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- Doxifluridine was facilely synthesized from 5-fluorouracil in overall yield of 54.6% via trimethyl silylation, condensation, saponification, ketal formation, iodation, hydrogenolysis and hydrolysis. 以5-氟尿嘧啶为原料经硅醚化、和四乙酰核糖缩合、皂化、酮缩醇形成、碘化、氢解及水解等反应合成了去氧氟尿苷。本法工艺简便、条件缓和、原料易得、成本低;总收率达54.;6
- Keywords fungal polysaccharide;methanolysis;trimethyl silylation;marine mangrove fungus; 真菌多糖;甲醇解;三甲硅醚化反应;
- Keywords Haliotis diverisicolor Reeve;sulphated polysaccharide;methanolysis;trimethyl silylation; 杂色鲍鱼;硫酸酯多糖;甲醇解;三甲硅醚反应;
- trimethyl silylation 三甲硅烷基化作用
- trimethyl silyl acetate 三甲基甲硅烷乙酸酯
- Study on the Silylation of Aromatic Hydrocarbons. The Trimethylsilylation of Naphthalene 杨美惠;刘梦兰;
- English Name Trimethyl OrthovalerateCAS NO. 原戊酸三甲酯英文名称。
- Silylation of hydroxyethyl cellulose was produced by as using hexametyyldisilazane (HMDS) as silylation agent. 摘要以六甲基二硅胺烷(HMDS)作为硅烷化试剂,合成了三甲基硅基羟乙基纤维素。
- Silylation, P modification and MgO modification can improve p-DEB selectivity greatly. MgO改性提高对二乙苯选择性最为明显。
- The gas chromatograph method for determination of silylation yield of hydroxyethyl cellulose was establised. 并建立了用气相色谱法测定甲硅烷基化率的方法。
- Ingredients:Rose extract,cetearyl alcohol, dimethyl silicone oil, glycerol, octadecyl trimethyl ammonium chloride. 成分:玫瑰提取液,十六十八混合醇,二甲基硅油,甘油,十八烷基三甲基氯化铵。
- Ingredients:olive extract,cetearyl alcohol, dimethyl silicone oil, glycerol, octadecyl trimethyl ammonium chloride. 成分:橄榄提取液,十六十八混合醇,二甲基硅油,甘油,十八烷基三甲基氯化铵。
- The common MDJ reacted wih trimethyl chloro-silane to produce the enol silicon ether. 摘要高顺式-二氢茉莉酮酸甲酯(MDJ)作为香料其性能远优于普通MDJ,是各大香精香料公司的招牌产品之一。
- On the other hand, the activity and selectivity can also be greatly promoted by silylation due to the enhancement of the surface hydrophobicity of the materials. 硅烷化处理增加材料表面的疏水性,能够大幅度提高活性和选择性。
- A metallocene complex in which the cyclopentadienyl group is substituted with an alkanediyl silyl group. 本发明提供一种芳环烯金属错合物,其中之环戊二烯基被烷二基矽基所取代。
- The effect of TMCS/OH ratio, co-solvent, reaction temperature, reaction time and HMDS/OH ratio on silylation yield was investigated. 研究了反应温度、反应时间、共溶剂等因素对羟乙基纤维素甲硅烷基化率的影响。
- Cationic mono-ester surfactants(CMESA)was prepared using glycidyl trimethyl ammonium chloride(GTMAC)and stearic acid as starting materials with a single step reaction. 以自制的失水甘油基三甲基氯化铵(GTMAC)和硬脂酸为原料,经一步反应合成阳离子单酯表面活性剂(CMESA)。
- Preparation methods and degradation behavior for poly(carboxylic acid silyl ester)s were reviewed. 综述了聚羧酸硅基酯的合成方法和降解性质。
- The cetyl trimethyl ammonium bromide (CTAB) was intercalated into the layered silicate bentonite, and the interlayer of the bentonite was modified. 利用十六烷基三甲基溴化铵(CTAB)嵌入到具有层状结构的膨润土层间,使膨润土层间得到改性;
- Because of the strong interaction between the trimethychlorosilicane and surface hydroxy groups of mordenite, silylation is used to modify mordenite. 本文旨在通过硅烷化、脱铝改性丝光沸石,以提高丝光沸石疏水性能,为疏水沸石的开发利用提供一些基本数据和实验依据。