Huang H, Shi Y, Li H, Li H, Pang A, Yang J. A One-Step Approach to
N-(Hetero)aryl-3,5-dinitropyrazoles from (Hetero)aryl Amines.
Org Lett 2020;
22:5866-5869. [PMID:
32672468 DOI:
10.1021/acs.orglett.0c01960]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Potassium 1,1,3,3-tetranitropropane-1,3-diide (K2TNP) was found to react readily with various (hetero)aryl amines (12 examples) to give corresponding N-(hetero)aryl-3,5-dinitropyrazoles in moderate to excellent yields. The reactions were performed at mild temperature, and most of the reactions completed in less than 4 h. Four potential energetic compounds show high enthalpy of formation, excellent thermal stability, and good sensitivity, with 3-(3,5-dinitropyrazol-1-yl)-1H-1,2,4-triazole (3j) being a potential 2,2',4,4',6,6'-hexanitrostibene (HNS) replacement.
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