本文介绍了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、L- 薄荷酯和叔丁酯。
Synthesis of sterically hindered dicyclohexylmethyl, L menthyl and tert butyl diazoacetate by diazo transfer was described on this paper.
中离子碳烯类似于氮杂环碳烯。
鸟嘌呤：嘌呤类的有机化合物，常称为碱基，包含二个环，各含氮原子和碳原子，还有一个氨群。
Guanine: organic compound of the purine family often called a base consisting of two rings each containing both nitrogen and carbon atoms and an amino group.
胞嘧啶：嘧啶族的有机化合物。常被称为基，包含一个单环，内有氮原子和碳原子，还有氨群。
Cytosine organic compound of the pyrimidine family often called a base consisting of a single ring containing both nitrogen and carbon atoms and an amino group.
这是迄今为止最有效的含氮杂环的N -芳基化反应的催化体系之一。
To the best our knowledge, our protocol is among the most efficient catalyst system for the N-arylation of N-containing heterocycles reported so far.
用质谱法、核磁共振波谱法、红外光谱法等，确定了未知氮杂环季铵盐型阳离子表面活性剂的结构。
Structute of nitrogen heterocyclic ring quaternary ammonium salt cationic surfactants was identi fied by mass spectrography, nuclear magnetic resonance spectra, infrared spectra and etc.
本文概述了关环转换反应所用催化剂体系及其在天然产物合成中的应用，内容涉及到碳环及含氧、含氮杂环天然产物的合成。
This paper reviews the catalyst system in RCM reaction and RCM application in the synthesis of natural products including carbon ring, oxygen heterocycles and nitrogen heterocycles, etc.
本文采用一种修正的分子连接性指数研究了氮杂环类化合物水溶解度的定量结构性质关系。
This article has presented a modified molecular connectivity indices used in the QSARs research of the aqueous solubilities of heterocyclic nitrogen compounds.
生物胺是一类含氮的脂肪族或杂环类低分子化合物，对动植物和微生物活性细胞有重要的生理作用。
Biogenic amine is a kind of low molecular weight compounds containing nitric fatty group or heterocycle group. They have biological importance in vegetable, microbial and animal cells.
新的硫取代含氮杂环膦酸化合物，药物组合物，和治疗钙与磷酸盐异常代谢的方法。
Novel thio-substituted, nitrogen-containing, heterocyclic phosphonate compounds, pharmaceutical compositions, and methods of treating abnormal calcium and phosphate metabolism.
在大量试验的基础上，深入分析并研究了马氏体不锈钢活塞环渗氮畸变的各项影响因素。
Various influence factors were analyzed in detail on nitriding distortion of the piston rings made of martensitic stainless steel based on abundant researches.
一种配位(络合)化合物，其中的金属离子与氮、碳或氧等非金属原子结合生成有配位共价键的杂环。
An organic coordination (complexing) compound in which the metal ion is bound to atoms of nonmetals, e. g. nitrogen, carbon, or oxygen, to form a heterocyclic ring having coordinate covalent bonds.
金是常用的电极材料和SERS基底，而含氮有机杂环分子的表面吸附和反应过程是饶有兴趣的研究体系。
Gold is an ordinary material for electrode and a good SERS substrate, and the study of nitrogen-containing organic molecules on this substrate is an interesting research subject.
三聚氰胺是一种三嗪类含氮杂环有机化合物。
含氮稠环衍生物，含该衍生物的药物组合物，和其作为药物的用途。
Nitrogenous fused-ring derivatives, medicinal compositions containing the derivatives, and use thereof as drugs.
综述了近年来各种五元氮杂环的开环反应及其在有机合成中的应用。
This article reviews the ring opening reaction of five membered nitrogen containing heterocyclic compounds.
通过两次吸附分离，然后采用低压电离，高分辨质谱直接进样技术对重馏份油中的含氮多环芳烃进行定性测定。
The qualitative analysis of N polyaromatics in heavy oil was made by a double adsorption separation followed by the application of low voltage ionization and high resolution MS direct sampling.
报道了10种杂氮硅三环类化合物的紫外光电子能谱（UPS） 。
The Ultraviolet Photoelectron Spectra(UPS) of 10 silatranes are recorded in this paper.
嘌呤：嘌呤是对由碳、氮原子组成的双环结构的杂环化合物的统称。
Purine: Any of a class of heterocyclic compounds with a two-ring structure composed of carbon and nitrogen atoms.
对环硼氮烷的合成、结构和反应进行了综述。
This is a summery of the synthesis, structure and reaction of borazine.
生物胺是一类含氮的脂肪族或杂环类低分子化合物。
Biogenic amine is a kind of low molecular compounds belonging to nitric fatty group or heterocycle group.
将六苯基环三硅氮烷与甲基乙烯基硅橡胶按照不同配比共混得到混炼胶，测定老化前后混炼胶的力学性能。
The mechanical properties of gross rubber before and after aging were detected when mixed hexaphenyl cyclotrisilazane with methyl vinyl silicone rubber in different ratio.
本文对格列其特的中间体氮杂双环盐酸盐的合成工艺进行了改进，使工艺更适合工业化大生产的要求。
The synthesis of key intermediate of Gliclazide can be improved by using Potassium borohydride instead of Lithium aluminum hydride. The procedure is suitable for industrial production.
为了更好地研究氮沉降这一环境变化，从植物生长、植物抗逆性、植物营养、凋落物分解、以及外来植物入侵等方面对氮沉降进行了综述。
The summaries on nitrogen deposition are displayed from the aspects including plant growth and phytotrophy and plant tress resistance and litter decomposition and the invasion of non - native plants.
以嘧啶环替换噢中的A环，合成了一系列氮杂噢类化合物。
To substitute the ring a of the aurones with pyrimidine, a series of aza aurones were synthesized.
作为人工模拟酶，通过改变氮杂环蕃化合物的形状以及引入活性基团，形成不同包结性能的主体化合物。
As an artificial enzyme, it can be optimized by changing the diphenylmethane units or bridging chains or by chemical modification of hydrophobic cavities to form new host compounds.
通过分子设计，合成了含氮杂环硼酸酯，利用红外光谱确定了目标产物的分子结构。
A kind of nitrogen-containing heterocyclic borate was designed and synthesized and the molecular structure of the target product was determined by FT-IR spectrum.
以菊酯为骨架，采用组合平行法，设计合成了新型含氮杂环的菊酯类化合物库。
A new nitrogen-containing heterocyclic pyrethroid library was designed and constructed using combinatorial parallel synthesis.
丙卡巴肼、氮芥和异环磷酰胺：可增加患骨髓增生异常综合症和急性粒细胞白血病的风险。
Procarbazine, nitrogen mustard, and ifosfamide, which can increase risk for myelodysplastic syndromes and acute myelogenous leukemia.
研究了一种简便的合成2位含氮杂环色酮类化合物的方法。
In this paper, a simple method for the synthesis of some chromones containing a nitrogen heterocycle substituted at 2 - position is reported.
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