Selective amination of polyhalopyridines catalyzed by a palladium-xantphos complex
Selective amination of polyhalopyridines catalyzed by a palladium-xantphos complex
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DOI:
10.1021/ol0357696
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发表时间:
2003-11-27
期刊:
影响因子:
5.2
通讯作者:
Bunnelle, WH
中科院分区:
文献类型:
--
作者:
Ji, JG;Li, T;Bunnelle, WH
Amination of 5-bromo-2-chloropyridine (1a) catalyzed by a palladium-Xantphos complex predominately gives 5-amino-2-chloropyridine product 3a in 96% isolated yield and excellent chemoselectivity (3a/4a = 97:3). Amination of 2,5-dibromopyridine (11) under the same conditions exclusively affords 2-amino-5-bromopyridine 4a.