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异丙酯
    Use of TBAB as phase trasfer catalyst on the estcrification of isopropyl acetate was studied. The optimized conditions are as following: the weight of catalyst is 0. 38 g/0. 1 mol acetic acid, the mole ratio of alchol to acid is 1 : 2 and the reaction time is 1h. The chemical yield was87. 2%.
    利用相转移催化剂四丁基碘化铵(TBAB)催化合成乙酸异丙酯,最佳反应条件如下:催化剂用量0.38 g/0.1 mol乙酸,醇酸比1:2,反应时间1 h,收率87.2%.
    The process of batch reactive distillation for the synthesis of isopropyl acetate with acetic acid and isopropyl alcohol was studied. The optimum operating conditions which were obtained through the orthogonal design were as following: the reflux ratio was 3, the mole ratio of acid to alcohol was 1∶1.5, the catalyst concentration was 2%, the reaction time was 1.5 h. the yield of isopropyl acetate was up to 92.8%.
    以乙酸和异丙醇为原料通过间歇式反应精馏合成乙酸异丙酯,正交实验给出最佳合成条件为:回流比3、反应时间1.5h、乙酸与异丙醇的物质的量比1∶1.5、催化剂用量为乙酸体积2%,乙酸异丙酯的最大收率为92.8%。
    Meanwhile, the optimum operation conditions are obtained by orthogonal experiment and are as follows: microwave power is 480 W, irradiation time is 80 min, the amount of catalyst is 4.0 g5mol~(-1), molar ratio of acid to alcohol is 2.0, the yield of isopropyl chloroacetate is 64.1 %.
    通过正交实验得出合成氯乙酸异丙酯的最佳工艺条件:微波功率为480W,加热时间为80min,催化剂的用量为4g·mol-1,n(酸)∶n(醇)=2∶1,此条件下氯乙酸异丙酯的产率为64.1%;
    Complex inorganic salt Fe_2(SO_4)_3-K_2S_2O_8 was used as catalyst for the synthesis of isopropyl chloroacetate.
    以复合无机盐Fe2(SO4)3 K2S2O8为催化剂合成了氯乙酸异丙酯
    In esterification of undecylenic acid with isopropyl alcohol,Cs_(2.5)H_(0.5)PW_(12)O_(40)/SBA-15 as catalyst,was more active than microporous molecular sieve catalysts,such as ZSM-5 and β.
    将该催化剂用于合成十一碳烯酸异丙酯,与其它几种微孔分子筛催化剂相比,介孔分子筛负载磷钨酸酸式铯盐Cs2 5H0 5PW12O40/SBA-15催化剂的性能最好。
    2) 2- thiopheneethamine is prepared from thiophene by Vilsmeierreaction, and with isopropyl chlorocetate by Darzens reaction, then reduced by 2-thienylacetaldehyde;
    二是以噻吩为原料经过Vilsmeier反应后,与氯乙酸异丙酯进行Darzens反应,然后对产物2-噻吩乙醛进行还原得到2-噻吩乙胺;
    Nimodipine was synthesized from 3-nitrobenzaldehyde by condensation with 2-methoxyethyl aceto- acetate using Ac2O/H2SO4 as catalyst to obtain 2-methoxyethyl 2-(3-nitrobenzylidene)acetoacetate, which subjected to cyclization with isopropyl 3-aminocrotonate in presence of concentratedhydrochloricacid in ethanol with an overall yield of 80%.
    间硝基苯甲醛和乙酰乙酸2-甲氧基乙酯在乙酸酐-浓硫酸催化下缩合得到2-(3-硝基亚苄基)乙酰乙酸2-甲氧基乙酯,再在浓盐酸催化下与3-氨基丁烯酸异丙酯在乙醇中闭环得到尼莫地平,总收率80%。
    Isopropyl N-benzoyl-(2R,3S)-3-phenylisoserine, a side chain precursor of paclitaxel, was synthesized from isopropyl trans-cinnamate and N-bromobenzamide by osmium-catalyzed asymmetric aminohydroxylation reaction in the presence of new chiral ligands 3 or 4 in yields of 41.2% and 43.6%, respectively. The enantiomeric excess of both were 97%.
    用反式肉桂酸异丙酯为原料,N-溴代苯甲酰胺为助氧化供氮试剂,分别在配体3、4存在下进行锇催化的不对称氨羟化反应,一步制得抗癌药紫杉醇的C13片段N-苯甲酰基-(2R,3S)-3-苯基异丝氨酸异丙酯,收率分别为41.2%和43.6%,对映体过量(ee)均为97%。
    Detect butane ,butanone ,acetic acid isopropyl by headspace sampling gas chromatography in the water. The limit of determination is 61μg/L for butane,40μg/L for butanone,12μg/L for acetic acid isopropyl ester.
