Method of Synthesis of Arylsulfur Trifluorides and Use as in situ Deoxofluorination Reagent
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United States of America Patent
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Issued Date -
Apr 5, 2012
app pub date -
Sep 30, 2011
filing date -
Oct 1, 2010
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Abandoned
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Abstract
The invention is a method of synthesizing Arylsulfur Trifluorides, such as Fluolead, by reacting BR2 and KF (or suitable alkali metal fluoride) in acetonitrile (or other suitable solvent). The invention also comprises using the Fluolead (or its substitutes), thus prepared, in situ as deoxofluorination reagents with a suitable aldehyde, ketone, or alcohol such as one selected from the group consisting of benzaldehyde Benzaldehyde, p-Bromobenzaldehyde, p-Tolualdehyde, Acetophenone, 2-Butanone, or Isobutyraldehyde, wherein the mixture is heated to reflux until completion. The respective products are then isolated after extraction by hexane and destruction of the sulfinyl fluoride co-product.
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