二氯化合物
- 与 二氯化合物 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The synthesis methods of energetic salts and energetic ionic liquids(cations including triazole, tetrazole, bridged azole, hexamethyenetetrammonia, etc;and anions including nitrate, perchlorate, azide, tetranitratealuminate, polycyan anion, N,N'-dinitrourea, etc.) are reviewed, and the effects of cations, anions and their substitution groups on melting point, enthalpy of formation, density of the materials are summarized.
本文综述了多种含能盐和含能离子液体(阳离子包括三唑、四唑、双环唑、六次甲基四胺等;阴离子包括硝酸根、高氯酸根、硝基唑、叠氮根、四硝基铝、多腈基化合物、二硝基尿素等)的合成;结合其表征结果分析了阳离子上的取代基以及阴阳离子对它们的性能如熔点、生成焓、密度等的影响。
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Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.
采用"一勺烩"方法,以4-羟基苯甲腈为起始原料,首先与硫氢化钠和无水氯化镁在N,N-二甲基甲酰胺中反应,所得中间体不经分离,直接加入2-氯乙酰乙酸乙酯进行环合反应,得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(2);然后通过六亚甲基四胺/三氟乙酸进行Duff反应,得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(3);再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。
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Based on the characteristic that boracic acid (H3BO3) has a condasation and complexation reaction with 3-MCPD forming a negative-charged adduct in aqueous phase, arapid method for the direct determination of 3-MCPD in HVP by capillary electrophoresis with conductivity detection was investigated.
利用硼酸能与3-氯-1,2-丙二醇(3-MCPD)上的2个邻位羟基进行键合生成配合阴离子、从而增加多羟基化合物的负电荷的特性,在15 mmol/L 三羟甲基氨基甲烷-10 mmol/L H3BO3(pH 8.3)介质中,采用毛细管电泳/电导检测法分离检测了3-MCPD,该方法的线性范围为0.5-20 mg/L,检出限为0.1 mg/L(S/N=3)。
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The photo reactions of β-diketones compounds with chloranil in C6D6 were through free radical intermediates.
β二酮类化合物与四氯苯醌在C6D6溶液中的光化学反应过程具有自由基反应的特点。
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The different substitutes had an effect on the main form of β-diketones, making the hydrogen donors to chloranil different correspondingly.
二酮类化合物中的不同取代基会影响其主要存在形式,因而使得四氯苯醌夺取氢的对象也有所不同。
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In the process, chloranil firstly was excited to singlet state and then a labile hydrogen abstraction interaction between singlet chloranil andβ-diketones was involved to form singlet stable neutral radical pairs.
光照作用下,四氯苯醌首先跃迁至单线态,然后夺取β二酮类化合物分子中的活泼氢,形成单线态中性自由基对。
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RESULTS: 12 compounds were isolated and identified as aurantiamide acetate (1), aurantiamide benzoate (2), physcion (3), scopoletin (4), vanillin (5), coniferyl aldehyde (6), syringaldehyde (7), syringic acid (8), luteolin (9), apigenin (10), azelaic acid (11), dotriacontanic acid (12), respectively.
结果:从羊耳菊全草的氯仿和乙酸乙酯部分共分离得到12个化合物,分别鉴定为橙黄胡椒酰胺乙酸酯(1),橙黄胡椒酰胺苯甲酸酯(2),大黄素甲醚(3),东莨菪亭(4),香草醛(5),松柏醛(6),丁香醛(7),丁香酸(8),木犀草素(9),芹菜素(10),壬二酸(11),三十二烷酸(12)。
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The phosphorus oxychloride or phosphorus tribromide N, N-dimethylformamide mix and react to form the Vilsmeier reagent used in the reaction. The newly prepared Vilsmeier reagent is added into the reaction bottle provided with the return condenser and the blender; a reaction raw material N, N-dimethylformamide solution expressed in the reaction formula is added into the system; the temperature is risen; the corresponding multi substituting pyridine-2 (1 H)-ketone compound can be made after the column chromatography of the silica gel; the production rate is between 60 and 95 percent according to different reactions.
由三氯氧磷或三溴化磷N,N-二甲基甲酰胺混合获得反应中所用Vilsmeier试剂;将新配制的Vilsmeier试剂加入装有回流冷凝管、搅拌器的反应瓶中,向体系中加入反应通式中表示的一种反应原料的N,N-二甲基甲酰胺溶液,升温,经硅胶柱层析分离得相应的多取代吡啶-2(1H)-酮类化合物,产率视不同反应在60~95%之间。
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Following resolution, the following steps are performed: reduce the isomer to an alcohol, react the alcohol with triphenylmethyl chloride, ozonalyze the resulting reaction product, reduce the ozonalyzed product to yield a diol and react the diol with a methane sulfonyl compound to form-3-2-{(methylsulfonyloxy}ethoxy-4--1-butanol methane sulfonate.
拆分后,进行下一步:将异构体还原为醇,使醇与三苯基甲基氯反应,臭氧化所得反应产物,还原臭氧化产物以得到一种二醇并使所述二醇与甲烷磺酰基化合物反应以形成-3-2-{(甲基磺酰基氧}乙氧基-4--1-丁醇甲烷磺酸酯。
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注册商标有&鹿牌&合成樟脑,&桃浦&牌合成樟脑副产物和其他化工产品,&金牛&牌抗氧剂,发泡剂,水合肼,二甲基乙酰胺,二甲基乙醇胺,&海球&牌硅胶系列,&飞铃&牌磷氯,双乙烯酮衍生物,磷酸酯,乙烯利等,&泉字&牌,&水晶&牌各类泡化碱系列,&上胶&牌钼类化合物,石墨类产品系列。
- 推荐网络例句
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I can not make it blossom and suits me
我不能让树为我开花
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When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.
当温度高于 80 °C 左右时,滚道或滚动元件褪色是很常见的特征。
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The lawyer's case blew up because he had no proof.
律师的辩护失败,因为他没有证据。