    采用静态顶空气相色谱法同时测定水中正丁烷、丁酮、醋酸异丙酯,最低检出限分别为正丁烷61μgL、丁酮40μgL、醋酸异丙酯12μgL。
    Using SnCl4·5H2O as catalyst, isopropanol and p-hydroxybenzoic acid as raw materials, isopropyl p-hydroxybenzoate was prepared via direct esterification.
    以SnCl4·5H2O为催化剂、异丙醇和对羟基苯甲酸为原料,直接酯化合成了对羟基苯甲酸异丙酯
    Conclusion: 1 % of Carbomer 940,67% of ethanol and isopropyl myristate were the optimum matrix of testosterone gel.
    结论:以1.0%卡波姆940,67%的乙醇和肉豆蔻酸异丙酯为基质的处方最佳。
    METHODS Using dissolved chloramphenicol palmitate in isopropyl palmitates as oil phase,lecithin and tween-80 as surfactant and alcohol as cosurfactant to prepare O/W microemulsion.
    方法用十六酸异丙酯溶解棕榈氯霉素作油相,卵磷脂和吐温80混合作为表面活性剂,乙醇为助表面活性剂,制备O/W型微乳制剂; 用高效液相色谱法进行棕榈氯霉素含量的测定。
    Isopropyl chloroacetate is synthesized from chloroacetic acid and isopropyl alcohol with rare earth solids upper acid SO42-/ TiO2/ La3+ as catalysts under the irradiation of microwave.
    在微波辐射下,以稀土固体超强酸SO42-/TiO2/La3+为催化剂合成氯乙酸异丙酯
    The optimum operation conditions are obtained by experiment and are as follows: the mole ratio of chloroacetic acid and isopropyl alcohol is 1:2.5(mol / mol),the amount of catalyst is 0.5 g,irradiation power 729 W,reaction time 12 min. Under above conditions,95.4% of chloroacetic acid is converted,the yield chloroacetates is 89.4%.
    通过实验得出合成氯乙酸异丙酯的最佳反应条件是:氯乙酸和异丙醇的物质的量比为1∶2.5,催化剂用量为0.5g,微波输出功率为729W,反应时间为12min,在此反应条件下,氯乙酸的酯化率为95.6%。
    n(C_3H_6)∶n(CH_3COOH)=3∶1.Under these conditions,the yield of isopropyl acetate is up to 68.9%.
    n(C3H6)∶n(CH3COOH)=3∶1。 在此条件下,乙酸异丙酯的产率最高可达68.9%。
    Quantum chemical calculations at the HF/6-31G* and B3LYP/6-31G* levels have been carried out on five explosive sensitizers: ethyl nitrate (EN), n-propyl nitrate (NPN), isopropyl nitrate (IPN), 2-ethylhexyl nitrate (EHN), and tetraethylene glycol dinitrate (TEGDN). Theoretical studies have yielded a wealth of quantum chemical information on the molecular geometries, electronic structures, and energies of the title compounds.
    在HF/6-31G*和B3LYP/6-31G*基组水平上,对硝酸乙酯(EN)、硝酸正丙酯(NPN)、硝酸异丙酯(IPN)、硝酸异辛酯(EHN)和四甘醇二硝酸酯(TEGDN)五种炸药敏化剂进行理论计算,研究了标题物的分子结构、电子结构和能量等方面的性质.
    Optimum reaction condition was obtained as follows: reaction temperature 140 ℃,reaction pressure 1.2 MPa,space velocity(LHSV) 1 h-1,n(C3H6)∶n(CH3COOH)=3∶1.Isopropyl acetate yield of up to 79.6% was obtained under the optimum condition.
    对反应条件进行系统地考察,得出最佳反应条件:反应温度140℃,反应压力1.2 MPa,空速1 h-1,n(C3H6)∶n(CH3COOH)=3∶1。 在此条件下乙酸异丙酯的产率最高可达79.6%。
    Synthesis of isopropyl chloroacetate were studied using chloroacetic acid and isopropanol as the reactants and SO42-/TiO2 solid super acid prepared by nanoparticle anatase titania powder as the catalyst.
    研究了以氯乙酸和异丙醇为原料、锐钛晶型纳米TiO2粉体制备的固体超强酸SO42-/TiO2为催化剂合成氯乙酸异丙酯
 

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