Pd-Catalyzed C–O Bond Formation Enabling the Synthesis of Congested <i>N</i>,<i>N</i>,<i>O</i>-Trisubstituted Hydroxylamines
作者:Jiaxing Chen、Yongzhuo Xu、Wen Shao、Jianhua Ji、Boqiang Wang、Muyang Yang、Guojiang Mao、Fuhong Xiao、Guo-Jun Deng
DOI:10.1021/acs.orglett.2c02975
日期:2022.11.18
A Pd-catalyzed C–O cross-coupling of O-acyl hydroxylamines and tertiary or secondary alkyl electrophiles was reported without the cleavage of the rather fragile N–O bond. The described strategy provides direct access to congested N,N,O-trisubstituted hydroxylamines bearing an α-quaternary carbon center under mild conditions in high yields and features exclusively chemoselective C–O bond formation,
据报道,Pd 催化的O-酰基羟胺和叔或仲烷基亲电子试剂的 C-O 交叉偶联没有裂解相当脆弱的 N-O 键。所描述的策略提供了在温和条件下以高产率直接获得带有α-季碳中心的拥挤的 N、N、O-三取代羟胺,并具有独特的化学选择性 C-O 键形成、广泛的底物范围和出色的官能团耐受性。交叉偶联的合成潜力是通过药物衍生化和一系列催化后修饰建立的。