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- The recent progress in the activation and reaction of carboxylic anhydride as well as the catalytic, halide-free processes for the preparation of aldehydes or ketones directly from corresponding carboxylic acids was reviewed. 摘要综述了钯催化的酸酐碳一氧键的活化和反应，及由羧酸直接制备相应的醛、酮且不需要卤原子和碱参与的方法。
- carboxylic anhydride 羧酸酐
- An anhydride formed by the removal of a water molecule from the hydroxyl and carboxyl radicals of hydroxy acids. 内酯一种通过从酸的羧基中除去一个水分子而形成的脱水物
- 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；
- Carboxylic crosslinked polystyrene(PS-COOH) microsphere has been prepared by Friedel-Crafts acylation with phthalic anhydride. 选用邻苯二甲酸酐以傅克酰基化反应制备了聚苯乙烯(PS)羧基化弱酸性离子交换树脂。
- Synthesis of acyl azide from aldehyde, or acylhydrazine, or carboxylic acid ,or acyl chlo-ride, or anhydride,or ester is introduced in this paper. 介绍了由醛、酰肼、羧酸、酰氯、酐或酯合成酰基叠氮化合物方法。
- Containing two carboxyl groups per molecule. 二羧基的每个分子中含有两个羧基的
- The pH is equal to the of the carboxyl group. 等于羧基pKa的pH
- One exception is the decarboxylation of aromatic carboxylic acids. 芳香羧酸进行脱羧反应是一个例外。
- Scale inhibition property of PASP was improved by introducing carboxyl group to main chain during copolymerizing of citric acid, malay anhydride and ammonia. 将柠檬酸、马来酸酐、氨共聚,在主链上引入羧基以改性聚天冬氨酸,提高了其阻垢性能。
- Influence of pH on Yield of DPT Prepared Without Acetic Anhydride. 非醋酐法合成DPT与pH值的关系
- Subject to control the chemicals acetic anhydride, ephedrine etc. . 受管制化学品乙酸酐、麻黄碱等.
- Hexahydro-4-methylphthalic anhydride, mixture of cis an... 询价 六氢-4-甲基邻苯二甲酸酐；
- The introduction of a carboxyl group into a compound or molecule. 羧化把一个羧基引入一个化合物或一个分子
- Carboxylic acid esters are important chemical raw materials. 羧酸酯是重要的化工原料。
- These sites include, carboxyl, epoxy, amino and the like. 这些部位包括羧基、羰基、环氧基和氨基等。
- Any of various enzymes that hydrolize the carboxyl radical. 脱羧酶酶的一种,可水解羧基酸。
- Epoxy resin toughened by carboxyl nitrile rubber exhibits good... 羧基丁腈橡胶增韧的环氧树脂胶表现出良好的拉伸剪切性能。
- These sites include, carboxyl, epoxy, amino and the like . 这些部位包括羧基、羰基、环氧基和氨基等。
- Add the crystalline dihydrate(5g)to acetic anhydride(10??in a beaker. 向盛有10?蟠姿狒?的烧杯内加入5g二水合物结晶。
