Copper and palladium mediated C-H chlorination on 8-acylaminoquinoline scaffolds

被引:78
作者
Guo, Haili [1 ]
Chen, Miaomiao [1 ]
Jiang, Peng [1 ]
Chen, Jian [1 ]
Pan, Lingxia [1 ]
Wang, Min [1 ]
Xie, Chunsong [1 ]
Zhang, Yuhong [2 ]
机构
[1] Hangzhou Normal Univ, Coll Mat Chem & Chem Engn, Hangzhou 310036, Zhejiang, Peoples R China
[2] Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Quinoline; Halogenation; Copper; Palladium; C-H functionalization; OXYCHLORINATION; QUINOLINES; AMINES;
D O I
10.1016/j.tet.2014.11.037
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Depending on the metal complexes employed, regiodivergent C-H direct chlorination on 8-acylaminoquinolines could be realized. While the stoichiometric CuCl2/base persistently gave the C5-monochlorination, the Pd(II)-catalyzed chlorination by using N-chlorosuccinimide (NCS) as a chlorine source led to variable results mainly relying on the substitution pattern of the 8-acylaminoquinolines and the loading of NCS. This work demonstrated not only an unprecedented access to divergently halogenated quinolines, but also a less studied C(sp(2))-H functionalization mode, namely the single-electron transfer (SET) mediated C(sp(2))-H functionalization. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:70 / 76
页数:7
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