期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 80, 期 14, 页码 7226-7234出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.5b01227
关键词
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资金
- Universita dell'Insubria
- Ministero dell'Universita e della Ricerca [PRIN 2012C5YJSK_001]
A highly effective synthesis of haloalkylidene-substituted heterocycles by copper(II)-catalyzed cyclization of alkynyl ureas and secondary amides has been developed. The reaction, which involves a catalytic amount of CuCl2 and a stoichiometric amount of N-halosuccinimide, occurs selectively through an alkoxyhalogenation process. Alternatively, alkoxychlorination and alkoxybromination reactions can be performed working solely with stoichiometric CuCl, and CuBr2, respectively.
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