1)1-bromo-2,4-difluorobenzene1-溴-2,4-二氟苯
1.Monitoring of Preparation Condition of 1-Bromo-2,4-difluorobenzene by Gas Chromatography/Mass Spectrometer气相色谱-质谱监测1-溴-2,4-二氟苯的合成条件、贡献及纯度
2.Objective To explore an economical method to synthesize the 1-bromo-2,4-difluorobenzene.目的探讨1-溴-2,4-二氟苯合成工艺的经济方法。
英文短句/例句
1.Monitoring of Preparation Condition of 1-Bromo-2,4-difluorobenzene by Gas Chromatography/Mass Spectrometer气相色谱-质谱监测1-溴-2,4-二氟苯的合成条件、贡献及纯度
2.Studies on the synthesis of tris(2,4-dibromophenyl)phosphate三(2,4-二溴苯基)磷酸酯的合成研究
3.Determination of 2, 4-Dinitrofluorobenzene by High Performance Liquid Chromatography (HPLC)高效液相色谱法测定2,4-二硝基氟苯
4.Synthesis of 2-(2,4-Difluoro)Phenyl-5-Alkyloxy Methyl Pyridine Derivatives2-(2,4-二氟苯基)-5-烷氧甲基吡啶的合成
5.The Crystal Structure of 3,5-di-Br-PADAT5-[(3,5-二溴-2-吡啶)偶氮]-2,4-二氨基甲苯的晶体结构
6.Study on synthesis of 1,2-bis(bromomethyl)-4-fluorobenzene1,2-二(溴甲基)-4-氟苯的合成路线研究
7.Synthesis of 1-(4-fluorophenyl)-5-bromo-1,3-dihydroisobenzofuran1-（4-氟苯基）-5-溴异苯并呋喃的合成研究
8.Determination of Crystal Structure of 5-Br-PADAT5—(5—溴—2—吡啶偶氮)—2,4—二氨基甲苯的晶体结构测定
9.SPECTROPHOTOMETRIC DETERMINATION OF Zr(Ⅳ) WITH 2,4-DICHLOROPHENYLFLUORONE-CTMAB SYSTEM2,4-二氯苯基荧光酮-溴化十六烷基三甲铵分光光度法测定微量锆
10.Evolutive Process and Mechanism of Photoinduced Toxicity of Fenoxaprop-p-Ethyl and 1-Amino-2,4-Dibromoanthraquinone精噁唑禾草灵和1-氨基-2,4-二溴蒽醌光致毒性演变过程与机理
11.The uses and synthetic methods on 2,4-Dichloro-5-Fluoro-benzoic acid were described in detail.简要概述了2,4-二氯-5-氟苯甲酸的用途及其合成方法。
12.The Effect of Yangxuezhiyang Tablets on Allergic Contact Dermatitis Induced by DNFB in Mice养血止痒片对2,4二硝基氟苯所致小鼠接触性皮炎的影响
13.UEBER DIE KOLORIMETRISCHE BESTIMMUNG DES FLUORS MITTELS 2, 4-DIOXYACETOPHENON UND FERRIIONEN氟的比色测定法 Ⅱ.用2,4-二羟基苯乙酮和铁(Ⅲ)作试剂
14.Study on the color reaction of 5-(5-fluoro-2-pyridylazo)-2,4-diaminotoluene with cobalt and its application5-(5-氟-2-吡啶偶氮)-2,4-二氨基甲苯与钴显色反应的研究及应用
15.Determination of Glutamate Decarboxylase Activity in Plant by Pre-column 30 Derivatization with 2,4-Dinitrophenylhydrazine2,4-二硝基氟苯柱前衍生法测定植物中谷氨酸脱羧酶的活力
16.Synthesis of 2,4-Difluoroaniline by Hydrogenation over a Pd Supported SiO_2 CatalystSiO_2为载体负载Pd催化加氢合成2,4-二氟苯胺的研究
17.Synthesis of Novel Side Chain Brominated 2,3,5,6-Tetrafluoroxylenes2,3,5,6-四氟对二甲苯侧链新型溴化物的合成
18.2-(2,4-dichlorophenoxy) propionic acid2-（2,4-二氯苯氧基）丙酸
相关短句/例句
2,4-Dibromofluorobenzene2,4-二溴-1-氟苯
3)2,4-difluorobenzyl bromide1-溴-2,4-二氟甲苯
4)2,4-Difluorobromobenzene2,4-二氟溴苯
5)2,4-Dibromo-fluoroaniline2,4-二溴-6-氟苯胺
6)2,4-Difluoro-5-Bromobenzonitrile2,4-二氟-5-溴苯腈
延伸阅读
1-溴-2,4-二氟苯分子式：C6H3BrF2分子量：193.00CAS号：348-57-2性质：无色透明液体。熔点-4℃，沸点145-146℃，闪点51℃，相对密度1.708，折射率1.5050。可与苯混溶。制备方法：由间二氟苯溴化而得。将间二氟苯与四氯化碳及铁粉混合，搅拌加热至45℃左右，慢慢滴加由溴与四氯化碳组成的溶液，滴完后继续搅拌30min，至无色烟产生为止。冷却，加入20%亚硫酸氢钠溶液，搅拌至无色。分出有机层，用10%氢氧化钠液洗涤，水洗至中性。用无水硫酸钠干燥过夜。进行常压蒸馏，收集144-148℃馏分，得到本品，收率83%.用途：用于合成广谱低毒深部抗真菌药物氟康唑（fluconazole)等的中间体。
