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Please login to access the full content or check if you have access via Variation 9: Trifluoroacetic Acid as Condensing Agent

DOI: 10.1055/sos-SD-014-00294

Williams, A. C.; Camp, N.Science of Synthesis, (200314382.

Examples of the reaction of phenols with 3-oxoalkanoates to give 2H-1-benzopyran-2-ones 102 and 103 catalyzed by trifluoroacetic acid are given in Scheme 33.[‌41‌,‌232‌‌234‌]

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