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- Some coumarin derivatives are synthesized from corresponding phenols through condensation with acetylacetic ester under microwave irradiation,with catalytical amount of phosphoric acid being added. 用磷酸作催化剂,采用微波辐射方式,以酚类化合物和乙酰乙酸乙酯为原料进行缩合反应,合成香豆素衍生物。
- REACTION OF CYCLOKETONE,ACETYLACETONE AND ACETYLACETIC ESTER WITH KETENE OR ACETIC ANHYDRIDE IN THE PRESENCL OF COPPER SULFATE 硫酸铜催化下乙烯酮、乙酐与环酮、戊二酮及乙酰乙酸乙酯的反应
- acetylacetic ester 乙酰乙酸酯,(专指)乙酰乙酸乙酯
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- A natural or synthetic ester of glycerol and fatty acids. 甘油酯以甘油和脂肪酸天然存在的或合成的酯
- A salt or an ester of lactic acid. 乳酸盐或乳酸酯
- A salt or an ester of titanic acid. 钛酸盐钛酸的盐或酯
- A salt or ester of hypochlorous acid. 次碳酸盐一种次碳酸的盐或酯
- Ester asked for time to think all this over . 埃斯特拉要求给她时间好好想一想。
- Ester asked for time to think all this over. 埃斯特拉要求给她时间好好想一想。
- A salt or an ester of malic acid. 一苹果酸的盐或酯
- A salt or an ester of oxalic acid. 草酸盐草酸的盐或酯
- A salt or ester of arsenic acid. 砷酸盐,砷酸酯
- A salt or an ester of pantothenic acid. 泛酸盐,泛酸脂泛酸的盐或脂
- A salt or an ester of propionic acid. 丙酸盐丙酸的一种盐或脂
- A salt or ester of aspartic acid. 天门冬胺酸盐,天门冬胺酸酯一种天门冬胺酸盐或脂
- A salt or ester of barbituric acid. 巴比妥酸盐,巴比妥酸酯
- An ester or a salt of perchloric acid. 高氯酸盐
- The acid ewolises nearly as well as the ester. 此酸的烯醇化几乎象酯一样良好。
- To change or cause to change to an ester. 酯化,使酯化变化或被变化成酯