Process for making 2-aryl benz (ox, thi, imid) azoles and 2-aminoaryl aminobenz (ox, thi, imid) azoles
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United States of America Patent
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Apr 24, 2001
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app pub date -
Jun 10, 1996
filing date -
Mar 20, 1995
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Abstract
2-(aryl)-benz(ox, thi, imid)azoles are prepared by reacting an aromatic aldehyde with hydroxylamine to form an aromatic aldehyde oxime, halogenating the oxime to form an aromatic hydroxamoyl halide, and then reacting this halide with certain aromatic amine compounds. The products may be nitrated and then reduced to form the corresponding diamines, which are useful in making PIBX polymers.
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