22, 2009.
Written Opinion of the International Searching Authority for International Application No. PCT/US 08/82339 mailed on Jan. 22, 2009.
Bell Andrew
Fabricius Dietrich
Jablonski Dane
Knapp Brian
Newsome Peter Wyatt
Promerus LLC
Turocy & Watson LLP
Zucker Paul A
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