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- tetrapyrrole carboxylic acids 四吡咯羧酸
- 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 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。
- Tbe carboxylic acids (oleic acid or oleate) remain important collectors in the fluorite flotation. 羧酸类(油酸或油酸盐)仍然是萤石浮选的主要捕收剂。
- REDOX Relationships amongst Alcohols, Aldehydes and Ketones and Carboxylic acids. 醇,醛与酮和羧酸之间的氧化还原关系。
- Amino acids contain both acids(carboxylic acids)and bases(amino group), so they react sith both acids and bases. 氨基酸包含酸(羧酸)和碱(氨基团)所以它既可以与酸反应也可以和碱反应。
- They are non-toxic compounds and harmlessness that are familiar binary carboxylic acids. 它们无毒无害,是常见的二元羧酸。
- 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。
- Decarboxylase An enzyme that catalyzes the decarboxylation of carboxylic acids, including the conversion of amino acids to amines. 脱羧酶:能够催化羧酸进行脱羧反应的酶,包括氨基酸转化为胺的反应。
- 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,
- L-Histidine (L-His) could be racemized in carboxylic acids used as solvents in presence of catalyst such as salicylaldehyde. 摘要L-组氨酸在醛的催化下,可在羧酸溶剂中发生消旋。
- 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。
- Aryl nitriles were obtained by the reactoin of the corresponding carboxylic acids with urea in the presence of sulfamic acid in solvent. 报道了芳羧酸在氨基磺酸存在下,在溶剂中同尿素反应生成芳腈的新的合成方法,并同熔融法的实验结果进行了对比。
- The alkali-treated "cage" polyamidoxime adsorbent (BCAO) possesses the high adsorptivity for the adsorption of carboxylic acids. 碱处理笼形聚偕氨肟树脂(BCAO)对羧酸表现出强的吸附能力。
- Rotundine was used as chiral auxiliary for NMR analysis of racemic carboxylic acids and it turned out to be an effective chiral solvating agent(CSA). 以罗通定为手性溶解剂,用核磁共振方法分析了几种外消旋羧酸。
- 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.