期刊
ORGANIC CHEMISTRY FRONTIERS
卷 6, 期 2, 页码 249-255出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8qo01173g
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资金
- Russian Science Foundation [14-13-01153, 16-13-10404]
- Russian Science Foundation [16-13-10404] Funding Source: Russian Science Foundation
Although desirable from an energetic materials chemistry perspective, nitroazoles bearing oxygen-rich explosophoric units at a nitrogen atom of the ring are a highly challenging target using current literature approaches. In this paper, we report the first simple two-step protocol to efficiently prepare unprecedented N-(2-fluoro-2,2,-dinitroethyl) derivatives of imidazoles, pyrazoles, triazoles, and tetrazoles. Michael addition of NH-azoles to 1,1-dinitroethene, generated from 1,1,1-trinitroethane, followed by fluorination provides the N-dinitrofluoroethylated nitrogen heterocycles in moderate to good overall yields. The syntheses employ azoles with electron-withdrawing groups, predominantly, the nitro group, and can be extended to other structurally attractive electron-deficient NH-heterocycles.
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