pinacol
英
美
n. 频哪醇
双语例句
- In aprotic solvents magnesium effects pinacol reductive coupling of aldehydes and ketones.
在非质子性溶剂，镁对频纳醇与醛和酮的还原耦合反应也有一定效果。 - New methods for asymmetric synthesis of pinacol are reviewed, the catalytic effects and stereoselectivity with various catalytic systems are discussed in this paper.
综述了近年来不同催化体系的不对称合成呐醇的方法，并总结了不同的催化效率和对映选择性的差异。 - Solventless Pinacol Rearrangement Catalyzed by FeCl_3 under Microwave Irradiation
微波辐射FeCl3催化无溶剂条件下的呐醇重排 - Stereoelectronic Effect in Pinacol Rearrangement Reactions of Cyclohexanediol
环己二醇发生频哪醇重排反应的立体电子效应 - 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。 - Kinetics of pinacol rearrangement in high temperature liquid water
高温液态水中的频那醇重排反应动力学 - Progress in pinacol coupling of aldehydes and ketones using low valent titanium is reviewed in recent years.
文章综述近几年来由低价钛还原偶联醛酮合成片呐醇的进展。 - Pinacol coupling reaction induced by low valent titanium has higher chemoselectivity and stereoselectivity, and has increasing attracted organic chemists in recent years.
由低价钛络合物诱发的片呐醇偶联反应，具有良好的化学选择性和立体选择性，近几年来又引起有机化学家们的极大兴趣与重视。 - Studies on the Stereoselectivity of Pinacol Coupling Reaction Mediated by TiCl_4-Mg
TiCl4-Mg介导的立体选择性的频哪醇偶联反应研究 - The effects of temperature, reaction time, amount of catalyst and polarity of solvent on the catalytic properties were also investigated. The conversion of pinacol and selectivity of pinacolone were improved by increasing reaction temperature, prolonging reaction time and increasing amount of catalyst.
反应温度、反应时间、催化剂用量和溶剂对pinacol重排反应有很大的影响提高反应温度、延长反应时间和增加催化剂的用量，均可提高pinacol的转化率和pinacolone的选择性。 - LVT Induced Pinacol Coupling under Ultrasound Irradiation
超声辐射下低价钛诱发的片呐醇偶联 - Electrosynthesis of Pinacol by using Zu-PTFE Composite Electrode
以Zn-PTFE复合电极电合成频那醇 - Studies on the Knoevenagel Reaction and Pinacol Coupling Reaction Under Ultrasonic Irradiation
超声波辐射下，Knoevenagel反应和片呐醇合成反应的研究 - The Study of Rearragement Reaction of Pinacol
呐咵醇重排反应的研究 - New Development of Pinacol Reaction by Reductive Coupling Carbonyl Compounds
羰基化合物还原偶联为（口+片）呐醇反应的研究新进展 - Based on the reported pinacol coupling of aldehyde and ketone mediated by low valent vanadium or titanium, some new reaction systems or methods were explored to improve the chemoselectivity and stereoselectivity of pinacol coupling.
本文在总结利用低价钒、钛诱导醛酮发生片呐醇偶联反应的基础上，寻求新的反应体系或方法，以提高片呐醇偶联反应的化学选择性和立体选择性。 - Part 2: Pinacol coupling of aromatic aldehydes mediated by Zn powder in acid aqueous media under ultrasound irradiation can lead to the corresponding pinacols in 14-88% yields.
第2章：超声辐射下在氨基磺酸、磷酸或草酸水溶液中由锌粉诱发芳香醛酮的还原偶联可得到14～88%收率的片呐醇。 - Conformational Analysis of the Pinacol Rearrangement
一个Pinacol重排反应的构象分析 - The pinacol rearrangements controlled by stereoelectronic effect are briefly discussed.
本文简要叙述了由立体电子效应控制的频哪醇重排反应。 - This paper reports the study on the sulfonated polystyrene resin used in esterification, transesterification, synthesis of acetals or ketals, synthesis of ether and rearrangement reaction of pinacol.
本文研究了磺酸化的聚苯乙烯树脂在酯化、酯交换、缩醛或缩酮的合成、醚的合成及（口片）呐重排反应中的应用。 - Effects of PTFE content in electrode, current density, temperature of electrolyte and electric quantity on pinacol yield was discussed.
探讨了复合电极中PTFE含量、阴极电流密度、电解液温度、电解电量对频那醇产率的影响。 - A reduction-coupling-etherification reaction between aromatic aldehydes or ketones ( 1) and alcohols ( 2) to yield corresponding diether ( 3) of pinacol in the presence of tin and chlorotrimethylsilane.
在三甲基氯硅烷（TMSCl）、四氢呋喃（THF）体系中，芳香醛、酮和醇在金属锡的作用下发生还原-偶联-醚化反应生成相应的频那醇二醚类化合物。 - Rearrangement reactions of pinacol controlled by stereoelectronic effect
立体电子效应控制的频哪醇重排反应 - One of the most powerful methods for constructing carbon-carbon bond is the pinacol coupling reaction.
片呐醇偶联反应是形成碳-碳键最有效的方法之一。 - The Application of Molecular Sieve to Organic Syntheses [ ⅱ]& Rearrangement of 1,2-diols and kinetics of pinacol rearrangement
分子筛在有机合成中的应用（Ⅱ）邻叔二醇重排及频那醇重排动力学