FOR a disubstituted complex, MA4B2, the planar arrangement gives three isomers, the familiar ortho, meta, and para arrangements of organic chemistry. 对于双取代络合物MA4B2,其平面排列有三个异构体,常见的为有机化学中的邻位、间位和对位排列。
A type of chiral molecular tweezers has been designed and synthesized by using diphenic acid as spacer and chiral unsymmetrically disubstituted urea as arm for the first time. 以联苯二甲酸为隔离基,手性不对称脲为手臂,设计合成了一类新型的手性分子钳。
Synthesis and fluorescence of chiral disubstituted pyridazine of squaric acid 手性方酰化双取代哒嗪的合成及荧光性研究
The prefixes cis and trans are frequently applied to disubstituted cycloalkanes. 词头顺和反常用于双取代的环烷烃。
Synthesis, Crystal Structures, and the Fluorescence of Bis [ N, N '-disubstituted] Benzamidine Supramolecular Polymeric Compounds 二(N,N-二甲基)苄脒离子型超分子聚合物合成、结构以及荧光研究
Effect of diluents on the extraction of U(ⅵ) with disubstituted amide 释剂对双取代单酰胺萃取铀(Ⅵ)的影响
Research progress of hexanitrohexaazaisowurtzitane ( 2) debenzylation of n, n disubstituted benzylamines 六硝基六氮杂异伍兹烷的研究进展(2)&N,N-二取代苄胺的脱苄反应
Separation of homers of Disubstituted Benzene in Products from Catalytic Reactions by M-103 Liquid-Crystal Capillary Column M-103液晶玻璃毛细管柱分离催化反应产物中二元取代苯异构体
Enantiomeric Resolution of trans 1,2 Disubstituted Cyclopropane by High Performance Liquid Chromatography 高效液相色谱法对反式-1,2-二取代环丙烷类化合物的手性拆分
A series of disubstituted monoamides extractants were synthesized and their extracted species with uranyl nitrate were obtained by extraction method. 合成了系列双取代单酰胺萃取剂,利用萃取方法获得了与硝酸铀酰的萃合物。
Design and synthesis of chiral diphenic acid-based molecular tweezers containing unsymmetrically disubstituted urea unit 手性不对称脲联苯二甲酸分子钳的设计合成一系列二茂铁二取代物的合成和表征
The Synthesis of 2,6 Disubstituted 1,4 Benzoquinones and Their Radiosensitization in vitro 2,6-二取代-1,4-苯醌类化合物的合成及其体外放射增敏作用
In the present of alkali nitrite and carbonate, some nitrobenzenes substituted by strongly electron withdrawing groups undergo a self condensation in an aprotic polar solvent to give symmetrical disubstituted diphenyl ethers in good yields. 在碱金属亚硝酸盐和碳酸盐存在下,被强吸电子基团取代的硝基苯在非质子极性溶剂中能发生自身缩合反应,生成结构对称的双取代二苯醚,收率较高。
One-pot Synthesis of Chiral N, N '-Unsymmetrically Disubstituted Urea 一锅法合成手性双取代不对称脲
Study on synthesis of unsymmetrical aromatic disubstituted ureas 不对称芳香取代脲的合成
Twenty seven disubstituted phenyl benzoate compounds were designed and synthesized, and their powder second harmonic generation ( SHG) were measured by the Kurty-method. 本文设计,合成了二十七种二取代苯甲酸芳酯类化合物,测定了它们的粉末倍频效应,初步讨论了该类化合物的结构及其非线性光学性质的关系。
Recent development of coupling reagents and methods for hindered peptide containing N-alkylated or C_ α, C_ α-disubstituted amino acid residues is reviewed. The advantages and disadvantages of these coupling reagents and methods are discussed. 本文综述了合成含N-烷基氨基酸或α,α-二取代氨基酸位阻肽的偶合试剂研究新进展,并对这些新的偶合试剂及偶合方法的优点和不足予以评述。
The quantitative structure? property relationship ( QSPR) of the melting points was studied for two common kinds of ionic liquids, disubstituted imidazolium tetrafluoroborate and disubstituted imidazolium hexafluorophosphate. 基于这些数据,进行了离子液体定量结构-性质相关性(QSPR)的研究,对两种常见体系(双取代咪唑四氟硼酸盐和双取代咪唑六氟磷酸盐)的熔点进行了关联和预测。
Studies on the Adduct Reaction of Disubstituted Benzene with Ion System of Acetyl Chloride in Gas Phase 气相中双取代苯在乙酰氯离子体系中的加合反应研究
Preparation and Characterization of Extracted Species of Uranyl Nitrate with Disubstituted Monoamides 双取代单酰胺与硝酸铀酰萃合物的制备与表征
Study on Synthesis of Unsymmetrical Disubstituted Ureas from N-Substituted Trichloroacetamide 用N-取代三氯乙酰胺合成不对称取代脲
Relationship Between the Structure and Rotatory Direction of 1,3-disubstituted Cyclohexane Derivatives 1,3-二取代环己烷衍生物的结构和旋光方向
Synthesis of N, N-Disubstituted Aminobenzaldehyde N,N-二取代氨基苯甲醛的合成
On the other hand, some racemates of trans 1,2 disubstituted cyclopropane with aliphatic group were also separated on the columns. 另一方面,一些带有脂族取代基的反式-1,2-二取代环丙烷类化合物也能在这两种柱上得到拆分。
Separation and determination of isomers of three disubstituted benzenes by using glass capillary columns 用玻璃毛细管色谱柱分离和测定三种二元取代苯异构体
In the process of synthesis monosubstituted benzimidazoles, there was an important oxidation step. The efficiency of protonation of the solvents influenced the production of disubstituted benzimidazoles obviously. 单取代苯并咪唑的合成过程中存在一个重要的氧化步骤,双取代苯并咪唑的形成受溶剂质子化效率影响更显著。