Process for preparing 4-[(1,6-dihydro-6-OXO-2-pyrimidinyl)amino]benzonitrile
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United States of America Patent
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Dec 31, 2013
Grant Date -
Apr 5, 2012
app pub date -
Dec 14, 2011
filing date -
May 26, 2005
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Abstract
This invention relates to a process for preparing 4-[(1,6-dihydro-6-oxo-2-pyrimidinyl)-amino]benzonitrile (I) starting from a 4-oxo-1,6-dihydro-pyrimidinylcarboxylic acid ester (II) or starting from a guanidine derivative which is reacted with an alkoxy-methylene malonic acid ester to an ester (II) which is converted to (I), which reaction sequence may be a one-pot procedure.
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