芳香

The FTIR of lignin-based polyhydric alcohol shows new characteristic peak of carbonyl is formed and the characteristic peak of aromatic ring and polyether at 1600cm-1 and 1110cm-1 respectively, which induce there is linkage of chemical bond.

所得木质素多元醇通过红外光谱图表明在1750cm-1附近有新的酯羰基生成，并且在1600cm-1含有木质素的芳香环和1110cm-1的聚醚链，表明木质素磺酸钙与聚醚多元醇在互溶过程中有化学键的接合。

Novel rod like phenylene thiophene based polyhydroxy amphiphiles, derivatives of gallic acid combining three hydrophilic 2,3-dihydroxypropyloxy groups and one alkyl chain via central aromatic linking units, have been synthesized by using Ni, Pd(0) catalyzed coupling reaction as key steps.

以Ni， Pd (0)催化的C-C偶合反应为关键步骤合成了基于苯联噻吩的棒状型多羟基两亲性分子，它们是以棒状芳香核为中心部分，一端带三重亲水的2，3-二羟基链，另一端为带一条烷基链的没食子酸衍生物。

Several polynuclear aromatic hydrocarbons, many found in cigarette smoke, are potent carcinogens.

答：在香烟中发现多种多环芳香化合物，它们是致癌的物质。

This thesis mainly focuses on overcoming the substrates limition of the present catalytic systems,low catalytic efficiency,and application in total synthesis.1.Conveniently synthesized sulfonamide alcohol titanium complex has been used to catalyze the asymmetric addtition of methyl propiolate to various aromatic and aliphatic aldehydes with high enantioselectivity.

本论文即针对现有催化体系的底物局限性、催化效率低、应用研究少等展开研究：1、我们将简便合成的磺酰胺基醇配体-钛催化体系应用于催化丙炔酸甲酯对各类芳香醛及脂肪醛的不对称加成取得了理想的结果。

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。

Benzene - The Prototypic Aromatic System.

苯——典型芳香体系。

Flowers deep purple, large, fragrant; pedicels long, slender, puberulous or subglabrous, 2-bracteolate at or above middle.

花深紫色，大，芳香；花梗长，纤巧，被微柔毛或者近无毛，具2小苞片在中部或中部上。

His conclusion is that, like flowers, the simpler and purer a man is, the more inner fragrance he has.

他的结论是，人也是一样，愈朴素单纯的人，愈有内在的芳香。

Results show that there is some aromaticity in the ring of pyrazole compounds, also there is some linear relationship between total energy, density and the number of amine groups respectively. Calculated detonation velocities of these compounds are more than 8.0 kms^(-1), which indicate that these compounds are very good potential energetic materials.

结果表明：吡唑环上有一定的芳香性特征；理论计算得到部分化合物的总能量和密度与NH2原子个数都有较好的线性关系；大多数化合物的爆速在8.0 kms^(-1)以上。

The largest chemical shifts were observed for the proton 1.48 ppm adjacent to the central pyridinium ring and para-protons 1.47 ppm with respect to the nitrogen of pyridinium.

在最终的亲核加成化合物2-F的芳香族区中的这些化学位移与9，10二氢-9-甲氧基-9-(4甲氧基苯基)-10-甲基吖啶的对应物是一致的，17b 这被证明是与过量的MeOH形成的9-苯基吖啶盐的加成化合物（支持信息中的图S7）。

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。