1)diazotization[英][dai,?z?ti'zei??n][美][da?,?z?t?'ze??n]重氮化
1.Aromatic Amines in Organic Synthesis of Diazotization;芳胺重氮化在有机合成中的应用
2.The preparation D-phenylalanine from N-carbamoyl-D-phenylalanine by diazotization;N-氨甲酰-D-苯丙氨酸重氮化法制备D-苯丙氨酸的研究
3.Theoretical study of reaction mechanism of diazotization of 4-amino-5-nitro-1,3-difluorinbenzene;4-氨基-5-硝基-1,3-二氟苯重氮化反应机理研究
英文短句/例句
1.azoic printing compositions不溶性偶氮染料印花组分（指色酚与稳定的重氮化合物的混合体）
2.Improved on process of synthesizing o-cresol by diazotization and hydrolysis of o-toluidine邻甲苯胺重氮化-水解制备邻甲酚工艺改进
3.Study on Post Diazotization of Polymethyl Acrylic Ethyl Carbazole Ester聚甲基丙烯酸乙基咔唑酯后重氮化的研究
4.Experimental study on aniline diazotization without cooling in a spiral reactor无冷却螺旋管式苯胺重氮化反应工艺试验研究
5.Studies on the Synthesis of Highly Substituted Furans with Diazo Compounds by Metal Catalyzed;金属催化重氮化合物参与的多取代呋喃合成研究
6.anthraquinonediazonium chloride zinc chloride compound蒽醌重氮氯化锌复合物
7.Important Role of Nitric Oxide in Stored Red Blood Cells--Review一氧化氮在贮存红细胞中的重要意义
8.Study on the Application of Acid Additives to Catalytic Cracking of Heavy Oil Containing Nitrogen Compounds;酸性添加物用于高含氮重油催化裂化的研究
9.The impact of nitride contents on catalytic reforming device氮化物含量对催化重整装置影响的研究
10.Study On Colour Reactions of 4,4 -Biozobenzenediazoaminoazobene with Cationic Surfactants and Its Application;4,4 -对偶氮苯重氮氨基偶氮苯与溴化十六烷基三甲铵显色反应的研究及应用
11.Specific leaf weight and nitrogen content had positive relation to the net assimilation rate.比叶重和含氮量与净同化速率间存在正相关。
12.On The Heavy Nitrogen Sensitization GlueThat Silk-Screen Printing Makes A Plate and Its Photochemical Reaction Mechanism;丝网印刷制版重氮感光胶及其光化学反应机理
13.The Development of Triazenes in Analytical Chemistry;重氮氨基类试剂在分析化学中的研究进展
14.Synthesis and Identification of a New Phenyl Diazonium Zinc Chloride Double Salt;一种新的苯重氮氯化锌复盐的合成及结构
15.variation in wet deposition of nitrogen from atmosphere in typical areas of Chongqing重庆典型地区大气湿沉降氮的时空变化
16.Effects of soil bulk density on distribution and transportation and transformation of soil moisture and nitrogen under film hole irrigation土壤容重对膜孔灌水氮分布和运移转化的影响
17.Diphasic action of nitric oxide in doxorubicin-induced cardiotoxicity一氧化氮在阿霉素心脏毒性中的双重作用
18.In this case the most important are nitrogen compounds, then follow compounds of oxygen and sulfur .在这种情况下最重要的是氮化物，其次才是氧化物和硫化物。
