查询词典 aromatic compounds

The title compounds(B1-B6)were synthesized by the reaction of gastrodin's oxidate and aromatic amine .

目的：天麻苷(gastrodin，4-羟甲基苯基-β-D-吡喃葡萄糖苷)的氧化物，与芳香胺合成席夫碱化合物。

Weight loss: tea in caffeine, inositol, folic acid, pantothenic acid and aromatic substances and other compounds that can regulate fat metabolism, especially Oolong tea for protein and fat have a good decomposition.

6，体重下降：在咖啡因，肌醇，叶酸，泛酸和芳香物质和其他化合物，能调节脂肪代谢，特别是乌龙茶对蛋白质和脂肪的茶叶，茶叶有很好的分解。

We focused the study on the synthesis methods of quinoxaline, nitration of its aromatic ring and chlorination of its heterocycle. In this paper, we thought about environmental protection, the cost of material, the feasibility of industrialization, workup easily, and obtained 2,3(1H,4H)-quinoxalinedion, 6-nitro-2,3(1H,4H)-quinoxalinedion, 6,7-dinitro-2,3(1H,4H)–quinoxalinedion, 2,3-dichlo- roquinoxaline, 6–nitro-2,3-dichloroquinoxaline,and 6,7- initro-2,3-dichloro-quinoxaline. A more reasonable, easily, efficient and simple reactive route to synthesize above-mentioned compounds was developed by systematically investigating the yield, the purity and physical character of intermediates.

本文针对喹喔啉及其芳环硝化、杂环氯代的合成进行研究，主要考虑了环保性、原料成本、产业化的可行性、反应操作的简便性等问题，获得了2，3(1H，4H)-喹喔啉二酮、6-硝基-2，3(1H，4H)-喹喔啉二酮、6，7-二硝基-2，3(1H，4H)-喹喔啉二酮、2，3-二氯喹喔啉、6-硝基-2，3-二氯喹喔啉和6，7-二硝基-2，3-二氯喹喔啉等六个中间体，考察了反应产物的产率、纯度和性状等因素，得到了更为合理、方便、实用、简洁的可供产业化的合成路线。

Propolis consists of 55% resinous compounds and balsams, 30% beeswax , 10% aromatic oils, 5% bee pollen.

蜂胶包含55%的树脂化合物和香液，30%的蜂蜡，10%香油和5%的蜂粉。

Phenol: Any of a class of organic compounds with a hydroxyl group (-OH; see functional group) attached to a carbon atom in a ring of an aromatic compound.

酚：以羟基(-OH；参阅functional group)与芳香族化合物环上的碳原子相连为特征的一类有机化合物。

Inorganic phosphates and sodium borate decreased aromatic and heterocyclic compounds in pyrolysis process.

无机磷酸盐和硼砂有效降低木质素热解过程中芳香族化合物及杂环化合物的比例。

The result shows at the mild condition chain olefin that nCl7, polyethylene can be cracked into solutions of ethane, propane, butane, benzene and toluene and other small molecular compounds, polyethylene reacted fluids are mainly composed of a-olefin at the range 12 to 38, by which α-ωdiene, saturated hydrocarbon and aromatic hydrocarbon, anthracene, phenanthrene of albocarbon series are contained.

结果表明，在温和条件下可以将链状烷烃如正十七烷烃、聚乙烯通过微波及炭催化剂的作用，裂解成乙烯、丙烷、丁烷、苯、甲苯等溶剂及小分子化合物。聚乙烯反应液体产物以碳数在12~38范围的α-烯烃为主，也产生α-ω二烯、饱和烃及芳烃，芳烃主要有萘系列、葱、菲等。

The conclusion shows that Anthracene is the main compound in the extracts from water solution of YM coal oxidation. The contents of Hexadecanoic acid、Anthrone and 9,10-Anthracenedione are comparatively high. Aromatic and nitrogenous heterocyclic compounds were also detected, which shouldn't be neglected.

结果表明：在所得水溶液的苯可溶物中检测出绝对高含量的蒽；含量较高的棕榈酸、蒽酮和蒽醌；另外还有一些微量的芳环、杂环类化合物和一系列的长链烷烃。

The second part is about that five-membered rings compounds were synthesised using aromatic aldehyde,α-bromoketone and imine ester in the present of zinc power.

2以芳香醛，α-溴代苯乙酮与氨基酸酯亚胺类化合物在金属锌粉的作用下，生成一系列的四氢吡咯化合物。

The result indicates that those four resuscitation-inducing aromatic herbs mainly contain volatile oil ,and all contain alicyclic compounds; the volatile oil of Borneolum Syntheticum and Styrax both contain Sesquiterpenes of caryophyllene; as resin herbs , Styrax and Benzoinum both contain vanillin, resin ester and balsamic acid .

结果表明，四味芳香开窍药主含挥发油，均含有脂环化合物，并存在一些共有成分，如龙脑冰片与苏合香挥发油中均含有倍半萜类成分石竹烯；苏合香和安息香皆为树脂类中药，两者均含有香荚兰醛成分，尚含树脂酯，香脂酸等。中国论文联盟http：//www.lwlm.com

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。