Process for synthesizing 2-sulphanilamido-3-methoxypyrazine
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United States of America Patent
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Nov 10, 1981
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N/A
app pub date -
Jan 22, 1980
filing date -
Jan 22, 1979
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Expired
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Abstract
2-Sulphanilamido-3-methoxypyrazine is produced in high purity and good yield, by reacting 2,3-dichloropyrazine with sulphanilamide in the presence of potassium carbonate, an aprotic solvent such as dimethylformamide and a second solvent such as toluene which is inert toward the reagents and is adapted to remove the water of reaction.
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