Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2007-07-20
2011-12-06
Zucker, Paul A (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C562S538000, C568S043000
Reexamination Certificate
active
08071805
ABSTRACT:
A process for producing a 2-hydroxy-4-(methylthio)butyrate compound represented by the formula (2):wherein A is a hydrogen atom or a group represented by R—CH2—, wherein R is a hydrogen atom or an alkyl group, which comprises the step of:reacting 4-(methylthio)-2-oxo-1-butanol with oxygen and a compound represented by the formula (1):in-line-formulae description="In-line Formulae" end="lead"?A-OH (1)in-line-formulae description="In-line Formulae" end="tail"?wherein A is as defined above, in the presence of a copper compound.
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Sumitomo Chemical Company Limited
Wenderoth , Lind & Ponack, L.L.P.
Zucker Paul A
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