IMPROVED PROCESS FOR PREPARING A STATIN PRECURSOR
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Mar 24, 2016
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Mar 26, 2015
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Abstract
The present invention relates to a process comprising reacting p-fluorobenzaldehyde, 4-methyl-3-oxopentanenitrile and urea in a first reaction mixture comprising a first organic solvent, thereby obtaining an intermediate mixture comprising an oxo-pyrimidine-carbonitrile; and oxidizing the oxo-pyrimidine-carbonitrile by contacting the intermediate mixture or organic extract with an organic hydroperoxide, thereby obtaining a hydroxyl-pyrimidine carbonitrile.
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