Divalent lanthanide reduction catalysts
AssigneeThe Regents of the University of California
InventorsWilliam J. Evans, Nathan T. Allen
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Abstract
The present invention relates generally to the chemistry of inorganic reduction catalysts, and more particularly to the composition and use of dihalogenated lanthanides catalysts, for example TmI2 or DyI2, to facilitate reduction reactions such as the preparation of alkylated hydrocarbons and/or organic polymers.
Claims63
A method of reducing a compound to form a reduction product, said method comprising the step of combining the compound with a lanthanide catalyst having the formula:
- G1—M—G2
- wherein;
- M is either a Dysprosium or a Neodymium;
- G1 and G2 are chemical entities independently selected from the group consisting of a halogen, an alkyl, an aryl, an NR2, an OR2, a PR2 and an SR;
- wherein N is a nitrogen, O is an oxygen, P is a phosphorus and R is selected from the group consisting of an alkyl, an aryl, and a cycloalkyl from about 1 to about 20 carbon atoms.
A polymeric reduction product made from a process comprising the step of combining a compound which comprises a polymerizable unit with a lanthanide catalyst having the general Formula A:
- G1—M—G2
- wherein;
- L is a lanthanide other than the Europium, Ytterbium or Samarium;
- G1 and G2 are chemical entities independently selected from the group consisting of a halogen, an alkyl, an aryl, an NR2, an OR2, a PR2 and an SR;
- wherein N is a nitrogen, O is an oxygen, P is a phosphorus and R is selected from the group consisting of an alkyl, an aryl, and a cycloalkyl from about 1 to about 20 carbon atoms.
A method for making a dihalogenated lanthanide compound, said method comprising the steps of:
- combining a Dysprosium metal with a halogen;
- reacting the Dysprosium metal with the halogen to form an initial mixture;
- and
- heating the initial mixture for about 1 to about 60 minutes.
A method of reducing a compound to form a pollmeric reduction product, said method comprising the step of combining the compound which comprises a polymerizable unit with a lanthanide catalyst having the formula:
- G1—M—G2
- wherein;
- M is a lanthanide other than the Europium, Ytterbium or Samarium;
- G1 and G2 are chemical entities independently selected from the group consisting of a halogen, an alkyl, an aryl, an NR2, an OR2, a PR2 and an SR;
- wherein N is a nitrogen, O is an oxygen, P is a phosphorus and R is selected from the group consisting of an alkyl, an aryl, and a cycloalkyl from about 1 to about 20 carbon atoms.
Dependencies are inferred from the claim text.