Ligand‐Free and Reusable Palladium Nanoparticles‐Catalyzed Alkylation of 2‐Alkylazaarenes with Activated Ketones under Neutral Conditions
作者:Naziya Parveen、Alagesan Muthukumar、Govindasamy Sekar
DOI:10.1002/adsc.201900447
日期:2019.9.17
activated carbonyl compounds such as α‐keto amide, isatin, 1,2‐diketone, α‐keto ester, trifluoromethyl ketone, and phenylglyoxal derivatives were examined and most of the compounds underwent the reaction smoothly to provide the corresponding products in moderate to excellent yields. Moreover, chemoselective reactions of α‐keto amides in the presence of simple ketones were achieved. Also, the model reaction
开发了一种温和,有效和稳定的联萘稳定的钯纳米粒子(Pd-BNP)催化2-烷基氮杂芳烃与活化羰基化合物的(sp 3)CH反应。检查了各种活化的羰基化合物,例如α-酮酰胺,靛红,1,2-二酮,α-酮酸酯,三氟甲基酮和苯乙二醛衍生物,大多数化合物顺利进行了反应,以提供中度至优异的相应产物。产量。此外,在简单的酮存在下,实现了α-酮酰胺的化学选择性反应。而且,模型反应扩展到了克级合成,并且一些产物被用于衍生化以形成相应的N分别为氧化物,丙烯酰胺和1,2-二醇。该方案的主要优点是中性反应条件,无需额外的外部配体,并且Pd-BNP催化剂可成功重复使用多达五个循环而不会损失其活性和收率。汞中毒和热过滤试验证实了Pd-BNP催化剂的不均一性。