1·Screening for 2 - bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.
筛选以2 -溴代丁酸为起始原料，经氨解，酯化，酯胺解，拆分，环合五步反应制得左乙拉西坦。
2·The paper introduces the catalyst research advances in esterification reaction of carboxylic acid.
本文介绍了羧酸酯化反应催化剂的研究进展。
3·This paper reports the study on the sulfonated polystyrene resin used in esterification, transesterification, synthesis of acetals or ketals, synthesis of ether and rearrangement reaction of pinacol.
本文研究了磺酸化的聚苯乙烯树脂在酯化、酯交换、缩醛或缩酮的合成、醚的合成及(口片)呐重排反应中的应用。
4·At the same time the esterification of black rice pigment was analysed by infrared spectrum, visible spectrum and solubility.
同时通过红外光谱、可见吸收光谱及溶解性对黑米色素的酯化进行了初步探讨。
5·The structural character of zeolite solid acid and zeolite solid-Superstrong acid and their application in esterification reaction systems are presented.
介绍了沸石分子筛固体酸和固体超强酸的结构特征及其在酯化反应体系中的应用。