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- ethyl acetoacetic ester 乙基乙酰乙酸酯
- Aluminum di(sec-butoxide)acetoacetic ester chelate, tech.,... 询价 二仲丁氧基乙酰乙酸铝；
- Objective To determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of Edaravone,by gas chromatography. 目的:用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量。
- This paper reports the function of anhydrous potassium fluoride and acetonitrile in C-alkylation of active methylene group of acetoacetic ester. 无水氟化钾和乙腈在乙酰乙酸乙酯活泼亚甲基的C-烃基化中的作用。
- The cyctic Condensation Carbonyl Perfume-Fructone is synthesized by the condensation reactions between acetoacetic ester and ethylene glycol with activated carbon supported phosphoric acid as catalyst. 以活性炭固载H_3PO_4为催化剂,用乙酰乙酸乙酯与乙二醇为反应物直接缩合,制备了环缩羰基型香料-苹果酯。
- 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。
- 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。
- ethyl sodio acetoacetic ester 乙基钠代乙酰乙酸酯
- Keywords diketen;acid base catalysis;acetoacetic ester; 二聚乙烯酮;酸碱催化;乙酰乙酸酯;
- 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。
- 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。
- 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。
- Study on Catalysis Synthesis of Acetoacetic Ester Cyclic Ethylene Ketal 乙酰乙酸乙酯环乙二缩酮的催化合成研究
- 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。
