J. Ruiz et al., COCL2 CATALYZED TRIFLUOROACETYLATION VERSUS DIMERIZATION OF METHOXYAROMATICS USING TRIFLUOROACETIC-ANHYDRIDE, Tetrahedron letters, 37(26), 1996, pp. 4511-4514
Anisole, resorcinol dimethyl ether, p.methylanisole, and beta-methoxyn
aphthalene undergo regiospecific trifluoroacetylation in neat trifluor
oacetic anhydride (TFAA) at 100 degrees C in the presence of 0.1 eq. C
oCl2 as catalyst: with a 1:1 anisole/TFAA ratio, only paradimerization
of anisole is observed. Copyright (C) 1996 Elsevier Science Ltd