heterocyclic

Syntheses and Properties of Rare Earth Elements with Tiron and Nitrogen Heterocyclic Ring

稀土与钛铁试剂，含氮杂环三元配合物的制备和性质

New , sterically demanding 1, 3-dialkylimidazolinium salts used as N-heterocyclic carbene precursors were synthesized and characterized.

合成并表征了一种新型的有空间需求的N - 杂环卡宾前驱体1, 3- 二烷基咪唑啉盐.

Self-Assembly Chemistry of Ligands Bridged by N-Containing Five-Membered Heterocyclic Rings and Symmetrical Ligands Containing Double Schiff-base

含氮五元杂环桥联及含对称双Schiff-base有机配体的合成及自组装化学研究

Hexahydroxy N-containing heterocyclic compound without sulfur and phosphorus was synthesized and its structure was characterized.

合成了无硫、磷的六元含氮杂环化合物添加剂.

We have, therefore , in both of the examples above, heterocyclic compounds with " built-in " or latent functionality.

上述两例中的杂环化合物,都具有 “ 固有的 ” 或潜在的官能基.

Azole: a class of organic compounds having a five-membered heterocyclic ring with two double bonds.

氮杂茂: 一种由五种杂环元素,两组粘合剂组成的有机化合物.

This paper describes the applications and the synthetic method of heterocyclic compounds Imidazolidone and Imidazolethione.

介绍了杂环化合物咪唑酮和咪唑硫酮类化合物的应用及合成方法.

Electrophilic substitute reaction of penta-heterocyclic compounds

五元杂环化合物的亲电取代反应

These dyes have been cyanated through phase transfer catalysis, the ex-tinction coeffcients of two blue heterocyclic disperse dyes containing cyano have been obtained so high up to 80 000-90 000 m2/ mol.

所得的两个含氰基蓝色杂环分散染料，它们的摩尔吸收系数高达80000～90000m2／mol。

The mechanism discussed in this paper is connected with the different bond length and resonance energy of those N containing heterocyclic compounds.

其抗磨减摩机理与杂环化合物的化学键长及共振能大小有关。

In this paper , two unsaturated alicyclic nitrogen heterocyclic crownethers were synthesized by phase transfer reaction.

采用相转移催化反应合成了两个不饱和脂环氮杂冠醚.

Synthesis of Heterocyclic Disperse Dyes Containing Tetrahydro quinoline

含四氢喹啉杂环分散染料的合成

Many constituents are mutagens and carcinogenic such as alkenes, nitrosamines, polynuclear aromatic and heterocyclic hydrocarbons, amines.

烟草的很多成分都会引起有机体突变以及致癌,如烯烃化合物, 亚硝胺, 多核芳香烃以及多环碳氢化合物和铵.

Oxazoline, a five-membered heterocyclic ring containing both N and O coordinated atoms, is an excellent class among nitrogen-containing chiral ligands.

其中，同时含有N和O的五元杂环的恶唑啉配体是比较优秀的一类含氮手性配体。

A higher yield for Heterocyclic aromatics also could be obtained.

对杂环芳烃的催化也获得了较高的收率。

The synthesis and anticancer activities of heterocyclic thiosemicarbazone containing norfloxacinyl have been studied.

研究了结构为含氟哌酸基的缩胺硫脲的合成及其抗癌活性。

Application of azides in synthesis of heterocyclic compounds

叠氮化合物在杂环化合物合成中的应用

In EIMS there are many frame-rearrangement ion peaks. The cleavage of C-O, C-F. C-CF3 bonds and the formation of five-or four-membered heterocyclic ring ions containing nitrogen by losing CO are major mass spectrometric characters.

在EIMS中，均存在较多的骨架重排离子峰，其中C O，C F，C CF3，键断裂及失去CO形成的五元，四元含氮杂环离子是重要质谱特征。

In contrast, electro-withdrawing groups CHO and COCH_ 3 on the attacking site will favor the intramolecular nucleophilic substitution of nitrogen and form 5-membered heterocyclic compounds.

而当R为吸电子基团-CHO、-COCH3时，主要发生分子内氮原子上的亲核取代反应，产物为含氮的五员杂环化合物。

Morphine: Heterocyclic compound, narcotic analgesic alkaloid originally isolated from opium.

吗啡: 杂环化合物, 从鸦片分离出的麻醉性镇痛药镇痛药生物碱.

Alder. Along with the development of the science and technology, Intramolecular Diels-Alder reactions and Hetero-Diels-Alder reactions appear. They are important methods of synthesis of hexatomic ring and hexabasic heterocyclic compound.

随着科技的发展，又出现了分子内的Diels-Alder反应以及杂Diels-Alder反应，它们是有机化学中合成六元环状化合物、六元杂环化合物的重要手段。

Synthesis and Catalytic Properties of Nitrogen Heterocyclic Polymers

氮杂环高分子化合物的合成及催化性能研究

5,6-Bis ( bromomethyl) benzimidazole is an important intermediate for making heterocyclic of [ 60] fullerene derivatives in Diels Alder reaction.

5,6-二溴甲基苯并咪唑是Diels-Alder环加成反应形成含杂原子的C60衍生物的重要中间体。

The N-heterocyclic carbene formation to ligand compounds with the transition metals, can catalyze the formation of the C-C, C-H, C-O and C-N.

N-杂环卡宾前体&咪唑盐和咪唑啉盐，以之为配体与过渡金属形成配合物并将其应用于催化C-C，C-H，C-O和C-N键的形成反应，包括烯烃复分解反应。

In this paper, two unsaturated alicyclic nitrogen heterocyclic crownethers were synthesized by phase transfer reaction.

采用相转移催化反应合成了两个不饱和脂环氮杂冠醚。

TMC is widely used in carbohydrate chemistry and peptide chemistry as Condensation reagent or dehydrating agent but few in synthesis of heterocyclic compound.

TMC作为脱水剂和缩合试剂被广泛应用于糖类化学和肽类化学中，对于将其作为底物合成杂环化合物的应用很少。

Biogenic amines are aliphatic, alicyclic or heterocyclic organic bases of low molecular mass, which arise as a consequence of metabolic processes in animal, plants and microorganisms.

生物胺是一类含氮低分子化合物，对动植物和微生物有重要的生理作用。适量的生物胺有助于人体正常的生理功能，过量则会引起不良的生理反应。

HH-3 S is a heterocyclic compound, transparent acidic fluid.

HH-3S是一种杂环化合物 、 透明酸性液体.

The progresses in five-membered heterocyclic metallocene analogic complexes and their application in olefin polymerization are reviewed.

综述了五元杂环类茂金属配合物的研究进展及其在烯烃聚合中的应用.

Structural Study on Heterocyclic Carbene-Containing Iron Carbonyl Cluster ⅱ. Syntheses and crystal structure of

含杂环卡宾碳的铁羰基簇合物的结构化学研究Ⅱ.&Fe3（CO）8[：CNHC（S）C（CH3）2NH]的合成和晶体结构