查询词典 aromatic compounds

C〓 thiophene didn't exist in aromatic fraction at 200℃, but very abundant at 300℃, indicating that heterotrophy resulted in the disappearance of chlorophyll which had transformed into more stable compounds with phytane side chain.

在200℃热模拟产物芳烃组份中不存在C〓噻吩，而300℃热解产物中该化合物含量较高，这可能暗示着异养黄化作用导致了叶绿素消失，并转化为更加稳定的具植烷侧链化合物。

Six kinds of phenyl hydrazone s were synthesized by the reaction of ice bath using aromatic dia- zonium salt and active methylene compounds.

在冰盐浴条件下，芳香族重氮盐与活泼亚甲基化合物反应，合成了六种新芳香族腙类衍生物。

Oxo ketene dithioacetals are a kind of versatile intermediates in organicsynthesis. It can be widely used in forming aromatic and heterocyclic compounds.

α-羰基二硫缩烯酮类化合物是一类重要的有机合成中间体，广泛应用于芳环和杂环化合物的合成中。

Five variables quantitative structure-biodegradability relationship model was established applying Kier's molecular connectivity indices and shape indices simulation analysis of the biochemical oxygen demand of 42 substituted aromatic compounds with activated sludge.

应用分子连接性指数及分子形状指数分析影响42种取代芳烃在活性污泥中的生化需氧量，建构了一个5变量的QSBR模型，其可决系数(R2)为0。

It provides a route tothe compounds which contains three functional groups, two carbon-nitrogentriple bonds and one carbon-carbon double bond. In water, metallic indiumpromotes carbon-sulfur bond coupling reaction of aromatic sulfonyl chloride withsuitable organic halides to afford sulfones. In the last chapter, metallic tin mediated allylation of aldimines with allylbromide was revealed.

第三章，我们研究了在水相介质中金属铟促进的烯丙基溴对1，1-二氰基-2-芳基乙烯的Michael加成反应，生成一个含碳碳双键和二个碳氮叁键的三官能团化合物，另外，金属铟在水介质中还可以促进芳基磺酰氯与卤代烃发生碳硫键的偶联，生成砜。

Paraffin consists of n-alkane,short p-alkane,naphthene and aromatic, minimal amount of compounds containing elements S,N,O.

石蜡主要是由正构烷烃组成，还有较少的异构烷烃、环烷烃和芳烃，以及含微量S、N、O的化合物。

According to Griess reaction, diazonium-salts formed from aromatic amines such as sulfonamides etc., react with NaNO_2 in acid medium and may be coupled with α-naphthylamine or diphenylamine to produce red colored compounds.

一按Griess反应芳香族胺类的重氮化鹽，如对氨基苯磺醯胺类药物等，在酸性溶液中皆能与α-萘胺或二苯胺分别偶合成偶氮色素而显紅色，过多之亞硝酸可与氮色素再作用使紅色消失而呈棕黄色。

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。

The paramagnetism of 4-1 and 4-2 is unprecedented in thechemistry of transition-metal-containing aromatic compounds.

化合物4-1和4-2具有顺磁性，这在其他金属杂芳香化合物的研究中未见报道。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。