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Three ways leads to the synthesis of fenclorin, one way discussed here has 3 steps. Stepl :benzonitrile using as raw material goes though dry hydrogen chloride and becomes a-imino phenylmethyl ether after meet carbinol.

解草啶的合成主要有三条路线,本文选取合成路线是以苯甲腈为原料,经三步反应而成:1、苯甲腈在干燥的氯化氢通入,与甲醇形成亚氨基苯甲醚,通入氨气后置换甲氧基得到苯基脒盐酸盐(收率76.18%)。2、苯基脒盐酸盐在碱性条件下与丙二酸二乙酯环合而得嘧啶醇(收率84.39%)。3、嘧啶醇在三氯氧磷中羟基被氯化得到产品解草啶(收率87.29%)。

In this paper reported a new technology of preparing butyl gallate from sodium gallate and n-chlorobu-tane.

报道了由没食子酸钠和氯代正丁烷合成没食子酸丁酯的新工艺。

The differences of electric mechanism, phase behavior and high temperature stability of cyhalothrin drug-loading microemulsion were investigated when the dodecyl benzenesulfonic salts combined with five coherer counter-ions and polyoxyethylene styrenyl ether were mixed at the same molar ratio.

将十二烷基苯磺酸盐和苯乙烯化苯酚聚氧乙烯醚按摩尔比1∶1混合后,结合5种金属反离子配成增溶高效氯氟氰菊酯的载药微乳体系,研究其在导电机理、相行为及热贮稳定性上的差异。

Herein, we report the enantioselective total syntheses of slagenins A-C and their antipodes. Starting from readily available ethyl -4-chloro-3-hydroxy-butanonate, elongation of the carbon chain with diazomethane, followed by oxidation of the given α-diazoketone using distilled DMD, afforded a key intermediate α-ketoaldehyde .

本文从方便易得的-4-氯-3-羟基-丁酸乙酯出发,经重氮甲烷延伸碳连、DMD氧化相应的α-重氮酮,制得α-酮醛;该化合物与尿素在氢氟酸作用下,以协同方式非对映选择性的直接构建了cis-四氢呋喃并[2,3-d]咪唑啉-2-酮双环结构,进而合成了天然产物slagenins A、B、和C的对映体。

The new surfactant was synthesized from the main starting materials such as lauric acid, p-cresol, chlorosulphonic acid and ethylene diamine, by 5 classic reactions which are acyl chlorination, esterification, Fries rearrangement, sulfonation and condensation, with total yield of 58%.

作者以十二酸、对甲酚、氯磺酸、乙二胺等为主要原料,共采取了酰氯化、酯化、Fries重排、磺化和缩合等5步经典的单元反应,合成了该表面活性剂,总收率为58%,并探讨了各步反应的条件对收率的影响。

Sodium5sulfoisophthalic acid dimethyl ester was prepared by sulfonation of mC 6H 4 2 with chlorosulphonic acid , treatment of the 5sulfoisophthalic acid with methanol to esterify the -CO 2H groups and separation of the product in the form of sodium salt of sulfonic acid.

研究了由氯磺酸和间苯二甲酸经磺化及酯化反应合成间苯二甲酸二甲酯磺酸钠盐的工艺方法,探讨了投料比、反应温度、催化剂用量和反应时间对产物的影

A new aroma compound,furfuryl thiopropionate was synthesized using furfuryl thioalcohol and propionyl chloride as raw materials,with calcium oxide and sodium carbonate as acid-capturer.

以糠硫醇和丙酰氯为原料,用氧化钙和碳酸钠为复合缚酸剂,合成了香料硫代丙酸糠酯,并用IR、元素分析等进行了表征。

The reaction of [60] fullerene with dimethyl malonate and diethyl malonate in the presence of manganese acetate dihydrate for 20 min afforded singly bonded [60] fullerene dimers in a 1, 4-addition pattern.

Mn作为一类良好的自由基引发剂,能有效地催化C〓与丙二酸二甲酯和丙二酸二乙酯的自由基加成反应,生成C〓的二聚体。在回流的氯苯中随着时间的的延长,二聚体分解成1,4-双加成的C〓衍生物。

Study on the Effect of Azone on Percutaneous Absorption of Clindamycin Hydrochloride in Cream;2. OBJECTIVE To observe the effects of three transdermal enhancers( azone ,isopropyl myristate,oleic acid) in vitro under the condition of iontophoresis with diclofenac sodium as the model drug.

方法选择聚乙烯醇、聚乙烯吡咯烷酮、羟丙甲基纤维素为基质,制备了分别含有月桂氮酮、肉豆蔻酸异丙酯和油酸的双氯芬酸钠经皮离子导入凝胶,采用改良Franz纵向释放池,以人体皮肤为透皮屏障,进行药物凝胶的离子导入经皮试验。

Lithium perfluoroalkylphosphonate was synthesized by LiF and perfluoroalkylphosphonate acid obtained by electrochemically fluorinating chlorodiisopropylphosphine. Some properties of a kind of electrolyte that was made from dissolving the lithium perfluoroalkylphosphonate in the mixed solvent with ethylene carbonate and dimethyl carbonate mass ratio 1∶1 were investigated, such as conductivity, stability toward hydrolysis and oxidative decomposition potential, and so on.

选取氯代二异丙基膦(C6H14PCl)为原料,利用电化学氟化方法,得到全氟烷基膦酸[(C3F7)2PF3],(C3F7)2PF3与氟化锂反应得到全氟烷基膦酸锂Li[(C3F72PF4],将其溶于碳酸乙烯酯和碳酸二甲酯质量比为1∶1的混合溶剂中得到电解液,考察电解液的电导率、抗水性及氧化分解电位。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

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