SYNTHESIS OF 2-AMINO-SUBSTITUTED 4-OXO-4H-CHROMEN-8.YL-TRIFLUORO-METHANESULFONIC ACID ESTERS
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United States of America Patent
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Issued Date -
Dec 31, 2009
app pub date -
Jul 18, 2007
filing date -
Jul 18, 2006
priority date (Note) -
Abandoned
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Abstract
aryl group, or may together form, along with the nitrogen atom to which they are attached, an optionally substituted heterocyclic ring having from 4 to 8 ring atoms; from a compound of formula (III): comprising the steps of: (a) removing the allyl group from the compound of formula (III) with appropriate reaction conditions to yield a compound of formula (II): and (b) reacting the compound of formula (II) with a triflating agent to yield a compound of formula (I).
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