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- The reaction conditions (time, temperature and so on) of the diazotization and coupling were investigated and optimized. 对反应的条件（时间，温度等）进行了讨论，优化了反应条件。
- diazotization and coupling 重氮偶合法
- The intermediate 2-amino-4-nitrophenol was diazotized and coupled with sodium 2,4-diaminobenzenesulfonate to form the high-strength leather brown RHM(C.I.Mordant brown 33). 制得的2-氨基-4-硝基苯酚经重氮化、与2;4-二氨基苯磺酸偶合;合成出高强度的皮革棕RHM(C.;I
- Appropriate aromatic amines were diazotized and coupled with the active methylene of the PVK to give a group of yellow pigments, which have the similar properties with Hansan Yellow dye. 然后再以合适的芳胺经重氮化反应偶合到PVK的活性亚甲基上，合成出类汉沙黄颜料。
- After nitrate was reduced by copper-coated cadmium granules,the nitrite produced was determined by diazotization of fuchsin acid and coupling to resorcinol. 采用镀有铜的镉还原硝酸盐(NO-3 )为亚硝酸盐(NO-2 )后,于酸性条件下,将品红与NO-2 进行重氮化,再与间苯二酚在弱碱介质中偶合成稳定的橙色染料。
- METHODS(9S)-Erythromycylamine was synthesized from Erythromycin through nucleophilic addtion,diazotization and hydrogenation reactions. 方法以红霉素为原料,经亲核加成、重氮化、氢化三步合成(9S)-红霉胺。
- Dimethylphenol was prepared based on 2,4-dimethylaniline by firstly diazotization and then hydrolysis in pipeline reactor. 以2,4-二甲基苯胺为原料,经重氮化及管道化水解得到2,4-二甲基苯酚。
- The machine consists of hopper, vibration chamber and coupling and motor. 本机由料斗、振荡室、联轴器、电机组成。
- Synthesis of triclosan from 2,4 Dichlorophenol and 2,5 Dichloro nitrobenzene usually involves such procedure as etherization,reduction of nitro group,diazotization and hydrolysis. 其合成一般是以2,4二氯苯酚和2,5二氯硝基苯为原料,经过醚化、硝基还原、重氮化、水解等几步反应。
- Difluoro phenol is prepared with 2,3,4-trifluoroaniline as a raw material through two steps of diazotization and hydrolysis, and then treated with a suitable method. 以2,3,4-三氟苯胺为原料,经过重氮化、水解2步,再采用合适的处理方法得到2,3-二氟苯酚,研究了合成条件。
- Fluorophenylhydrazine hydrochloride was synthesized from 4-fluoroaniline by diazotization and thenreduction with sodium bisulfite in an overall yield of 92%. 对氟苯胺经重氮化后用亚硫酸氢钠还原制得对氟苯肼盐酸盐,操作简便,收率92%25,易于放大制备。
- Be familiar with CAT fluid, CAT filters, XT hoses and coupling and other hydraulic components, hydraulic rebuild procedure and features. 熟悉卡特彼勒油品、滤芯、油管及接头、及其它液压元件，了解液压系统的流程特性。
- Using ethyl cyanoacetate, triethyl orthoformate and methylhydrazine as main raw materials, the herbicide pyrazosulfuron was prepared through the reactions of substitution, amination, cylclization, diazotization and chlorosulfonation. 摘要以氰乙酸乙酯、原甲酸三乙酯和甲肼等为主要原料，通过取代、胺化、环化、重氮化和氯磺化等反应制得了除草剂吡嘧磺隆原料药。
- Balsalazide was synthesized from 4-nitrobenzyl chloride via condensation, hydrogenation, diazotization and coupling.The synthetic process was optimized and the total yield was 73.9%. 摘要以对-硝基苯甲酰氯为起始原料，经缩合、还原、重氮化、偶合4步反应制得巴柳氮，总收率73.;9%25。
- The influences of zinc oxide crystal whisker, fumed silica and coupling agent on coatings performance were discussed. 讨论了导电氧化锌晶须、气相二氧化硅和偶联剂对涂料性能的影响。
- Difluoro phenol is prepared with 2,3,4-trifluoroaniline as a raw material through two steps of diazotization and hydrolysis, and then treated with a suitable method.Synthesis conditions are studied. 摘要以2,3,4-三氟苯胺为原料，经过重氮化、水解2步，再采用合适的处理方法得到2,3-二氟苯酚，研究了合成条件。
- I hit him fair and square on the jaw. 我不偏不倚打中他的下巴。
- It is a fact of life and you must face it. 这是严酷的现实，你必须面对它。
- The results indicate the oxidation of reactive materials and coupling of products are concomitants. 实验结果表明 ,在有稀土的双氧水处理体系中 ,底物的氧化与新生态有机物的耦合是共存的 ;
- She and I can't live under the same roof. 她和我不能住在一起。
