... (8) Dean, FM Adu. Heterocycl. Chem. 1982, 31, 237. 0 1988 American Chemical Society Page 2. 2100 J. Org. Chem., Vol. 53, No. 9, 1988 Notes Table I. Approximate Half-Lives for the TFA-Catalyzed Decarboxylation of 5-Substituted-2-furoic Acids 10 mol W TFA. ...