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- The activities of palladium catalysed cross coupling reactions of substituted bromobenzenes were studied. 分析了温度、化剂、同取代基团对取代溴苯发生钯催化偶联反应活性的影响。
- In addition, two possible mechanisms for these amino acid-promoted Ullmann-type coupling reactions were discussed. 本论文根据前人的研究成果，结合自身实验结果，提出两种可能的反应机理。
- This paper reviews the reductive reactions and reductive coupling reactions induced by low-valent titanium reagents. 本文综述了低价钛试剂引起的还原及还原偶联反应。
- In the crossing coupling reactions, the yield is at similar level due to unobvious electron effect resulted from the existence of ketones. 苯环上取代基的种类及位置对反应也有影响。在交叉偶联中，由于有酮存在，因此电子效应不明显，产率差不多。谢谢大家！
- Six liquid crystals intermediates were synthesized by palladium catalysed cross coupling reactions with six substituted bromobenzenes and2 methyl3 butyne2 ol. 以4氟溴苯、,4二氟溴苯、,4,5三氟溴苯、碘溴苯、甲氧基溴苯、丙基溴苯为原料,分别与2甲基3丁炔2醇发生钯催化偶联反应,合成了6个苯基炔醇液晶用中间体。
- We have successfully synthesized homologous series of oligofluorenes with variety of C9 substituents and backbone lengths by successive Suzuki coupling reactions. 摘要:我们利用简易的合成方法成功地合成出一系列具有不同共轭长度及侧链之寡聚芴分子。
- The coupling reaction between the difficult sequence Fmoc-Arg(Pbf)-OH and H-Pro-Trt resin was investigated. 着重研究了Fmoc-Arg(Pbf)-OH与H-Pro-Trt树脂的缩合反应。
- The macrokinetics of CO gas coupling reaction on Pd catalyst was studied in a fixed-bed reactor. 采用固定床积分反应器;研究了自制的负载型钯系催化剂上CO气相催化偶联主、副反应的宏观动力学模型.
- In addition, boric acid and halogenated hydrocarbons aryl the coupling reaction is a C-C bond important ways. 此外，芳基硼酸与卤代烃的偶合反应是形成C-C键的重要途径。
- Synthesize saframine O using o-toluidine as primer reactant by diazotization, coupling reaction, reduction reaction, and oxidation. 研究了以邻甲基苯胺为起始原料,经重氮化、偶合、还原、氧化反应合成藏花红的方法。
- The conditions of silver sulphide dissolving in sodium cyanide have been discussed by the use of thermodynamic principle and coupling reaction. 应用热力学原理和偶合反应的观点对硫化银溶于氰化钠的条件进行了讨论.
- Effects of main reaction conditions such as reaction time to the coupling reaction and the yield of squalene were studied primarily. 通过自制高效偶联试剂三三苯基膦氯化亚钴和自制金合欢基溴的还原偶联反应,成功地合成了角鲨烯。
- The synthesis methods of hexamethyldisilane, such as reductive coupling reaction, Grignard reagent alkylation, electrochemical reduction et al, were recounted in details. 综述了近年来国外关于六甲基二硅烷的合成工艺(还原耦合法、格氏试剂法、电解还原法等);
- Aim：To synthesize new triazene compound. Methods： Nitrogen coupling reaction of the diazonium salt. Results and conclusion: Element analysis and IR data certified the product. 目的：合成三氮烯类新试剂。方法：通过重氮盐的氮偶联反应。结果与结论：元素分析和红外光谱数据证实产物为三氮烯类化合物。
- The application of acid catalysts in the coupling reaction of formaldehyde and methyl formate to form methyl glycolate and methyl methoxyacetate was investigated. 摘要选取不同酸强度的催化剂硫酸、三氟甲烷磺酸、硫酸氢钠和硫酸氢钾，研究了酸催化剂在甲醛与甲酸甲酯偶联合成乙醇酸甲酯和甲氧基乙酸甲酯反应中的作用。
- The synthesis of dimethyl oxalate (DMO) and diethyl oxalate (DEO) by CO coupling reaction in gaseous phase over the supported palladium catalysts was investigated. 在固定床反应器中对钯系催化剂上CO气相催化偶联制草酸二乙酯和草酸二甲酯的空时收率、选择性和CO的转化率进行了实验研究。
- Because of the larger branched chains of POE,the coupling reaction between the macromolecular radicals was substantially inhibited and therefore POE g MAH products with prefer... 酸酐在POE树脂上的接枝率随过氧化物和接枝单体用量的增加而增大。
- Pinacol coupling reaction induced by low valent titanium has higher chemoselectivity and stereoselectivity,and has increasing attracted organic chemists in recent years. 由低价钛络合物诱发的片呐醇偶联反应,具有良好的化学选择性和立体选择性,近几年来又引起有机化学家们的极大兴趣与重视。
- A new electrochemical voltammetric enzyme immunoassay system was investigated based on p-nitrophenyl phosphate (PNPP)-alkaline phosphatase (ALP) coupling reaction. 研究了对硝基磷酸苯酯（PNPP）为底物伏安法测定碱性磷酸酯酶（ALP）的方法。
- Aim:To synthesize new triazene compound. Methods: Nitrogen coupling reaction of the diazonium salt. Results and conclusion: Element analysis and IR data certified the product. 目的:合成三氮烯类新试剂。方法:通过重氮盐的氮偶联反应。结果与结论:元素分析和红外光谱数据证实产物为三氮烯类化合物。
