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- Using Chapman rearrangement to prepare 2, 6?dichloro?diphenylamine? 应用Chapman重排制备2,6-二氯二苯胺
- Little peroxides, computed by reactant alkenes 1‰, if put into jet fu... 添加极少量过氧化物,以反应烯烃计1‰,可以起到银片腐蚀抑制剂作用。
- How many dichloro derivatives of anthracene are possible Give their names. 答:蒽有多少种二氯衍生物写出他们的名字.
- METHOD: Using Chapman rearrangement to prepare 2, 6?dichloro?diphenylamine. 方法：应用Chapman重排制备2，6?二氯二苯胺。
- It provides a useful vehicle for transforming unsaturated acids to their corresponding alkenes. 它为使不饱和酸变成相应的烯烃提供了一个有用的中间体。
- The process provides a facile way of producing hydrocarbl perchlorate from alkenes, cycloalkenes, aralkenes, alkanols, cycloakanols and aralkanols. 本文介绍了从链烯、环烯、芳链烯、链烷醇、环烷醇、芳烷醇来制备过氯酸烃基酯的方便方法。
- The process provides a facile way of producing hydrocarbyl perchlorates, from alkenes, cycloalkenes, aralkenes, alkanols, cycloalknols and aralkanols. 本工艺程序提供了从链烯、环烯、芳链烯、链烷醇、环烷醇、芳烷醇来制备过氯酸烃基酯的方便方法。
- Polychlorobiphenyls in dye intermediate 2,6 _ dichloro _ 4 _ nitroaniline were analyzed by GC-MS in SIM method. 用气相色谱-质谱联用仪,采用选择离子的方法对染料中间体2,6_二氯_4_硝基苯胺中的多氯联苯进行分析。
- Many constituents are mutagens and carcinogenic such as alkenes, nitrosamines, polynuclear aromatic and heterocyclic hydrocarbons, amines . 烟草的很多成分都会引起有机体突变以及致癌;如烯烃化合物;亚硝胺;多核芳香烃以及多环碳氢化合物和铵.
- Six series of aryloxy pyridazines derivatives have been synthesized starting from 3,6 dichloro pyradizine. 以3,6-二氯哒嗪为原料,合成了6类芳氧基哒嗪类衍生物,研究了它们的合成方法,并测定了所得产物的除草活性。
- Catalysis: Development of chirometallopor-phyrins as enantioselective oxidation catalysts of alkenes and sulfides. 催化作用：开发新型手性金属催化烯类及硫醚类之对映选择性氧化。
- Recent progress on asymmetric epoxidation of unfunctionalized alkenes by chiral catalysts was summaried. 综述了手性催化剂催化的不对称环氧化反应研究进展情况。
- The synthesis and application of vinylic tellurides in stereoselective synthesis of alkenes were reviewed. 综述了近年来烯碲化合物的合成及其在立体选择合成中的应用。
- Alkanes, alkenes, and alkynes are all hydrocarbons (compounds made up of hydrogen and carbon only). 链烷、链烯和链炔都是碳氢化合物（纯净的碳和氢所组成的化合物）。
- The yield of dichloro compound is over 78%.The total yield of 2, 6-dichlorotoluene is over 60% and the purity of product is more than 99.0%. 该工艺氯化采用复合催化剂，无需用任何溶剂，二氯化物收率大于78%25,2,6-二氯甲苯总收率可达60%25，纯度大于99%25。
- Naming of alkynes is very similar to the naming of alkenes, using the root name of the longest carbon chain. 选取同时含叁键和双键最长的碳链做母体，使双键位次尽可能最小。
- The yield of dichloro compound is over 78%.The total yield of 2,6-dichlorotoluene is over 60% and the purity of product is more than 99.0%. 该工艺氯化采用复合催化剂,无需用任何溶剂,二氯化物收率大于78%25,2,6-二氯甲苯总收率可达60%25,纯度大于99%25。
- Epoxidation of alkenes is one of the most important reactions in organic, synthesis. 烯烃环氧化在有机合成中占有十分重要的地位。
- Reactive inorganic polymer-poly(dichloro)phosphazene was prepared through ring-opening polymerization at high temperature. 采用热开环聚合物方法,合成反应性无机聚合物聚(二氯)磷腈。
- Alkenes have one or more double bonds between carbon atoms, where two pairs of electrons are shared. 链烯有一个或多个共价键，即碳原子分享两对电子。
