共查询到19条相似文献,搜索用时 140 毫秒
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3,4-双(4'-硝基呋咱-3'-基)氧化呋咱合成、表征与性能研究 总被引:1,自引:0,他引:1
采用丙二腈为原料,经亚硝化、重排、肟化、脱水环化、分子间缩合环化以及氧化等反应合成含能化合物3,4-双(4'-硝基呋咱-3'-基)氧化呋咱(DNTF),总收率为43%,并采用红外光谱、核磁共振光谱、INADEQUATE谱、质谱和元素分析等进行了结构表征.开展了DNTF物化与爆轰性能研究,其密度1.937 g/cm3,熔点109~110℃,爆速8930 m/s(ρ=1.870 g/cm3),摩擦感度44%~60%(90°摆角),撞击感度80%~96%(10 kg,25 cm),特性落高H50为38.9 cm(5 kg),爆发点315~340℃,爆热5789 J/g(ρ=1.83 g/cm3),威力168.4%TNT当量,真空安定性(5 g样品,100℃,40 h)放气量1.09 mL.采用DSC法和TG-DTG法测定了DNTF的热稳定性,利用真空安定法研究了DNTF同1,3,5-三硝基-1,3,5-三氮杂环己烷(RDX),1,3,5,7-四硝基-1,3,5,7-四氮杂环辛烷(HMX),2,4,6-三硝基甲苯(TNT)及推进剂含能组分的相容性,结果表明:DNTF具有较好的热稳定性,其分解温度为253.56℃;良好的相容性,可与常用含能材料(RDX,HMX,TNT)相容.DNTF能量较高、熔点较低、机械感度适中,安定性好,可作为新一代熔铸混合炸药的液相载体. 相似文献
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自行设计了3,4-双(4'-叠氮基呋咱-3'-基)氧化呋咱(DAZTF)的分子结构与合成方法,采用3-氨基呋咱-4-酰氯肟为原料,经重氮化、叠氮化、分子间缩合环化等反应合成目标化合物DAZTF,总收率为81%,并采用红外光谱、核磁共振光谱、质谱以及元素分析等进行了结构表征;首次培养了DAZTF单晶,X射线单晶衍射结果表明:DAZTF晶体属于单斜晶系,P2(1)/n空间群,a=1.1620(6)nm,b=0.6977(4)nm,c=1.4446(8)nm,α=90o,β=98.331(9)o,γ=90o,V=1.1589(11)nm3,Z=4,Dc=1.743g/cm3,μ=0.150mm-1,F(000)=608;同时,开展了DAZTF部分性能研究,其熔点50~52℃,分解温度204.20℃,摩擦感度86%~100%(90°摆角),撞击感度86%~100%(10kg,25cm). 相似文献
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3,4-二氨基呋咱基氧化呋咱的制备及晶体结构研究 总被引:9,自引:0,他引:9
首次通过3-氨基-4-氯肟基呋咱在热作用下脱HCl、[4 2]关环反应制备了新型呋咱(氧化呋咱)类含能化合物3,4-二氨基呋咱基氧化呋咱(DAFF),并培养出了DAFF单晶.用X射线单晶衍射、元素分析和红外光谱对其分子结构进行了表征.测试结果表明:DAFF晶体属三斜晶系,空间群P1,a=0.6400(4)nm,b=1.0609(8)nm,c=1.4634(7)nm,α=83.53(5)°,β=87.27(4)°,γ=77.74(5)°,V=0.9645(11)nm3,Z=4,Dc=1.737g?cm-3,F(000)=512,μ(MoKα)=0.149mm-1;R1=0.0568,wR2=0.1137.DAFF分子不共面,三环面扭曲,面间夹角为27.18(1.99)°和30.48(2.07)°,晶体中存在分子内和分子间氢键. 相似文献
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将含能化合物3-氨基-4-氯肟基呋咱(ACOF)在低温下用稀碱处理后发生过渡中间体3-氨基-4-氰基呋咱氧化物(ACFO)的二聚关环反应合成了新型呋咱类含能化合物3,4-二氨基呋咱基氧化呋咱异构体(DAFF iso-m er),产率达66.3%。培养了DAFF isom er的单晶。用四圆单晶X-射线衍射仪,1H NMR,13C NMR,IR,MS及元素分析对其结构进行了表征。结果表明:DAFF isom er晶体属三斜晶系,空间群P-1,分子呈平面构型,层状晶体内存在分子内和分子间氢键,晶胞堆积层间不存在氢键。 相似文献
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Chinh T. Bui 《合成通讯》2014,44(8):1122-1127
An improved one-pot synthesis of 3,4-disubstituted 2-quinolinones is described. The condensation of substituted 2-aminobenzophenone (or 2-aminophenyl alkyl ketone) with acid chlorides was carried out in the presence of triethylamine (or NaH) under microwave reaction conditions (150oC, 200 psi). The reactions were completed within minutes to produce 2-quinolinones in moderate to excellent yields and good purities.
[Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications® for the following free supplemental resource(s): Full experimental and spectral details.] 相似文献
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Synthesis,Characterization, and Antimicrobial Potential of Some 1,4-Disubstituted 1,2,3-Bistriazoles
C. P. Kaushik Krishan Kumar Dharmendra Singh S. K. Singh Deepak Kumar Jindal Raj Luxmi 《合成通讯》2013,43(17):1977-1985
AbstractA convenient synthesis of some new 1,4-disubstituted 1,2,3-bistriazoles (3a–3f, 4a–4f, 6a–6b, 7a–7b) is reported via copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition of various terminal alkynes with 1,4-bis(azidomethyl)benzene and 1,6-diazidohexane. The synthesized compounds were characterized by spectral techniques including infrared, 1H NMR, 13C NMR, and high-resolution mass spectrometry and tested in vitro for antimicrobial potential against Bacillus subtilis and Staphylococcus aureus (Gram-positive bacteria), Pseudomonas aeruginosa and Escherichia coli (Gram-negative bacteria), and Candida albicans and Aspergillus niger (fungi). Among the synthesized 1,4-disubstituted 1,2,3-bistriazoles, compounds 6a, 6b, and 7b displayed excellent antimicrobial potential against most of the tested strains. 相似文献
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Synthesis of New 3,4-Disubstituted Furazans 总被引:1,自引:0,他引:1
O. A. Ivanova E. B. Averina T. S. Kuznetsova N. S. Zefirov 《Chemistry of Heterocyclic Compounds》2000,36(9):1091-1096
A series of new 3,4-substituted furazans was synthesized on the basis of the mutual transformations of the functional groups in halogenomethyl and bisacyl derivatives of furazan. 相似文献
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N-三甲硅甲基苯甲醛亚胺为非稳定型亚甲胺基叶立德前体,在磷酸催化下与取代噁唑烷酮烯烃经1,3-偶极环加成反应合成了10个具有cis-trans立体结构的新型2,3,4-三取代四氢吡咯-3-羧酸衍生物(3a~3j),收率65%~75%,其结构经1H NMR, 13C NMR和HR-MS表征。3b的立体结构经X-单晶衍射确证。 相似文献
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合成了11个香豆素衍生物,产率53%—79%,利用元素分析、MS和1HNMR对其结构进行了表征.同时,由2-氨基苯并噻唑(ABT)和8-甲氧基香豆素-3-甲酸乙酯(MCC)合成了给体-受体加合物ABT-MCC,通过X射线单晶衍射法测定了其晶体结构,晶体属三斜晶系,P1空间群,晶胞参数为:a=9.5978(19)Å,b=10.686(2)Å,c=10.693(2)Å,α=71.30(3)°,β=70.43(3)°,γ=88.99(3)°,V=973.9(3)Å3,Z=2,Dx=1.359 mg/m3,μ=0.200 mm-1,F(000)=416,R=0.0463,wR=0.0992.结果表明,在ABT-MCC晶体中,分子间通过N—H…N和N—H…O氢键作用形成对称的A…D…D′…A′氢键四聚体,并通过弱的C—H…O氢键连接成为一维超分子链状结构,进而分子间通过π-π堆积作用形成层状结构. 相似文献
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含能笼型碳硼烷衍生物的合成及其热性能 总被引:1,自引:0,他引:1
以DMSO或DMF为溶剂,1-溴甲基碳硼烷(1)分别与亚硝酸钠和叠氮钠发生亲核取代反应,合成了两种新型的含能笼型碳硼烷——1-硝基甲基碳硼烷(2)和1-叠氮基甲基碳硼烷(3),其结构经1H NMR和FT-IR表征。用DSC分析了1~3的热性能,结果表明:1和2分别在162.2℃和168.7℃分解,分解热分别为130.4 J.g-1和245.6 J.g-1。 相似文献
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A novel series of 3,6-disubstituted coumarin derivatives were synthesized by the reaction of ethyl-2-(3-acetyl-2-oxo-2H-chromen-6-yl)-4-methylthiazole-5-carboxylate with thiosemicarbazide and various phenacyl bromides / 3-(2-bromoacetyl)-2H-chromen-2-ones / 2-(2-bromoacetyl)-3H-benzo[f]chromen-3-one in ethanol having catalytic amount of acetic acid under reflux conditions with good yields. All the synthesized compounds were fully characterized by spectral studies and evaluated for their in vitro antibacterial activity against Pseudomonas aeruginosa, Bacillus subtilis (Gram positive), Escherichia coli, and Azatobacter (Gram negative) bacterial strains. Activity results revealed that the compound 6h against Escherichia coli and compound 6i against Pseudomonas aeruginosa and Escherichia coli have shown maximum zones of inhibition. Remaining compounds showed moderate to good activity against all the tested bacterial strains compared with the standard drug cefotaxime. 相似文献