Direct conversion of phenols into amides and esters of benzoic acid
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United States of America Patent
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Apr 2, 2013
Grant Date -
Sep 29, 2011
app pub date -
Mar 22, 2011
filing date -
Mar 23, 2010
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Abstract
A method is provided for the preparation of an aromatic carboxylic acid aryl ester or an N-aryl aromatic carboxamide. The method comprises contacting an O,O-diaryl thiocarbonate or an O-aryl-N-aryl thiocarbamate with a reactant that regioselectively reacts with sulfur, which contact causes an O-neophyl rearrangement, thereby forming either the aromatic carboxylic acid aryl ester or the N-aryl aromatic carboxamide, respectively.
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