芳香化合物

Birch Reduction, one of the most powerful synthetic methodologies available to organic chemists, provides a bridge between aromatic and aliphatic compounds and makes a huge arsenal of aromatic derivatives readily available for construction of alicyclic molecules, which are possibly converted into various natural products.

Birch还原是联接芳香族和脂肪族化合物的桥梁，它使许多芳香族衍生物成为合成脂肪族化合物，尤其六元脂环天然产物的起始原料，因此Birch还原是有机合成中很有用的方法。

Suitable water-immiscible organic solvents include aromatic hydrocarbons, eg toluene, xylene, naphthalene, tetrahydronaphthalene and methyl naphthalene; chlorinated aromatic hydrocarbons, eg chlorobenzene, fluorobenzene, chloronaphthalene and bromonaphthalene; esters, eg butyl acetate, ethyl acetate, methyl benzoate, ethyl benzoate, benzyl benzoate, butyl benzoate, phenylethyl acetate, butyl lactate, benzyl lactate, diethyleneglycol dipropionate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, di(2-ethylhexyl) phthalate; alcohols having six or more carbon atoms, eg hexanol, octanol, benzyl alcohol, phenyl ethanol, phenoxy ethanol, phenoxy propanol and phenoxy butanol; ethers having at least 5 carbon atoms, preferably C 5-14 ethers, eg anisole and phenetol; nitrocellulose, cellulose ether, cellulose acetate; low odour petroleum distillates; turpentine; white spirits; naphtha; isopropylbiphenyl; terpene; vegetable oil; mineral oil; essential oil; and natural oil; and mixtures of any two or more thereof.

适用于水互溶的有机溶剂包括芳香族碳氢化合物，如甲苯，二甲苯，萘，四氢萘和甲基萘；氯代芳香族碳氢化合物，如氯苯，氟，氯萘和萘；酯类，如醋酸丁酯，醋酸乙酯，苯甲酸甲酯，苯甲酸乙酯，苄酯，苯甲酸正丁酯，苯，醋酸丁酯乳酸，乳酸苄，二甘醇二丙酸酯，邻苯二甲酸二甲酯，邻苯二甲酸二乙酯，邻苯二甲酸二丁酯，二（2乙基己基）酯；醇有6个或更多碳原子，如己醇，辛醇，苯甲醇，苯乙醇，苯氧基乙醇，丙醇和苯氧基苯氧丁醇；醚至少有5个碳原子，最好荤5-14醚，如苯甲醚和phenetol；硝化棉，纤维素醚，醋酸纤维素，低气味石油蒸馏；松节油；白酒，石脑油isopropylbiphenyl；萜类，植物油，矿物油，挥发油；和天然油，以及任何两个或两个以上其混合物。

All the compounds are characterized by IR and elemental analysis.we design and prepare a bipyridinium supramolecular compound and six coordination compounds, which are also characterized by IR, elemental analysis and X-ray structure analysis. According to X-ray structure analysis, hydrogen bonds and n-n stocking interactions participate in the architecture of three-dimensional framework [H2L1 (NO3)2 (H2O)2]n; one-dimensional zigzag coordination polymer [Hgl21.5CH3OH]n; binuclear metallamacrocycle (HgI2L2)2 3H2O; helical double-stranded one-dimensional coordination polymer [Co2(L2)2-2CH3OH]n; double-stranded one-dimensional coordination polymer [Co2(L3)2-CH3OH-CH3CN]n; and three-dimensional compound [Cu(C5H4NCOO)2(H2O)2]-H2O with hydrogen bonds, three-dimensional coordination polymer {[Cd(C5H6NCOO)2H2O]-DMF}n, which are indirectly obtained from the precursor ligand L3 through metal ion induced the hydrolysis of diamide and self-assembled with the hydrolyzate.

我们首次合成了一个双吡啶鎓超分子化合物和六个过渡金属配合物，并通过IR谱，元素分析和X-ray晶体衍射分析对它们进行了表征。X-ray晶体结构分析表明：超分子化合物[H_2L1·(NO_3)_2·(H_2O)_2]_n是由多种氢键和芳香环间的π-π堆积作用构建的三维无限结构；[HgI_2(L1)·1.5CH_3OH]_n是一维锯齿状配位聚合物；(HgI_2L2)_2·3H_2O是双核金属大环化合物；[Co_2(L2)_2·2CH_3OH]_n是具有一维双螺旋结构的配位聚合物；[Co_2(L3)_2·CH_3OH·CH_3CN]_n为一维双链结构的配位聚合物；以及由非直线形配体L3在金属离子Cu和Cd的诱导作用下发生水解，并且金属离子与水解产物——异烟酸根离子自组装，形成了三维氢键超分子化合物[Cu(C_5H_4NCOO)_2(H_2O)_2]·H_2O和三维配位聚合物{[Cd(C_5H_6NCOO)_2H_2O]·DMF}_n。

The condensation of aromatic aldehydes with active methylene compounds like malononitrile, cyanoacetamide and ethyl cyanoacetate has been found to proceed very efficiently at room temperature giving excellent yields, but the condensation of heteroaromatic,α,β-unsaturated and aliphatic aldehydes with active methylene compounds proceeded smoothly in 50~65℃ with good yields and the reactions of aromatic, aliphatic ketones as well as p-phthalaldehyde with malononitrile also proceeded in 75~85℃ with moderate yields.

