The first copper‐catalyzed intramolecular C(sp3)H and C(sp2)H oxidative amidation has been developed. Using a Cu(OAc)2 catalyst and an Ag2CO3 oxidant in dichloroethane solvent, C(sp3)H amidation proceeded at a terminal methyl group, as well as at the internal benzylic position of an alkyl chain. This reaction has a broad substrate scope, and various β‐lactams were obtained in excellent yield, even
第一铜催化的分子内C(SP 3) H和(SPç 2) ħ氧化酰胺化得到了发展。在二氯乙烷溶剂中使用Cu(OAc)2催化剂和Ag 2 CO 3氧化剂,在末端甲基以及烷基链的内部苄基位置处进行C(SP 3)H酰胺化反应。该反应具有广泛的底物范围,即使以克为单位,也能以优异的收率获得各种β-内酰胺。在O 2下使用CuCl 2和Ag 2 CO 3但是,在二甲基亚砜中的空气会通过C(SP 2)H酰胺化选择性地生成2-吲哚酮。动力学同位素效应(KIE)的研究表明,Ç H键活化是速率决定步骤。可以通过氧化除去5-甲氧基喹啉基。
Cobalt catalyzed carbonylation of unactivated C(sp<sup>3</sup>)–H bonds
A general efficient regioselective cobaltcatalyzedcarbonylation of unactivated C(sp3)–H bonds of aliphatic amides was demonstrated using atmospheric (1–2 atm) carbon monoxide as a C1 source. This straightforward approach provides access to α-spiral succinimide regioselectively in a good yield. Cobaltcatalyzed sp3 C–H bond carbonylation is reported for the first time including the functionalization