Intermolecular C(sp
<sup>3</sup>
)−H Amination Promoted by Internal Oxidants: Synthesis of Trifluoroacetylated Hydrazones
作者:Chuanle Zhu、Hao Zeng、Fulin Chen、Zhiyi Yang、Yingying Cai、Huanfeng Jiang
DOI:10.1002/anie.201810502
日期:2018.12.21
An intermolecular C(sp3)−H amination reaction is reported that is promoted by internal oxidants and occurs via a C=N bond formation step. This intermolecular C(sp3)−H amination reaction of trifluoromethyl ketones and aryldiazonium tetrafluoroborates affords various valuable trifluoroacetylated hydrazones in high yields with excellent E/Z selectivities. The salient features of this reaction type is
据报道分子间的C(sp 3)-H胺化反应由内部氧化剂促进,并通过C = N键形成步骤发生。三氟甲基酮与四氟硼酸芳基重氮的分子间C(sp 3)-H胺化反应可高产率提供各种有价值的三氟乙酰化,并具有出色的E / Z选择性。该反应类型的显着特征是它不含金属,催化剂,导向基团和叠氮化物,并且可以在温和条件下进行,操作简单,有效,可克缩放,并且可以耐受各种官能团。值得注意的是,使用我们的方法可以在克级上顺利合成外寄生物控制剂。四氟硼酸芳基重氮用作胺化试剂以及内部氧化剂。