- Energetic C-trinitromethyl-substituted pyrazoles: Synthesis and characterization
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A new family of C-trinitromethyl-substituted pyrazoles was designed and obtained in good yields by the reaction of N2O4 with the pyrazolecarbaldehyde oxime followed by further N-nitration and C-nitration. All of the new compounds were fully characterized by IR and NMR spectroscopy, elemental analysis and differential scanning calorimetry (DSC). Compounds 2 and 3 were further confirmed by X-ray crystallography. These pyrazole derivatives have good densities, positive enthalpies of formation and acceptable sensitivity values. Theoretical calculations carried out using Gaussian 03 and EXPLO5 program demonstrate good to excellent detonation velocities and pressures in the range of ADN and HMX. Compound 3 exhibiting a positive oxygen balance, high specific impulse and moderate thermal stability is a promising high energy density oxidizer.
- Zhang, Yiying,Li, Yanan,Hu, Jianjian,Ge, Zhongxue,Sun, Chenghui,Pang, Siping
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- 1-nitro-3-trinitro methyl pyrazol compound
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The invention discloses a 1-nitro-3-trinitro methyl pyrazol compound. A structural formula of the 1-nitro-3-trinitro methyl pyrazol compound is as shown in a formula (I): (shown in the specification).The 1-nitro-3-trinitro methyl pyrazol compound is mainly used in the field of energetic materials.
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Paragraph 0020; 0021; 0022; 0039; 0040; 0041
(2019/02/04)
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- 3-trinitromethylpyrazole compound
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The invention discloses a 3-trinitromethylpyrazole compound, which is of a structural formula as shown by a formula (I) as shown in the following descriptions. The 3-trinitromethylpyrazole compound ismainly used in the field of energetic materials.
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Paragraph 0008; 0020-0024; 0028; 0040-0044; 0048
(2019/02/04)
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- 3-heliacal dinomethyl-5-nitropyrazole hydrazine salt compound
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The invention discloses a 3-heliacal dinomethyl-5-nitropyrazole hydrazine salt compound. A structural formula of the compound is shown as (I). The compound is mainly used in the field of explosives.
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Paragraph 0022-0030; 0050-0058
(2019/04/02)
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- Copper(ii)-promoted direct conversion of methylarenes into aromatic oximes
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A simple and efficient catalytic system for direct conversion of methylarenes into aromatic oximes has been developed, with Cu(OAc)2 as catalyst, NHPI (N-Hydroxyphthalimide) as additive, TBN (tert-butyl nitrite) as both the nitrogen source and the oxidant. This process proceeds under mild conditions, tolerates a wide range of substrates, affording the targeted aromatic oximes in 63-86% yields.
- Yu, Jiatao,Lu, Ming
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supporting information
p. 7397 - 7401
(2015/07/15)
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- Copper(II)-promoted direct conversion of methylarenes into aromatic oximes
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A simple and efficient catalytic system for direct conversion of methylarenes into aromatic oximes has been developed, with Cu(OAc)2 as catalyst, NHPI (N-Hydroxyphthalimide) as additive, TBN (tert-butyl nitrite) as both the nitrogen source and the oxidant. This process proceeds under mild conditions, tolerates a wide range of substrates, affording the targeted aromatic oximes in 63-86% yields.
- Yu, Jiatao,Lu, Ming
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supporting information
p. 7397 - 7401
(2015/11/27)
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- MALONONITRILE COMPOUND AND USE THEREOF
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A nitrile compound shown by the formula (1) has an excel lent pesticidal activity and it is useful as an active ingredient of pesticide.
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Page/Page column 46
(2008/06/13)
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