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- Using Chapman rearrangement to prepare 2, 6?dichloro?diphenylamine? 應用Chapman重排制備2,6-二氯二苯胺
- Little peroxides, computed by reactant alkenes 1‰, if put into jet fu... 添加極少量過(guò)氧化物,以反應烯烴計1‰,可以起到銀片腐蝕抑制劑作用。
- How many dichloro derivatives of anthracene are possible Give their names. 答:蒽有多少種二氯衍生物寫(xiě)出他們的名字.
- METHOD: Using Chapman rearrangement to prepare 2, 6?dichloro?diphenylamine. 方法：應用Chapman重排制備2，6?二氯二苯胺。
- It provides a useful vehicle for transforming unsaturated acids to their corresponding alkenes. 它為使不飽和酸變成相應的烯烴提供了一個(gè)有用的中間體。
- The process provides a facile way of producing hydrocarbl perchlorate from alkenes, cycloalkenes, aralkenes, alkanols, cycloakanols and aralkanols. 本文介紹了從鏈烯、環(huán)烯、芳鏈烯、鏈烷醇、環(huán)烷醇、芳烷醇來(lái)制備過(guò)氯酸烴基酯的方便方法。
- The process provides a facile way of producing hydrocarbyl perchlorates, from alkenes, cycloalkenes, aralkenes, alkanols, cycloalknols and aralkanols. 本工藝程序提供了從鏈烯、環(huán)烯、芳鏈烯、鏈烷醇、環(huán)烷醇、芳烷醇來(lái)制備過(guò)氯酸烴基酯的方便方法。
- Polychlorobiphenyls in dye intermediate 2,6 _ dichloro _ 4 _ nitroaniline were analyzed by GC-MS in SIM method. 用氣相色譜-質(zhì)譜聯(lián)用儀,采用選擇離子的方法對染料中間體2,6_二氯_4_硝基苯胺中的多氯聯(lián)苯進(jìn)行分析。
- Many constituents are mutagens and carcinogenic such as alkenes, nitrosamines, polynuclear aromatic and heterocyclic hydrocarbons, amines . 煙草的很多成分都會(huì )引起有機體突變以及致癌;如烯烴化合物;亞硝胺;多核芳香烴以及多環(huán)碳氫化合物和銨.
- Six series of aryloxy pyridazines derivatives have been synthesized starting from 3,6 dichloro pyradizine. 以3,6-二氯噠嗪為原料,合成了6類(lèi)芳氧基噠嗪類(lèi)衍生物,研究了它們的合成方法,并測定了所得產(chǎn)物的除草活性。
- Catalysis: Development of chirometallopor-phyrins as enantioselective oxidation catalysts of alkenes and sulfides. 催化作用：開(kāi)發(fā)新型手性金屬催化烯類(lèi)及硫醚類(lèi)之對映選擇性氧化。
- Recent progress on asymmetric epoxidation of unfunctionalized alkenes by chiral catalysts was summaried. 綜述了手性催化劑催化的不對稱(chēng)環(huán)氧化反應研究進(jìn)展情況。
- The synthesis and application of vinylic tellurides in stereoselective synthesis of alkenes were reviewed. 綜述了近年來(lái)烯碲化合物的合成及其在立體選擇合成中的應用。
- Alkanes, alkenes, and alkynes are all hydrocarbons (compounds made up of hydrogen and carbon only). 鏈烷、鏈烯和鏈炔都是碳氫化合物（純凈的碳和氫所組成的化合物）。
- 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%. 該工藝氯化采用復合催化劑，無(wú)需用任何溶劑，二氯化物收率大于78%25,2,6-二氯甲苯總收率可達60%25，純度大于99%25。
- Naming of alkynes is very similar to the naming of alkenes, using the root name of the longest carbon chain. 選取同時(shí)含叁鍵和雙鍵最長(cháng)的碳鏈做母體，使雙鍵位次盡可能最小。
- 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%. 該工藝氯化采用復合催化劑,無(wú)需用任何溶劑,二氯化物收率大于78%25,2,6-二氯甲苯總收率可達60%25,純度大于99%25。
- Epoxidation of alkenes is one of the most important reactions in organic, synthesis. 烯烴環(huán)氧化在有機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. 采用熱開(kāi)環(huán)聚合物方法,合成反應性無(wú)機聚合物聚(二氯)磷腈。
- Alkenes have one or more double bonds between carbon atoms, where two pairs of electrons are shared. 鏈烯有一個(gè)或多個(gè)共價(jià)鍵，即碳原子分享兩對電子。
