palladium-catalyzed C7-acetoxylation of indolines with a range of amide directing groups. While a variety of substituents are tolerated on the indoline-core and the N1-acyl group, the acetoxylation is most sensitive to the C2- and C6-indoline substituents. The practicality of this indoline C7-acetoxylation is demonstrated using a cinnamamide substrate on a mmol scale. Several N1-acyl groups, including those present in
我们描述了具有一系列酰胺导向基团的二氢
吲哚的
钯催化 C7-乙酰氧基化。虽然在二氢
吲哚核心和 N1-酰基上可以接受多种取代基,但乙酰氧基化对 C2- 和 C6- 二氢
吲哚取代基最为敏感。这种二氢
吲哚 C7-乙酰氧基化的实用性在 mmol 规模上使用肉桂酰胺底物得到证明。几个 N1-酰基,包括存在于天然
生物碱中的那些,引导二氢
吲哚底物的 C7-乙酰氧基化超过竞争性 C5-氧化。该
化学的应用允许通过N-苯甲酰芬得啶的后期 C17-乙酰氧基化首次合成N-苯甲酰环二氢肉碱。