Abstract
A tetrabutylammonium bromide catalyzed trifluoromethylation/cyclization reaction of o-aralkynylaryl aldehydes with trimethyl(trifluoromethyl)silane and cesium fluoride has been developed. A variety of 1-alkylidene-3-(trifluoromethyl)phthalans were prepared in moderate to excellent yields by tandem nucleophilic addition and cyclization.
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