Naphthalene substituted in the 2- or .beta.-position with an electron-donating substituent can be acylated with high regioselectivity in the 6-position by using an acylating agent in substantially anhydrous hydrogen fluoride which functions both as catalyst and solvent.
在2-或β-位置用电子供体取代的
萘可以通过在几乎无
水的
氢氟酸中使用酰化试剂进行酰化反应,该
氢氟酸既作为催化剂又作为溶剂,具有高度的区域选择性,可以在6-位置上进行酰化。