Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-05-31
2005-05-31
Richter, Johann (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C548S543000
Reexamination Certificate
active
06900337
ABSTRACT:
This invention relates to a process for producing 5-methyl-1-R-2-pyrrolidone or 5-methyl-2-pyrrolidone, wherein R is a hydrocarbyl or substituted hydrocarbyl, by reductive amination of levulinic acid utilizing a metal catalyst, which may be optionally supported.
REFERENCES:
patent: 6743819 (2004-06-01), Manzer
patent: 1036694 (1966-07-01), None
Herkes Frank E.
Manzer Leo Ernest
E. I. du Pont de Nemours and Company
Richter Johann
Sackey Ebenezer
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