Wang H, Wen K, Nurahmat N, Shao Y, Zhang H, Wei C, Li Y, Shen Y, Sun Z. Regioselective chlorination and bromination of unprotected anilines under mild conditions using copper halides in ionic liquids.
Beilstein J Org Chem 2012;
8:744-8. [PMID:
23015822 PMCID:
PMC3388862 DOI:
10.3762/bjoc.8.84]
[Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 05/04/2012] [Indexed: 11/23/2022] Open
Abstract
By using ionic liquids as solvents, the chlorination or bromination of unprotected anilines at the para-position can be achieved in high yields with copper halides under mild conditions, without the need for potentially hazardous operations such as supplementing oxygen or gaseous HCl.
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