Synthesis of 4-amino-3,5-dinitro-1H-pyrazole using vicarious nucleophilic substitution of hydrogen
Synthesis of 4-amino-3,5-dinitro-1H-pyrazole using vicarious nucleophilic substitution of hydrogen
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DOI:
10.1002/jhet.5570380533
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发表时间:
2001-09-01
影响因子:
2.4
通讯作者:
Gilardi, R
中科院分区:
文献类型:
--
作者:
Schmidt, RD;Lee, GS;Gilardi, R
A novel synthesis of the title compound was achieved by direct amination using Vicarious Nucleophilic Substitution (VNS) methodology. Reaction of 1,1,1-trimethylhydrazinium iodide with 3,5-dinitropyrazole in DMSO produces 4-amino-3,5-dinitro-1H-pyrazole as a 1:1 crystal solvate with DMSO. Recrystallization from water yields the monohydrated crystal. Recrystallization of the monohydrate from butyl acetate yields the compound in pure form.