Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By addition of entire unsaturated molecules – e.g.,...
Reexamination Certificate
2006-09-05
2006-09-05
Nazario-Gonzalez, Porfirio (Department: 1621)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By addition of entire unsaturated molecules, e.g.,...
C585S514000, C585S653000, C556S021000, C556S136000, C526S090000, C526S092000, C526S160000, C526S171000
Reexamination Certificate
active
07102047
ABSTRACT:
Ruthenium and osmium carbene compounds that are stable in the presence of a variety of functional groups and can be used to catalyze olefin metathesis reactions on unstrained cyclic and acyclic olefins are disclosed. Also disclosed are methods of making the carbene compounds. The carbene compounds are of the formulawhere M is Os or Ru; R1is hydrogen; R is selected from the group consisting of hydrogen, substituted or unsubstituted alkyl, and substituted or unsubstituted aryl; X and X1are independently selected from any anionic ligand; and L and L1are independently selected from any neutral electron donor. The ruthenium and osmium carbene compounds of the present invention may be synthesized using diazo compounds, by neutral electron donor ligand exchange, by cross metathesis, using acetylene, using cumulated olefins, and in a one-pot method using diazo compounds and neutral electron donors. The ruthenium and osmium carbene compounds of the present invention may be used to catalyze olefin metathesis reactions including, but not limited to, ROMP, RCM, depolymerization of unsaturated polymers, synthesis of telechelic polymers, and olefin synthesis.
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Grubbs Robert H.
Nguyen Sonbinh T.
Schwab Peter
California Institute of Technology
Nazario-Gonzalez Porfirio
Reed Intellectual Property Law Group
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