查询词典 binaphthyl

Under the selected chromatographic operation conditions, the 2,2'-Dihydroxy-1,1'-binaphthyl, 2-Naphthol and other impurities could be separated efficiently.

在选定的色谱条件下，1，1'-联－2-萘酚和2-萘酚等杂质之间具有较好的分离效果。

The first hyperpolarizabilities of binaphthyl bridged chiral bis-porphyrins depend on the spatial arrangement of the substituents.

一阶超极化率的大小与双卟啉中推／拉电子基团的空间排列方式有关。

Starting from 2-naphthylamine,2,2′-diamino-1,1′-binaphthyl was obtained via oxidation,coupling reaction and rearrangement.

&配体催化合成&是有机化学研究领域中的前沿和热点，它是化学领域的一门交叉学科。

Optically active axially dissymmetric binaphthyl derivatives have been extensively used as excellent chiral ligands in asymmetric catalysis and chiral recognition.

光学活性的联萘衍生物以其独特的立体化学性质作为优异的C2轴手性诱导源，已被广泛地应用到不对称催化反应和手性识别中。

The direct aldol reactions catalyzed by organocatalyst derived from 2-amino-2'-hydroxy-1,1'-binaphthyl were studied.

研究了2-氨基-2'-羟基-1，1'-联萘衍生的有机小分子催化剂催化的直接羟醛缩合反应。

Their specific optical rotation is higher than 1, 1'-binaphthyl monomer in concentrated sulfuric acid, and increased with the excess enantiomer percentage of monomers increased, but the direction of rotation is not same with their monomer.

它们的结晶度较低，在浓硫酸中的旋光活性远大于联萘单体，其旋光值与聚合物手性单元的过量比例成线性关系，但旋光方向却与单体不同。

The cyclopalladated catalyst containing axial chiral binaphthyl backbone has the following structural formula.

该类环钯催化剂含有轴手性联萘骨架，具有如下的结构式。

The geometries of a series of binaphthyl bridged chiral bis-porphyrins were optimized using B3LYP method at 6-31G basis set level.

在6-31G水平上用B3LYP方法对手性联萘桥联双卟啉系列分子进行几何构型优化。

In order to synthesize the functional polyquinolines (such as proton conducting polyquinolines and optically active polyquinolines) and investigate structure-property relationships, polyquinolines and polyanthrazolines containing isomeric pyrrole units or 1, 1'-binaphthyl in main chain were synthesized and their properties were studied.

建立了二乙酰吡咯的合成方法；合成并表征了四种二苯酰基-二氨基单体和五种新型的含吡咯基或联萘基的二乙酰基单体；并对部分合成方法进行了改进，简化了实验步骤，提高了产率。

Up to 95.01% yield of 2-amino-2'-hydroxy-1,1'-binaphthyl was obtained in chlorobenzene using the oxidant with 10% FeCl3 loading on the support containing 5% TiO2 at 60 ℃. The activity of the used oxidant was improved by treatment with H2O2, which provided an effective method to regenerate the solid-oxidant.

结果表明：在60 ℃，氯苯作溶剂的情况下，含TiO25%的载体，负载10% FeCl3时2-氨基-2'-羟基-1，1'-联萘的收率最高达到了95.01%；用过的固体氧化剂经H2O2氧化处理后活性明显恢复，证明此法是一条循环再生的有效途径。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。