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- pyrone carboxylic acid 吡喃酮羧酸
- Carboxylic acid esters are important chemical raw materials. 羧酸酯是重要的化工原料。
- Sulfuric acid is main catalyst for the synthesis of carboxylic acid esters. 羧酸酯的合成主要用硫酸作催化剂，但这种催化剂有许多缺点。
- The scheme initially involves acylation of thiophene using a carboxylic acid to afford the acyl thiophene. 这条路线是先用羧酸使噻吩已酰化制得酸基噻吩。
- One exception is the decarboxylation of aromatic carboxylic acids. 芳香羧酸进行脱羧反应是一个例外。
- Carboxylic acid was peroxidized in organic solvents catalyzed by lipase and glycidol was synthesized from allyl alcohol catalyzed by acid peroxide. 摘要利用脂肪酶在有机介质中催化制备过氧酸，丙烯醇在过氧酸的作用下发生环氧化反应生成环氧丙醇。
- Nitric acid oxidation was found to reduce the surface hydroxyl (OH) groups in increasing the carboxylic acid (COOH) groups. 硝酸氧化减少了碳纤维表面的羟基含量，同时增加了碳纤维表面的羧基含量。
- In the reaction, some aniline is completely oxidized to CO2 or partially oxidized to carboxylic acid. 在反应中有一部分苯胺被完全氧化或部分氧化成CO2或羧酸，
- PVAC latex is prepared by the polymerization of the new type of ethylene carboxylic acid . 采用乳液聚合制备了新的丙烯酸改性的聚乙酸乙烯酯(PVAC)乳液。
- 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 formate activates the carboxylic acid and functions as a source of nucleophilic alkoxide. 羧酸甲酸激活的职能和核醇源泉.
- 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。
- Ingredients: Chamomile extract, hamamelis extract, pyrroldone carboxylic acid, HA, etc. 主要成份：春黄菊提取液，金缕梅提取液、吡咯烷酮羧酸、透明质酸等。
- Pyruvic acid A 3-carbon carboxylic acid (CH3COCOOH) that is an intermediate in GLYCOLYSIS. 丙酮酸：一种三碳羧酸(CH3COCOOH)，是糖酵解的中间物。
- FD is a kind of retanning agent condensated with glyoxal,formaldehyde,carboxylic acid and urea. 复鞣剂FD是一种由乙二醛、甲醛、羧酸衍生物、尿素等缩合而成的两性皮革复鞣剂。
- The last step is the oxidation reaction that converts the alkyne triple bond to carboxylic acid group. 通过对五种醛和三种末端炔进行的条件筛选，确立了通用合成方法。
- In this papev,is be explorated the capability of PVAC latex of ethylene carboxylic acid . 考察了丙烯酸改性的PVAC乳液的性能。
- The effect of potassium borohydride on ester and carboxylic acid reduction was introduced. 研究了硼氢化钾对酯和羧酸的还原作用。
- Using acid or pyridine as a catalyst,nitrogen aci3,4-diamino-3-cyclobutenedione)can be acylated by carboxylic acid,acetic anhydride and acyl chloride. 在酸或吡啶催化下，氮方酸（3，4－二氨基－3－环丁烯二酮）可被酰化试剂羧酸、醋酐和酰氯酰化；
- Stereoselective oxidative dimerization of the enolate of carboxylic acid derivatives is summarized focusing on the stereoselectivity of the process. 综述羧酸衍生物的烯醇盐氧化二聚成键的规律,重点是立体选择性的过程。
