Process for producing 2-(phenyl methyl thio)-3-pyridine carboxylic acid
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United States of America Patent
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Jun 29, 2010
Grant Date -
Jun 12, 2008
app pub date -
Jun 17, 2004
filing date -
Apr 12, 2004
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Abstract
The invention discloses an improved process for producing an intermediate to produce large quantity of 2-(Phenyl methyl thio)-3-pyridine carboxylic acid. The process comprises reacting 2-chloro-3-cyanopyridine with benzyl mercaptan in presence of a base and an aprotic solvent. The resulting intermediate 2-(phenyl methyl thio)-3-cyanopyridine is hydrolyzed in presence of a base in an autoclave and isolated under acidic condition to get the desired product.
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