酰基卤
- 与 酰基卤 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In our research on study chemical reaction of active methylene compounds and brom-acetophenone. Because of brom-acetophenone is compound that contain carbonyl and halogen ,which will take place electrophilic substitution and nucleophilic addition. When active methylene compounds are ethyl acetoacetate and β-diketone, controlling reaction condition, we have found that mono-substitution's production and di-substitution's. production is isolated; active methylene compounds are acetoacetanilide and acetoacetanilide derivate, pyrrolidin-2-one derivants were obtained by substitution and close-ring reaction .but there is no report about it.
本文是让活泼亚甲基类化合物与溴代苯乙酮发生化学反应,由于溴代苯乙酮是含有羰基的卤代烃结构,它可以发生亲电取代和亲核加成反应,当活泼亚甲基类化合物为乙酰乙酸乙酯和β-二酮时,控制反应条件可以发生单取代和双取代两种产物;当活泼亚甲基类化合物为乙酰乙酰芳胺类化合物来反应时,溴代苯乙酮中的羰基与氨基会发生分子内的关环反应生成吡咯烷-2-酮衍生物,这在以前的研究中是没有发现的。
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METHODS The target compound was synthesized from 3,4-dimethoxyphenylacetic acid via halogenation, acylation, cyclization, alkylation and iodine substitution reaction.
以3,4-二甲氧基苯乙酸为原料,经卤化、酰化、环合、烷基化、碘取代等反应制得目标化合物。
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It provides a route tothe compounds which contains three functional groups, two carbon-nitrogentriple bonds and one carbon-carbon double bond. In water, metallic indiumpromotes carbon-sulfur bond coupling reaction of aromatic sulfonyl chloride withsuitable organic halides to afford sulfones. In the last chapter, metallic tin mediated allylation of aldimines with allylbromide was revealed.
第三章,我们研究了在水相介质中金属铟促进的烯丙基溴对1,1-二氰基-2-芳基乙烯的Michael加成反应,生成一个含碳碳双键和二个碳氮叁键的三官能团化合物,另外,金属铟在水介质中还可以促进芳基磺酰氯与卤代烃发生碳硫键的偶联,生成砜。
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Using p-xylene, different acyl chloride and alkylogen, six kinds of isomers were synthesized, with similar structure, carbons of same quantity, and the position of alkylaryl dissimilarity.
本文利用对二甲苯、不同碳数直链酰氯以及卤代烷合成出6种结构相似、长链烷烃碳数为12、芳基在烷烃链不同位置的烷基苯磺酸盐类表面活性剂。
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The first synthetic route uses 1,2,4-trimethoxybenzene and chloroacetonitrile in forming 2,4,5-trimethoxy-a-chlor-acetophenone under the anhydrous condition, then the intermediate condensates with papaverine forming the core pyrro[2,l-a]isoquinoline, followed by formation and lactonization to form the lactone ring. The second synthetic route uses prepared aldehyde with prepared ethyl nitroacetate by Knoevenagel condensation to obtain 2-Nitro-3-(2,4,5-tris-methoxy-phenyl)-acrylic acid ethyl ester and 2-Nitro-3-(2,4,5-tris-benzyloxy -phenyl)-acrylic acid ethyl ester etal intermediates. The lamellarin skeleton could arise from condensation of the papaverine and these intermediates by Michael reaction, the ester group is provided for subsequent lactonization. The third synthetic route uses coumarin or indan-l,3-dione derivatives and papaverine to form lamellarin under basic conditions.
第一条路线首先从1,2,4-三甲氧基苯出发与卤乙腈作用合成卤代芳酮中间体,然后与罂粟碱反应合成开链片螺素,最后经乙酰化、去保护、成内酯环得到片螺素;第二条路线由制备的芳醛和制备的硝基乙酸乙酯经缩合得到2-硝基-3-芳基丙烯酸乙酯,然后由该中间体与罂粟碱反应,在完成关环的同时也引入酯基,最后去保护、成内酯环得到片螺素;第三条路线是由香豆素或茚二酮出发,经溴代后的中间体与罂粟碱反应,得到片螺素的基本框架。
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Four different ionic liquids, BF4, BF and PF6 were investigated, arid PF6 showed the best effect when used as the reaction media, giving the highest yield in the shortest reaction time. Promoted by KF in PF6, N-aryl or N-alkyl monosubstituted sulfonamides could react with various activated halides and unactivated primary halides smoothly. Reactions were performed at 85℃ for 2~10 hours, and thirteen N-alkylation products were obtained with 70%~97% yields. Moreover, the ionic liquid recovered could be reused for three times with no appreciable decrease in yield and reaction rate.
结果表明,以PF6为反应介质时显示出了最好的效果,反应的时间最短,收率最高。N-芳基或N-烷基单取代的磺酰胺和各类不同结构的活化的卤代烃和未活化的一级卤代烃在PF6中KF作用下,85℃反应2~10h,以70%~97%的优良收率得到了13个N-烷基化产物,而且离子液体回收使用3次后效果未降低。
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ATRP initiation systems consist of organic chloride initiators (RCl, RBr or aryl sulfonyl chloride, etc.), transition-metal catalysts in lower oxidation state Cu(I, Fe, Ru, Ni, etc. and organic electronic-donating ligands (2,2'-bipyridine―bipy or bpy, PPh3, multidentate ligand compound 1,1,4,7,7-pentamethyldiethylenetriamine, etc.).
普通ATRP引发体系包括引发剂主要为氯或溴化物,芳基磺酰氯;低价过渡金属卤化物如Cu, Fe,Ru,Ni等;有机配体如2,2'-联吡啶,PPh3,脂肪族多元胺等。
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Organic our country high polymer flocculant already has commercialized at present having several breeds such as PAM , polypropylene acidamides and carboxyl methyl cellulose only , studies innocuous high-effect organic synthesis high polymer flocculant (the ammonium equality gathers the sum copolymer kind if alkyl alkene propyl group halogenates waiting), optimizes it's the cost reduction composing handicraft.
目前我国有机高分子絮凝剂已商品化的仅有PAM、聚丙烯酰胺和羧甲基纤维素等几个品种,研究高效无毒的有机合成高分子絮凝剂(如烷基烯丙基卤化铵的均聚和共聚物类等),优化其合成工艺降低成本。
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Acyl halides can also be in the carbonyl reaction with the Grignard reagent, sir into ketones, and then generate the tertiary alcohol.
酰卤中的羰基还可以与格式试剂反应,先生成酮,继而生成叔醇。
- 推荐网络例句
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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
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The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐
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The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。