查询词典 acid reaction

A coordination polymer, Zn2(HINA=Isonicotinic acid) was prepared by a solid state reaction of Zn(CH3COO)2·4H2O and HINA at lower heating temperature.

用低热固相合成法制备了配位聚合物Zn2，并用X射线粉末衍射，SEM等方法对产物进行了表征。

In searching for novel and high active fungicides with pyridyl moiety, with Dimethomorph as a model compound and isonicotinic acid as the main starting material, twenty-seven title compounds were designed and synthesized through chlorination, Friedel-Crafts acylation, Wittig-Horner reaction and other steps. All the target structures were confirmed via 1H NMR and elementary analysis.

为了寻找具有高活性的含吡啶杂环杀菌剂，以烯酸吗啉为模板化合物，以异烟酸为起始原料，通过卤代反应、Friedel-Crafts酰基化反应、Wittig-Homer反应等，将吡啶－4-基或2-氯吡啶－4-基引入到模板结构中，设计合成了27个4-［3-（吡啶－4-基）－3-取代苯基丙烯酰］吗啉类化合物，其结构通过1H NMR和元素分析确证。

Waterborne aliphatic polyurethane dispersion was synthesized by the reaction of epoxy resin with isophorone diisocyanate, dimethoxypropionic acid and polyester-diol.

以异佛尔酮二异氰酸酯、聚酯二元醇和二羟甲基丙酸作为主要原料合成了脂肪族水性聚氨酯分散体，并用环氧树脂对其进行了改性。

By adjusting the synthesis conditions, including temperature, pH value of the mixture solution and reaction time, the degree of the hydroxylation of isophthalic acid can be relatively controlled and the product of different structures can be obtained.

控制合成反应条件，可使部分间苯二甲酸配体发生转化而获得不同组成和结构的产物。

By adjusting the synthesis conditions, including temperature, pH value of the mixture solution and reaction time, the degree of the hydroxylation of isophthalic acid can be relatively controlled and the product of different structures can be obtained.

控制合成反应条件，可使部分间苯二甲酸配体发生转化而获得不同组成利结构的产物。

Furthermore, the one-dimensional complexes 26 and 28 with strongπ-πpacking interactions are prepared from DMF solvent, which indicates that the traditional solvent volatilizing method could bring low-dimensional complex.4. By measuring the enthalpy changes of the liquid phase formation reaction for complexes a~e, and calculating the electronic densities of five 5-substituted derivation of isophthalic acid, we can make a conclusion that 5-substituted group changing of the ligand has a little influence on oxygen atoms of carboxyl groups.5. Fluorescence experiments of these complexes indicated that they could be used for luminescence materials in future.6. Using packing saturation rule we calculated and analyzed these series of complexes, and the results showed that the changes of complexes with changes of ligands could be explained from the rule.

在DMF溶剂中得到了具有强π-π堆积作用力的一维配位聚合物[Ln(5-NO_2-bdc)(NO_3)]Ln=Pr(26和Ho(28)，表明传统的溶剂挥发合成条件可以得到低维的配合物。4、通过配合物a～e的液相生成反应焓的测定，以及配体阳离子的电子密度计算，进一步佐证了间苯二甲酸的5位取代基变化对配体的羧基氧原子配位能力影响不大的结论。5、荧光特性表明此类配合物可以用于发光材料。6、利用堆积饱和规律对所得系列的配合物的进行计算和分析，发现随着配体的变化，配合物的变化可以从堆积饱和规律出发进行解释。

The synthesis of a novel rotaxane containing α-CD(α-cyclodextrin) as the macrocycle,stilbene as the 'string' and the isophthalic acid as stopper via a palladium-catalyzed Suzuki coupling reaction in water at room temperature and supramolecular self-assembly was reported.

通过醋酸钯催化的Suzuki偶联反应，在室温下于水溶液中通过超分子自组装制备了以α-CD为大环，异酞酸为端塞，二苯乙烯衍生物为链的新型超分子轮烷。

In this thesis, we describe a facile and economical synthesis of-abscisic acid from keto-isophorone and 3-butyn-2-ol through ketalization, oxidization, Witting-Horner reaction, reduction with chromium sulfate and other steps in 13% total yields. Compared to the previous routes, the starting materials are more commercially available and cheaper and the synthetic process is more easily controlled in our method, but the yield of this route is still to be improved.As to isostere principle, cyclopropyl and methyl vinyl are a couple of isostere.

本论文设计并完成了一条全新的外消旋脱落酸(1)全合成路线，从廉价的工业原料氧化异佛尔酮和丁炔醇出发，经过缩酮化反应、氧化反应、Wittig-Horner反应、CrSO_4选择性还原反应以及水解等七步反应实现了脱落酸的全合成，总产率达13％，与以往路线相比，该路线所用试剂廉价、合成路线简单，但产率有待提高。

Furthermore, single-point energy calculations were refined at the QCISD level of theory with the same basis set (6-311++G**). As a result, the singlet reaction of silylene with isothiocyanic acid contain S-atom abstraction channel, N—H inserted channel, and NH abstraction channel, respectively.

又用QCISD/6-311＋＋G**//B3LYP/6-311＋＋G**方法计算了各个驻点的单点能，计算结果表明单重态的硅烯与异硫氰酸的反应有抽提硫、插入、抽提亚氨基的路径。

The results show that solid superacid catalysts have higher activities,reaction time being short,higher conversion rate of isovaleric acid.

结果表明：此法催化剂用量少、催化活性高、反应时间较短、异戊酸转化率高、工艺简单、在一定条件下催化剂可以重复使用多次。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。