Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-11-03
2008-08-19
Morris, Patricia L (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C546S286000, C546S316000
Reexamination Certificate
active
07414136
ABSTRACT:
To provide a method for producing a 3-substituted 2-chloro-5-fluoro-pyridine or its salt in high yield from a readily available material through a short process under mild reaction conditions using a reagent which is easy for handling and simple in the reaction operation. Namely, a method for producing the following compound (2) or its salt which comprises selectively reducing a chlorine atom at the 6-position of the following compound (1) or its salt, is provided. Further, a method for producing the following compound (4) or its salt which comprises substituting a Z1group of the following compound (2) or its salt obtained by the reduction reaction, by a Z2group, is provided. Here, Z1is —CO2R1, etc., and R1is a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an aralkyl group or a cycloalkyl group. Z2is a group different from Z1and is —CO2R5, etc., and R5is an alkyl group, an alkenyl group, an aryl group, an aralkyl group or a cycloalkyl group.
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Matsumura Yasushi
Mori Nobuaki
Yamada Yasuhiro
Asahi Glass Company Limited
Morris Patricia L
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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