Trifluoroacetic acid-mediated hydroarylation: synthesis of dihydrocoumarins and dihydroquinolones.
[reaction: see text] Trifluoroacetic acid mediates the hydroarylation of alkenes to afford dihydrocoumarins and dihydroquinolones in good yield. Intermolecular hydroarylation of cinnamic acids by phenols is particularly facile, which leads to the conclusion that previous reports of palladium-catalyzed hydroarylation of cinnamic acids in trifluoroacetic acid are erroneous.
Li
Kelin
K
Department of Chemistry, 1251 Wescoe Hall Drive, 2010 Malott Hall, University of Kansas, Lawrence, Kansas 66045-7582, USA.
Foresee
Lindsay N
LN
Tunge
Jon A
JA
D003374:Coumarins / Q000138:chemical synthesis* / Q000737:chemistry; D015363:Quinolones / Q000138:chemical synthesis* / Q000737:chemistry; D014269:Trifluoroacetic Acid / Q000737:chemistry*
D003374:Coumarins; D015363:Quinolones; D014269:Trifluoroacetic Acid