The use of titanium(IV) chloride as a Lewis acid for direct ortho-acylation of phenols and naphthols proves to be a convenient, more general and direct route to various hydroxyaryl ketones. The route is regioselective, leading to ortho C-acylated products in satisfactory to high yields in most cases.
使用
四氯化钛作为
路易斯酸,进行
酚和
萘酚的直接邻位酰基化反应,被证明是一种方便、更普遍且直接的途径,可用于制备各种羟基芳基酮。该路线具有区域选择性,在大多数情况下能够产生令人满意的至高产率的邻位C-酰基化产物。