Anisole, resorcinol dimethyl ether. p.methylanisole, and β-methoxynaphthalene undergo regiospecific trifluoroacetylation in neat trifluoroacetic anhydride (TFAA) at 100 °C in the presence of 0.1 eq. CoCl2 as catalyst: with a 1:1 ratio, only paradimerization of anisole is observed.
苯甲醚,
间苯二酚二
甲醚。对甲基
苯甲醚和β-甲氧基
萘在纯的
三氟乙酸酐(
TFAA)中于0.1 eq。存在下于100°C进行区域特异性三
氟乙酰化。CoCl 2作为催化剂:比率为1:1 ,仅观察到
苯甲醚的对二聚。