描述了一种用于C(sp 3)-H键的分子间胺化的通用且操作方便的方法。这项技术可以使复杂的分子有效地功能化,包括众多的药物靶标。新戊腈作为溶剂,Al 2 O 3作为添加剂和氨基磺酸苯酯作为氮源的组合提供了不同的反应性能和底物范围。机理数据强烈暗示了由溶剂氧化引发的催化剂分解途径,从而为新戊腈对该反应过程的显着影响提供了理论依据。
Chemoselective Tertiary C−H Hydroxylation for Late‐Stage Functionalization with Mn(PDP)/Chloroacetic Acid Catalysis
作者:Rachel K. Chambers、Jinpeng Zhao、Connor P. Delaney、M. Christina White
DOI:10.1002/adsc.201901472
日期:2020.1.23
oxidizing remote tertiary C(sp3)-Hbonds in the presence of a broad range of aromatic and heterocyclic moieties. Although catalyst loadings can be lowered to 0.1 mol% under a Mn(PDP)/acetic acid system for aromatic and non-basic nitrogen heterocycle substrates, the Mn(PDP)/chloroacetic acid system generally affords 10-15% higher isolated yields on these substrates and is uniquely effective for remote C(sp
Selective Intermolecular Amination of CH Bonds at Tertiary Carbon Centers
作者:Jennifer L. Roizen、David N. Zalatan、J. Du Bois
DOI:10.1002/anie.201304238
日期:2013.10.18
C–H insertion: A method for intermolecularamination of tertiaryCHbonds is described that uses limiting amounts of substrate and a convenient phenol‐derived nitrogen source. Structure‐selectivity and mechanistic studies suggest that steric interaction between the substrate and active oxidant is the principal determinant of product selectivity.