相关短句/例句
diazotisation重氮化
1.First, 5-nitro-1 and 4-naphthoquinone are prepared through nitration and oxidization of naphthalene, and then through reduction of nitro into amide, diazotisation of the amide and hydro-lytic action of diazo salt, the juglone is made.萘经过硝化、氧化生成5-硝基-1,4萘醌,然后硝基还原成氨基、氨基重氮化、重氮盐再水解,最终用新方法制得胡桃醌。
2.Methoxystilbene and 2-methoxy-4'-nitrostilbene were synthesized from benzyl chloride and nitrobenzyl chloride by the Wittig reaction, and used as intermediates for the synthesis of the final product fluorescent whitener FP(4,4'-bis(2-methoxystyryl)biphenyl) via reduction and diazotisation of the latter followed by reaction with the former in the presence of NaOH.后者经还原反应、重氮化反应后,在氢氧化钠存在下与前者反应生成最终产品荧光增白剂FP(4,4'-双-2-(甲氧基苯乙烯基)联苯)。
3.The title compound was prepared from \%o\%aminophenol and \%m\%phenylenediamine by diazotisation, coupling reaction and closure, yield was 80 %.以邻氨基酚和间苯二胺为原料,经重氮化、偶合、环化制备2 (2 羟基苯基) 5 氨基 2H 苯并三唑化合物,产率为80%。
3)diazonium[英][,dai?'z?uni?m][美][,da??'zon??m]重氮化
1.By synthetic process as compared with reaction mechanism, we probe into the process to synthesize m-bromoanisole by m-aminophenol as raw material via diazonium, Sandmeyer reaction, aci-dolysis, and etherifying reaction, and analyze its parameters of the process.根据反应机理和合成工艺比较,研制了以间氨基苯酚为原料,经重氮化、Sandmeyer反应、酸解和醚化反应合成间溴苯甲醚的工艺过程,并探析了有关工艺参数,总收率54%。
4)diazotized[英][dai'?z?taiz][美][da?'?z?,ta?z]重氮化的
5)diazotype[dai'?z?,taip]重氮化型
6)diazonium halide卤化重氮
延伸阅读
重氮化 芳伯胺与亚硝酸作用生成重氮化合物(简称重氮盐)的反应过程。亚硝酸通常是用亚硝酸钠与无机酸在反应液中就地生成的。重氮化可用以下通式表示： 式中Ar表示芳基；X-表示酸根。 重氮盐一般能溶于水，在水中能电离，其结构式可写为： 重氮化的重要性在于重氮盐的化学性质非常活泼，可发生多种反应。重氮盐与酚或芳胺可发生偶合反应生成偶氮化合物，所以重氮化是制备偶氮染料（见染料）的主要过程。重氮盐中的重氮基(-N娚X-)在适当条件下可以发生多种转化反应，从而可在芳环上引入羟基、卤素、氰基、巯基和肼基等取代基。有些重氮盐可用于非银感光材料的生产。 过程特点 重氮化是放热反应，而且反应速率相当快。由于重氮盐不稳定，为了增加重氮盐的稳定性并避免副反应,重氮化时通常要用过量较多的无机酸,并始终保持亚硝酸钠微过量。重氮盐受光或受热都会分解。有些重氮盐在干燥状态受热或受震会急剧分解而引起爆炸。因此，重氮化一般要在0～10℃下进行,制得的重氮盐溶液要立即进行下一步反应，不宜存放过久，更不宜制成干品。但根据印染工业的需要，在特定条件下可将某些重氮化合物制成稳定形式（见冰染染料）。 重氮化方法 具体方法取决于被重氮化的芳伯胺的性质。最重要的方法有：①正重氮化。大多数溶于稀无机酸的芳伯胺采用此法重氮化，即把亚硝酸钠水溶液加到芳伯胺的无机酸水溶液中。②反重氮化。在稀酸中难溶解的氨基芳磺酸等用此法重氮化，即先将氨基芳磺酸用碱液溶解，与亚硝酸钠溶液混合，再把混合溶液加到稀无机酸中。③亚硝酰硫酸法。用于在稀酸中难溶解的芳伯胺重氮化,即先将芳伯胺溶于浓硫酸或冰醋酸中,再向其中加入亚硝酰硫酸溶液。 重氮化一般用釜式反应器间歇操作。为了防止稀酸的腐蚀，一般用搪瓷或衬瓷砖锅，反应时在反应器中直接加入碎冰，或用冷冻盐水通入夹套或搪瓷蛇管来控制反应温度。
