苯并

A series of 2-substituted benzimidazoles were synthesized by the reaction of o-phenylenediamine with corresponding acid in polyphosphoric acid under microwave. 11 Compounds were synthesized in this way first time.

以邻苯二胺及相应的羧酸为原料，微波辐射下，合成了18种2-取代苯并咪唑衍生物，其中11种化合物的微波合成未见文献报道，研究并优化了反应条件。

Eight kinds of 2-benzimidazolylalkylene derivatives in polyphosphoric acidhave been synthesized by multi-power bands microwave irradiation technique,starting from corresponding cinnamic acid compounds and they were characterized by~1H NMR,(~13C NMR and MS respectively.

以8种肉桂酸衍生物和邻苯二胺为原料，在多聚磷酸中，采用分段式微波辐射方法合成了8种2-苯并咪唑基烯烃衍生物，并通过1H NMR、13C NMR和MS进行了表征。

Test results of different types of crude oils show th at pyrrolic compounds such as carbazole,benzocarbazole and dibenzocarbazole are found,and the first two types are predominent.

王铁冠 ，张爱云，李素梅不同类型原油的实验结果表明：原油中存在咔唑、苯并咔唑及二苯并咔唑3类吡咯类化合物，且以前两类为主。

The cause of high incidence rate of malign tumor in the front line workers in smithing workshop is closely related to the BaP content in workshop.

结论锻压车间生产一线职工肿瘤高发原因与生产环境空气中苯并芘含量关系密切，应通过改革热处理方法，彻底消除苯并芘对人体的危害，以保障生产一线职工健康。

The pyrrole, oxazoles, pyridinones, quinolines, dibenzodiazepines, tetrahydrobenzoxazines and tetronic acids have been prepared from enaminones.

吡咯、唑烷、嘧啶酮、喹啉、二苯并二氮杂环类、四氢苯并噁嗪酮和特窗酸等都可以由烯胺酮类化合物制得。

But the yields decreased to 71~37％ in n-propanol, i-propanol and i-butanol, with another trimeric byproduct 1-oxo-13c-(2-naphthyloxy)-1, 13c-dihydro-dibenzo xanthenes (29) increasing up to 30％ yield.

而在正丙醇、异丙醇和异丁醇中二苯并咕吨4~6的产率下降至71~37％，另一个二聚体副产物1-氧代-13c-（2-萘氧基）-1，13c-二氢-二苯并-咕吨（29）的含量增加，产率可达30％。

They are a group of chemicals, which include 75 different chlorinated molecules of dibenzo-p-dioxin and 135 chlorinated dibenzofurans.

他们是一组化学物质，其中包括75种不同氯化分子二苯并-对二恶英和135氯化氯二苯并呋喃。

Bisbenzimidazolium salts were used as a tetrahydrofolate coenzyme model, and thus the biomimetic synthesis of twenty-four acyclic diketones as precursors for macrocyclic ketones was successfully accomplished by using the addition-hydrolysis reaction of the bisbenzimidazolium salts with alkyl magnesium halide, wherein six diketones have not been reported in literature.

在本文中，受四氢叶酸辅酶的一碳单元转移反应的启发，作者以双苯并咪唑盐作为四氢叶酸辅酶模型，利用格利雅试剂与双苯并咪唑盐的加成-水解反应，成功合成了二十四种作为麝香酮及类似大环酮重要前体的长链二酮，同时，提供了一种麝香酮及类似大环酮的仿生合成新方法。

Polybrominated dibenzodioxins and furans were also formed from combustion of plastic masterials containing flame-retardants like aromatic and aliphatic bromine compounds .

塑料阻燃剂如溴代化合物在燃烧过程可导致溴代二苯并二恶英和溴代二苯并呋喃的生成。

Examples of metal chelating groups include hydroxides especially aryl or heteroaryl hydroxides such as phenolic hydroxides; amines which may be aliphatic aryl or heteroaryl; mercaptans which may be aliphatic aryl or heteroaryl; carboxylic acids which may be aliphatic aryl or heteroaryl; oximes and ketoximines; acetarylamides; hydroxy silanes and silicones; N-containing heterocycles such as imidazoles benzimidazoles triazoles benzotriazoles thiazoles isothiazoles acid anhydrides and more preferably acid groups (especially carboxylic acid groups phosphoric acid groups polyphosphoric acid groups phosphonic acid groups sulphuric acid groups and sulphonic acid groups).

金属螯合组的例子包括氢氧化物，特别是芳基或如酚醛氢氧化物杂氢氧化物；胺可能是脂肪族，芳基或杂；硫醇可能是脂肪族，芳基或杂，这可能是脂肪族，芳基或羧酸杂；肟和ketoximines； acetarylamides；羟基硅烷和有机硅，含N，如咪唑，苯并咪唑类，三唑类，苯并三氮唑，噻唑类，isothiazoles，酸酐杂环，多最好酸组（特别是羧酸团体，磷酸，团体，多聚酸组，膦酸组，硫酸团体和磺酸组）。

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。