查询词典 synthesis method

A simple and efficient method for the synthesis of N3-functionalized 3,4-dihydropyrimidinones by aza-Michael addition reactions of 3,4-dihydropyrimidinones toα,β-ethylenic compounds catalyzed by KF/Al_2O_3 is described.

研究结果表明：DHPMs类化合物可与α，β-不饱和羰基化合物发生Michael加成反应，产物只有N3位功能化的DHPMs，而没有N1位的产物。

The feasibility of producing forsterite refractory with hi-silicon iron tailings and hi-magnesium raw material was discussed, the synthesis reaction process was studied by laboratory experiment, and the method of producing forsterite refractory and lightweight forsterite refractory by use of iron tailings were offered.

论证了利用鞍山地区高硅型铁尾矿和高镁原料合成和制备镁橄榄石材料的可行性，实验研究了合成反应过程，提出以铁尾矿生产镁橄榄石耐火材料和轻质保温耐火材料的方法。

Synthesis of glycidol and epoxidized polyurethane and their characterization;2. Improvement in Hyperbranched Poly glycidol Hydroxyl Groups' Conversion by Protection Method;3. The structure of glycidol was confirmed by IR and 1HNMR.

以一氯代丙二醇为原料，与碱性化合物在低温作用下合成了缩水甘油，并通过IR、1HNMR对其进行了结构表征。

This paper introduced the typical application of glyoxylic acid in the synthesis of fine chemical products and the basic manufacture method.

本文介绍了乙醛酸在精细化学品合成中的典型应用和乙醛酸的基本生产方法，并比较了不同生产方法的各自特点，同时分析了乙醛酸的市场情况，指出了高质量乙醛酸将具有良好的市场前景。

By adopting the method of stepwise synthesis, this paper synthetizes 1,3 - diaminopropanein 2-Hydroxy-3-methoxybenzaldehyde Zn-Sm heteronuclear bimetallic in Anhydrous methanol solution.

6楼本文采用分步合成的方法，在无水甲醇溶液中合成了1，3-丙二胺缩邻香兰素Zn-Sm异核双金属配合物。

By adopting the method of stepwise synthesis, this paper synthetizes 1,3 - diaminopropanein 2-Hydroxy-3-methoxybenzaldehyde Zn-Sm heteronuclear bimetallic in Anhydrous methanol solution.

本文采用分步合成的方法，在无水甲醇溶液中合成了1，3-丙二胺缩邻香兰素Zn-Sm异核双金属配合物。

The solid product was characterized by N2 adsorption-desorption, XRD, TEM and hydrothermal stability test. These results indicated that small amounts of HPMo in the synthesis media could reduce the amount of liquid in-organic acid and crystallization time greatly. And SBA-15 sieves prepared in this method exhibited an excellent hydrothermal stability, as its hexagonally ordered mesostructure was maintained after treated in 100 ℃ water over 72 h.

N2吸附-脱附、XRD、TEM和水热稳定性实验等检测结果表明：用这种方法不仅可以大幅度降低合成SBA-15分子筛所需液体酸的用量和缩短晶化时间，同时反应产物SBA-15在100 ℃的水中处理72 h后仍然保持六方有序的介孔结构。

The paper considers that urban planning methodology is composed with three parts. They are philosophy foundation, noetic methodology and operational methods. The philosophy foundation of urban planning methodology under the framework of multi-rationality composes of Marxist philosophy with materialistic dialectic and historical dialectic as the core, western philosophy such as humanism, verificationism, and historism etc., oriental philosophy centralized on synthesis and unison. The noetic methodology of urban includes micro logical noetic methods macro visual noetic methods and micro-macro creative noetic methods. The urban planning operational method includes the route, process and techniques needed in practice.

其中，城市规划方法的哲学基础是在总体的复合理性框架之下，由以辩证唯物主义和历史唯物主义为核心的马克思主义哲学，人本主义、实证主义、历史主义等西方哲学以及强调综合调和、天人合一的东方哲学思想所构成；城市规划思维方法体系，是城市规划过程中思考问题的角度及处理问题的方法论的总和，包括微观的逻辑思维方法、宏观的形象思维方法和宏微结合的创造性思维方；城市规划操作方法体系是直接用于城市规划实践的方法归纳和概括，包括城市规划的方法路线、程序组织、技术方法等等。

Results The synthesis condition was improved. The method of methane sulfonic acid/DL-methionine was found an ideal substitute of BBr3 for less cost. While using hydrobromic acid, the O-demethylation and hydrolyzation could be combined in one stage.

结果 优化了纳洛酮的合成工艺，甲磺酸／DL-甲硫氨酸法试剂价格低廉，可降低生产成本；而氢溴酸法不但试剂价格更低，还可将去氧甲基化和水解合并为一步反应，使新工艺的总收率提高到59.90%，产品质量符合中国药典。

A method for the synthesis of lappaconitine hydrobromide by the reaction of dibromoalkyl with lappaconitine is presented.

报道了以双溴代烷烃和刺乌头碱合成刺乌头碱氢溴酸盐的方法。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。