ethyl acetoacetate
英
美
乙酰乙酸乙酯
双语例句
- 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。 - The synthesis of6-methyluracil from ethyl acetoacetate and urea with PEG-400 as phase transfer catalyst was studied.
研究了聚乙二醇-400为相转移催化剂，乙酰乙酸乙酯和尿素合成6-甲基脲嘧啶的工艺条件。 - Synthesis of ketals of ethyl acetoacetate catalyzed by active carbon supported heteropoly acid under microwave irradiation
微波辐射活性炭负载杂多酸催化合成乙酰乙酸乙酯缩酮 - Using ethyl acetoacetate as an ligand, the pinacol coupling of some aromatic aldehydes mediated by TiCl_4-Al in CH_2Cl_2 had good chemoselectivity and diastereoselectivity.
在CH2Cl2中，以丙二酸二乙酯为配体，与TiCl4-Al组成的诱导体系对一些芳香醛的片呐醇偶联反应有好的化学选择性和非对映立体选择性。 - Study on the reaction mechanism of ethyl acetoacetate with tetra butyl titanate by infrared spectroscopy
用红外光谱研究钛酸四丁酯与乙酰乙酸乙酯的反应历程 - The yield of Michael reaction of Ethyl acetoacetate and Crotonaldehyde catalyzed by KF/ r-Al2O3, MgO/ r-Al2O3, MgO/ NaY all can reach to 80% and the latter can reach to 90%.
用微波法制备的KF／γ-Al2O3，MgO／γ-Al2O3和MgO／NaY催化剂催化乙酰乙酸乙酯与巴豆醛Michael加成反应时产率都可达到80%以上，其中后两者的产率达90%。 - A Study on Asymmetry Reduction of Ethyl Acetoacetate of Bread Yeast in Organic Solvent
面包酵母非水相催化乙酰乙酸乙酯的不对称还原反应 - Fructone was synthesized from ethyl acetoacetate and glycol in the presence of SO_4~ ( 2-)/ TiO_2-MoO_3-La_2O_3.The factors influencing the synthesis were discussed and the best conditions were found out.
以稀土改性固体超强酸SO42-/TiO2-MoO3-La2O3为多相催化剂，对以乙酰乙酸乙酯和乙二醇为原料合成苹果酯的反应条件进行了研究。 - Effect of Ethanol on the Tautomerism of Ethyl Acetoacetate in Supercritical Co_2
乙醇对超临界CO2中乙酰乙酸乙酯异构化平衡的影响 - Leflunomide, a new antirheumatoid arthritis drug was synthesized from the starting material ethyl acetoacetate, triethyl orthoformate, acetic anhydride, etc. Synthesis of acetoacetate esters using a new catalyst& triethylamine
以乙酸乙酯、原甲酸三乙酯、乙酸酐等为起始原料经缩合、环化等五步反应合成了新型免疫调节抑制剂抗类风湿性关节炎新药来氟米特.用新型催化剂三乙胺合成乙酰乙酸酯 - Hydroxy 4 methyl coumarin was prepared from resorcinol, ethyl acetoacetate or methyl acetoacetate in the presence of solid superacid catalyst.
在固体超强酸的催化下以间苯二酚、乙酰乙酸乙酯或乙酰乙酸甲酯为原料，合成了7-羟基-4-甲基香豆素。 - ? Methyl ethyl acetoacetate was synthesized by enamine alkylation, which was compared with water process method.
本文报道了α－甲基乙酰乙酸乙酯的烯胺法合成，探讨了烯胺法与水法的不同。 - A New Synthesis Method of Ethyl Acetoacetate
乙酰乙酸乙酯合成新方法 - METHODS New territrem B analogues 10a~ 10l with the common structure of 2H-pyran-2-one were designed and synthesized from ethyl acetoacetate.
方法以乙酰乙酸乙酯为起始物，设计合成了含2H-吡喃-2-酮结构的化合物10a~10l； - Synthesis of α-Methyl Ethyl Acetoacetate by Enamine Alkylation
烯胺法合成α－甲基乙酰乙酸乙酯 - 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。通过转化率和ee。 - Alumina aerogels of light nano mesoporous solid material are prepared from Al, n-butanol and ethyl acetoacetate by the sol-gel rute and the N_2 supercritical drying technique. Also, their photoluminescence properties are studied.
以铝、正丁醇、乙酰乙酸乙酯（EtAC）为原料，采用溶胶-凝胶法和N2超临界干燥技术制备出轻质纳米介孔固体Al2O3气凝胶，并对其光致发光特性进行了研究。 - Catalytic Performance of Phosphotungstic Acid ( Salt) Supported on SiO_2 for Acetalization of Ethyl Acetoacetate with Glycol
SiO2负载磷钨酸（盐）催化剂对乙酰乙酸乙酯与乙二醇缩合反应的催化性能 - Synthesis of Ethyl Acetoacetate Cyclic Propylene-1,3 Ketal by Catalyst Iodine
碘催化合成乙酰乙酸乙酯1,3-丙二醇缩醛 - Ethyl acetoacetate was chosen as the model substrate. The effects of heating temperature and heating time during the pretreatment of baker 'yeast cells on the conversion and stereoselectivity of the reduction reaction were investigated.
并且选取乙酰乙酸乙酯为底物，进一步研究了加热预处理温度和时间对面包酵母还原乙酰乙酸乙酯转化率及ee值的影响。 - In the third chapter, a rapid and efficient method for the synthesis of coumarins from phenols with ethyl acetoacetate or methyl acetoacetate is described in the presence of zirconium sulfate tetrahydrate-silica gel under microwave irradiation.
第三部分：该部分介绍了微波辐射硅胶负载的四水硫酸锆催化，酚与乙酰乙酸甲酯或乙酰乙酸乙酯作用合成香豆素的方法。 - In this paper, the synthesis process of acetylacetone has been studied, using ethyl acetoacetate and acetic anhydride as raw materials,. magnesium oxide as catalyst.
本文研究了以乙酰乙酸乙酯和乙酸酐为原料、氧化镁为催化剂，合成乙酰丙酮的工艺。 - The enolization of ethyl acetoacetate was the key step of the reaction.
乙酰乙酸乙酯的烯醇化是反应进行的关键步骤。