芳香醛与活泼亚甲基化合物如丙二腈、氰基乙酸乙酯、氰基乙酰胺的缩合在室温下即能顺利进行，获得了很高的收率；而对于杂环芳醛、α，β-不饱和的醛以及脂肪醛与活泼亚甲基化合物的缩合，需在50~65℃下进行，也取得了很高的收率；对于脂肪酮、芳香酮以及二元醛与丙二腈的缩合在75~85℃下也能顺利地进行，获得中等以上的收率。

The organoboron compounds in this paper are based on triarylboranes, boronic acids and boronic esters. The structure-property relationship and sensing mechanism are elucidated. Organoboron compounds as Lewis acid can be used as fluoride probe with high sensitivity and selectivity because they have a unique LUMO in which the π-conjugation is divergently extended through the vacant p-orbital of the boron atom. The complexation of the boron π-electron systems with fluoride ion would interrupt the π-conjugation extended through the boron atom, causing the change of photophysical properties.

介绍了基于三芳基硼化合物、硼酸和硼酸酯的有机硼化合物在氟离子检测中的应用，评述了这些化合物的结构和检测性能之间的关系，讨论了检测机理，即有机硼化合物中硼原子空的p轨道使其作为路易斯酸能够选择性地结合氟离子，硼原子与氟离子的结合破坏了硼中心与芳香取代基的p-π共轭，引起有机硼化合物光物理性质的变化，从而实现对氟离子的高选择性检测。

The introduction of methoxyphenyl or fluorenyl endows significantly enhanced electron-accepting capability,and the LUMO energy level decreases from-3.50 eV of 1a to-...

同时，大尺寸芳香取代基的引入有效抑制了由于分子聚集而引起的荧光淬灭，使三亚吡嗪化合物的荧光量子效率从化合物1a的0.23提高到化合物1b的0.81和化合物1c的0.87。

Hexaazatriphenylene derivatives were designed and synthesized by introducing methoxyphenyl or fluorenyl peripheral aryl substituents,and the effect of these aromatic substituents on their optical properties and bandgap were characterized by means of UV-Vis absorption spectroscopy,fluorescence spectroscopy and electrochemical cyclic voltammogram.

结果发现，芴和甲氧基苯芳香基团的引入使三亚吡嗪化合物的接收电子能力显著提高，LUMO能级从化合物1a的-3.50 eV降低到化合物1b的-3.68 eV和化合物1c的-3.66 eV，并伴随着吸收光谱和荧光光谱的显著红移，最大吸收和发射峰从化合物1a的413和432 nm红移到化合物1b的460和543 nm以及化合物1c的479和552 nm。

From activated sluge of SBR system, to obtain dominant mixed bacteria, such as Nocardia and Pseudomonas by screening and acclimatization. When mixed and applied to degradation experiment of bleaching wastewater, degradation of chloride aromatic compounds very well.

从SBR系统的活性污泥中筛选、培育得到优势菌，经组合后，选取具有高效降解芳香族化合物的优势混合菌即假单胞菌和诺卡氏菌的组合菌，应用于造纸漂白废水的氯代芳香族化合物的降解实验。

The normally brominated Baylis-Hillman adducts were formed as the major product at low temperature. While at room temperature or heating, the α,γand β,β-dibrominated compounds were formed as the major products using 3-butyn-2-one and methyl propiolate or propynenitrile as substrate, respectively.

贫电子炔类化合物的Baylis-Hillman反应的研究在这部分工作中我们发现在用TiBr〓或BBr〓为Lewis酸催化贫电子炔类化合物和芳香醛的Baylis-Hillman反应时，温度对反应的影响很大：当反应在低温下进行时，通常生成的是正常的β-溴代的Baylis-Hillman反应产物；而在室温或加热条件下反应，以丁炔酮为底物时，主要生成的是α，γ-二溴化合物，而以丙炔酸甲酯及丙炔腈为底物时，主要生成的是β，β-二溴化合物。

Aroma components, including esters, alcohols , aldehydes, ketones, acids , acetals , and other compounds which respectively represented 24.6%, 14.5%, 11.6%, 17.4%, 8.70%, 17.4, 5.80% of the total aroma components were identified in 'Rosa ' strawberry fruit. and they.

栽培草莓&罗莎&成熟果实中共鉴定出69种芳香成分，主要成分为酯类化合物(17种)，占总数的24.6%，醇类化合物(10种)占14.5%，醛类化合物(8种)占11.6%，及酮类化合物(12种)占17.4%、酸类化合物(6种)占8.70%，烷烃类化合物(12种)占17.4%，其它类化合物(4种)占5.80%。2。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。