您要查找的是不是：
- ethyl acetoacetic acid 乙基乙酰乙酸
- Fructone was synthesized from ethyl acetoacetate and glycol using activated carbon supported phosphotungstic acid as catalyst. 以活性炭负载磷钨酸为催化剂合成了苹果酯,确定了反应的最优条件。
- A series of 12-phosphotungstic acid(PW)and their Cs salts catalysts supported on dealuminated ultra-stable Y zeolite(DUSY)were prepared. Their catalytic activities were measured by synthesis of fructone-B from ethyl acetoacetate and 1,2-propanediol. 制备了一系列以脱铝超稳Y沸石(DUSY)为载体的磷钨酸(PW)及其铯盐催化剂,考察了催化剂在以乙酰乙酸乙酯和1,2-丙二醇为原料催化合成草莓酯反应过程中的性能。
- Nefedipine was synthesized with m-Nitrobenzaldehyde, ethyl acetoacetate, animonium acetate. 摘要以间硝基苯甲醛，乙酰乙酸乙酯，氨化试剂为原料。
- A1_20_3 sol is prepared by using Al(O-sec-Bu)3 chelated with ethyl acetoacetate(EAcAc) as precursor. 本文以乙酰醋酸乙酯(EAcAc)螯合的异丁醇铝为前驱物制备出了A1_20_3溶胶。
- Keywords polyarylate;acetoacetic acid group;acetylizing; 聚丙烯酸酯;乙酰乙酸基团;乙酰化;
- Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate. 以间硝基苯甲醛,乙酰乙酸乙酯,氨化试剂为原料。
- METHODS Bropirimine was synthesized by 3 steps reaction of acylation, cyclization and bromination with ethyl acetoacetate as staring material. 方法以乙酰乙酸乙酯为起始原料,经酰化、环合、溴化3步反应合成溴匹立明。
- A new type of apple ester-B is synthesized by condensation reaction of ethyl acetoacetate and 1,2- propanediol,Using Fe 3+ -UR as catatlyst. 以Fe3 ＋ － UR 为催化剂，催化乙酰乙酸乙酯和1 ，2 － 丙二醇缩合反应合成了新型香料苹果酯－ B。
- With 1,4-bezenoquinone and ethyl acetoacetate as the starting materials, it had been prepared in a novel six-step procedure in overall yield of 34.6%. 以1，4-苯醌和乙酰乙酸乙酯为起始原料，经新的六步反应过程，合成阿比朵尔，总收率为34.;6%25。
- The strongly acidic cation exchange resin catalyzed synthesis of fructone-B by the reaction of ethyl acetoacetate and 1,2-propanediol was studied. 采用强酸性阳离子交换树脂为催化剂,以乙酰乙酸乙酯、1,2-丙二醇为原料合成苹果酯-B。
- Fructone-A and Fructone-B was synthesized from ethyl acetoacetate and ethanediol or 1,2-propanediol using ammonium ceric sulfate as catalyst. 以硫酸高铈铵为催化剂,通过乙酰乙酸乙酯分别与乙二醇和1,2-丙二醇反应合成了苹果酯-A和苹果酯-B,研究了催化剂等有关因素对产品收率的影响。
- The resulted IR Spectrum makes it possible to determine the reaction mechanism of ethyl acetoacetate with tetra butyl titanate. 得到的红外光谱使其决定钛酸四丁酯与乙酰乙酸乙酯的反应历程。
- Optically active ethyl(S)-3-hydroxybutyrate,a useful chiral synthon,was prepared by stereoselective reduction of ethyl acetoacetate of the bread yeast in organic solvent. 利用面包酵母在非水相中不对称还原乙酰乙酸乙酯,制备了光学活性的手性化合物S()-3-羟基丁酸乙酯。
- The fraistone of new type perfume was synthesized with ethyl acetoacetate and 1,2 - propanediol as raw materials by the novel catalyst of polymer compound (FeCI3 - AICI3 - UR). 以乙酸乙酸乙酯和1，2一丙二醇为原料，在新型高分子复合催化剂FeCI3－AICI3－UR的催化作用下合成了新型香料草莓酯。
- Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents. 本文以紫外光谱为手段研究乙酰乙酸乙酯的酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性的增加而减少。
- Edaravone, a free radical scavenger, was synthesized by condensation of ethyl acetoacetate withphenylhydrazine in presence of NaHSO3 in water at pH 6 for 2h in a yield of 83%. 用苯肼和乙酰乙酸乙酯在亚硫酸氢钠参与下于水中回流反应2h制得自由基清除剂依达拉奉,收率83%25。方法操作简单,成本低。
- Benzoyl chloride and ethyl acetoacetate react and hydrolyze in the presence of a catalyst to synthesize ethyl benzoylacltete,yielding 60%,with a purity of more than 98%. 苯甲酰氯与乙酰乙酸乙酯催化水解合成苯甲酰乙酸乙酯。收率60%25，产品纯度98%25以上。
- METHODS We used ethyl acetoacetate as the starting material to prepare sodium houttuyfonate successfully via a three-step procedure resulting in the total yield of 30%. 方法以乙酰乙酸乙酯为原料，经取代、碱水解及脱羧制得关键中间体甲壬酮；
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
