维生素C催化合成阿司匹林的条件研究--(制剂与技术) 关键词] 维生素C;合成条件;阿司匹林;研究 [gap=725]Key words] Vitamin C; Synthesis condition; Aspirin; Research
基于70个网页-相关网页
...Y2O3；粒度；形貌；合成条件；影响因素 [gap=749]Key words TEM; Y2O3 nanopowder; diameters; shapes; condition of synthesis; influence factors ...
基于12个网页-相关网页
... Object Composing 形体合成 ; 形体合成 phototype composing 照相排字 composing conditions 合成条件 ; 构成条件 ; 构成要件 ...
基于6个网页-相关网页
The synthetic condition for the intermediates and target compounds were optimized.
对目标化合物及其中间体的合成条件进行优化。
参考来源 - 新型喹唑啉衍生物的合成与生物活性研究This paper also deals with the synthetical progress of O,O-dimethyl-a-hydroxyethyl-phosphonates which is a key intermediate of substituted phenoxy acetoxy alkyl phosphonates. The synthetical condition of O,O-dimethyl-a-hydroxyethyl phosphonates was studied and the optical reaction condition were summed up.
另外，本论文对具有除草活性的取代芳氧基乙酰氧基烃基膦酸酯合成的关键中间体O，O-二甲基-α-羟基乙基膦酸酯的合成条件进行了系统的研究和筛选，探讨了各种因素对O，O-甲基-α-羟基乙基膦酸酯合成反应收率以及含量的影响，提出合成反应的优化条件。
参考来源 - 取代苯氧基苯甲酰胺类衍生物的研究The influences of reaction time,temperature,raw materials ratio,the quantity of catalyst and recycling use performance of the catalyst on the yield of product were investigated. The optimal technological condition was also obtained.
以对羟基苯甲酸和醇为原料,分别用磺酸树脂、氨基磺酸作催化剂,合成了系列对羟基苯甲酸酯,考察了反应温度、反应时间、物料比、催化用量及循环使用等因素对产品产率的影响,得到了较佳的合成条件;比较了几种磺酸类催化剂的催化活性。
参考来源 - 对羟基苯甲酸酯的催化合成与HPLC分离分析的比较研究The synthesis conditions of preparation of other carbon chain length of fatty-2-lactylateare based on the synthesis conditions of sodium stearoyl-2-lactylate.
以硬脂酰乳酸钠的合成条件为依据制备其他碳链长度的脂肪酰乳酸钠。
参考来源 - 不同碳链长度脂肪酰乳酸钠的合成及在馒头中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
此外，因为合成条件的局限和异质晶体的原因，关于磁性X型沸石的报道尚属首例。
In addition, Reports about magnetic X zeolites have not been previously reported because of the hard synthesis condition and foreign crystals.
本研究开发的碱式氯化镁晶须具有原料廉价易得、合成条件温和以及操作简单的特点。
The basic magnesium chloride whisker that is synthesized in this experiment has the character of the low cost, the mild conditions and easy operation.
结合实际情况，选择适宜的合成条件，对含有DM16疏水单体的三元聚合物，合成了两个系列聚合物。
Two kinds of polymers are synthesized with ternary polymers which contain DM16 hydropHobic monomers on appropriate condition combining practice.
应用推荐