Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2007-05-22
2007-05-22
Parsa, J. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C546S304000
Reexamination Certificate
active
11209919
ABSTRACT:
A method for preparing 2-aminopyridine derivatives, which comprises substituting of fluorine for hydrazine moiety and reducing with hydrogen using 3-substituted-2,5,6-trifluoropyridine as a starting material, provides 2-aminopyridine derivatives having a purity over 98% under a mild reaction condition.
REFERENCES:
Banks et al., N-Halo compounds, Journal of Chemical Society, Perkin Transaction I, 817-821 (1980).
Lee Sang-Ho
Park Tae-Ho
Zhao Long-Xuan
Anderson Kill & Olick PC
Korea Research Institute of Chemical Technology
Parsa J.
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