This is a new conceptual design for half micro-scale experiment of the preparation of bromoethane,because of when changing the quantity and adding the way of the feed stock,no any infection to the rate of production of bromoethane.
在不影响溴乙烷正常产率的前提下,改变原料量和加料方法,设计出制备溴乙烷的半微型实验新方案,与常量制备法相比,具有节约药品,操作安全省时,污染小等优点,在教学实践中经反复检验,符合半微型化学实验要求,是值得推广的新实验方案。
N,N-Diethylaniline was synthesized from aniline and bromoethane in C_6H_5NH_2/CTAB/C_4H_9OH/H_2O microemulsion under normal atmosphere.
在常压下向苯胺/十六烷基三甲基溴化铵/正丁醇/水微乳体系中滴加溴乙烷合成N,N-二乙基苯胺。
The content and ingredient as well as origins of impurity in bromoethane made from dregs of bromine at a pharmaceutical manufacturer was analysed through GC and GC-MS.
通过气相色谱仪和气相色谱-质谱联用仪确定了某制药厂用回收的溴化钠生产的溴乙烷中所含杂质的具体成分及其含量。
Mass analyzed threshold ionization spectra of ethyl bromide;
溴乙烷分子的质量分辨阈值光谱
8%,while m-aminophenol was used as material,ethyl bromide as ethyl reactant, dimethylsulfate as methyl reactant,and synthesis process was optimized by means of changing solvent and feeding appropriate phase-transfer catalyst etc.
以间氨苯酚为原料,用溴乙烷做烷基化试剂,硫酸二甲酯作甲基化试剂,通过改变溶剂及加入合适的相转移催化剂等方法优化工艺,经两步反应合成N-乙基间甲氧基苯胺,产率达到48。
By experiments utilizing an orthogonal design,optimum synthesis conditions were obtained as follows: in the ethyl bromide route,the molar ratio of 4-hydroxyphenylacetic acid to ethyl bromide was 1 ∶ 1.
以对羟基苯乙酸为原料,分别采用溴乙烷和硫酸二乙酯为醚化试剂,经Williamson醚化合成了对乙氧基苯乙酸。
Ethylferroene was carried out using Ethyl bromine as Alkylation agent and anhydrous aluminium chloride as catalyst by ferrocene Friedel-crafts reaction.
以三氯化铝为催化剂,溴乙烷为烷基化剂,利用二茂铁的Friedel-crafts烷基化反应合成乙基二茂铁,探讨了反应温度、物料摩尔比、反应时间、催化剂用量及投料方式对反应的影响,确定了合成工艺:二茂铁、溴乙烷和无水三氯化铝的摩尔比为1:1:0。
Diethylferroene was carried out in 1,2,3-trichloromethane using diethyl bromine as alkylation agent and anhydrous aluminium chloride as catalyst by ferrocene Friedel-crafts reaction.
以三氯化铝为催化剂,溴乙烷为烷基化剂,利用二茂铁的Friedel-crafts反应合成出了二乙基二茂铁,探讨了反应温度、物料摩尔比、反应时间、催化剂用量及投料方式对反应的影响,确定了适宜合成工艺:二茂铁、溴乙烷和无水三氯化铝的摩尔比为1∶2。
METHODS By this method, iodomethane was replaced with bromoethane.
方法以溴乙烷替代碘甲烷进行烷基化反应。
The synthesis method and process have been discussed.
对实验室合成溴乙烷的方法和步骤进行讨论。
Objective: To study the sampling and determinating method of Ethylene dibromide among the workplace air.
目的:探讨工作场所空气中1,2-二溴乙烷的采样和测定方法。
dibromotetrafluoroethane [halon 2402] [C2F4Br2]
二溴四氟乙烷〔哈龙2402〕
cetyltriethylammonium bromide
鲸蜡（基）三乙基溴化铵，十六烷基三乙基溴化铵
ethylene diammonuim bromide
溴化双十八烷基十甲基乙二铵
The Synthesis of 2, 2-bis [3,5-dibrom-4 (2-hydroxyethoxy) phenyl] propane by Epoxy Ethane
环氧乙烷法合成2,2—双[3,5—二溴—4(2—羟乙氧基)苯基]丙烷
Study on the chromogenic reaction of the system Samarium (III) DBS-chlorophosphonazo-hexadecylpyridinium bromide-ethanol;
二溴磺酸偶氮氯磷-溴代十六烷基吡啶-钐-乙醇显色体系的分析研究
Synthesis and Characterization of 5-Alkyl-(2-Bromoethyl)-1,3-Dioxanes;
5—烷基—2—溴乙基—1,3—二氧六环的合成及表征
Analysis and Outlook of Combustion Performances of Decabromodiphenyl Ethane (DBDPE) Flame Retardant ABS
十溴二苯乙烷对ABS阻燃性能分析与展望
DBDPE for the Flame-retardant Finish of Polyester Venetian Curtains
十溴二苯乙烷用于涤纶百叶窗帘的阻燃整理
The Oretical Study on the HBr-Induced Ring Opening of Styrene Oxide in the Presence of β-CD;
β-环湖精中环氧苯乙烷与氢溴酸反应机理的理论研究
Study on Synthesis of Phenoxyethyl Dimethyl Palmitylammonium Bromide and its Properites;
十六烷基二甲基苯氧乙基溴化铵的制备及性能研究
Synthesis and Characterization of 5, 5 - Dioctadecyl - 2 - (2 - Bromoethyl) - 1, 3 - Dioxane;
5,5-二正十八烷基-2-(2-溴乙基)-1,3-二氧六环的合成及表征
Microwave Synthesis Technique and Properties of Dodecylmethyldihydroxyethyl Ammonium Bromide
十二烷基甲基二羟乙基溴化铵的微波合成及性能研究
Study on the Kinetics of the Synthesis of Dodecylmethyldihydroxyethyl Ammonium Bromide
沸腾状态下十二烷基甲基二羟乙基溴化铵微波合成的动力学研究
styrene dibromide
α,β-二溴乙基苯
CTAB (Cetyltrimethyl Ammonium Bromide)
溴化十六烷三甲基铵