查询词典 imino-ester

After extraction by ethanol and purification by cationic ion-exchange column, a method of using reversed-phase high-performance liquid chromatography and precolumn derivatization with o-phthalaldehyde and 9-fiuorenylmethylchloroformate is employed for determination of free amino acids in tobacco . This method assures that amino acids with amino and imino groups can be determined simultaneously. The results of duplication experiment and recovery experiment are acceptable.

本试验用乙醇提取烟叶中的游离氨基酸，并用阳离子交换树脂纯化，再用邻苯二甲醛、氯甲酸芴甲酯联合柱前衍生、反相高效液相色谱分析测定了烟叶中的游离氨基酸，该方法能同时测定烟叶中的带氨基和亚氨基基团的氨基酸，并且分析方法的重现性和回收率均令人满意。

The molecules involving azo and imino functional groups can coordinate with Hg2＋ to result in a large blue shift from 453 to 363 nm corresponding to a notable color change from orange to pale yellow in aqueous methanol solution (H2O/CH3OH＝1/4, V/V), which can be applied to naked eye detection of Hg2＋.

这些传感器分子包含偶氮和亚胺功能基团，在水/甲醇溶液（体积比1/4）中，可以与汞离子配位，使紫外-可见光谱中吸收峰发生由453到363 nm的蓝移，引起一个明显的溶液由橙色到淡黄的颜色变化。因而，这些传感器有肉眼检测汞离子的潜在应用。

If we used potentiostatic electrosynthesis method, a kind of black polymer film was found on cathodic surface when 〓 was more negative than-1. 40V . XPS analysis demonstrated that the film formed from excited pyruvic acid, tetrahedral intermediate and imino acid.

时，电极表面上吸附的丙酮酸，四面体中间体和亚胺酸受激而生成黑色的聚合膜，通过XPS技术对聚合物进行了定性、定量和结构分析。

In addition, ioding was found to be an efficient catalyst for the imino Diels-Alder reaction of N-arylimine and enol ethers and the reaction provided tertrahydroqinolines in good yields. One pot synthesis of tetrahydroqinolines from aldehyde, aniline and enol ethers was also achieved using iodine as the catalyst. The chemical yield of the"one pot"reaction was comparable with that obtained using preformed N-arylimine.

此外我们也发现碘能够有效地催化N-芳基亚胺与烯醇醚的Diels-Alder反应，以很高的化学收率得到了四氢喹啉衍生物，并且发现碘也能够直接催化芳香醛、苯胺、烯醇醚的三组分&一锅&反应，获得的化学产率与使用预制的N-芳基亚胺相当。

Aniline-BP was used as CTC system to initiate the polymerization ofMMA under UV irradiation, PMMA prepolymer with aromatic imino endgroup was prepared.

以苯胺-BP为CTC体系，在紫外光辐射下，引发甲基丙烯酸甲酯聚合，得到了含有芳亚胺端基的聚甲基丙烯酸甲酯预聚物。

Upon mild oxidation of Ⅸwith iodine in potassium iodide, a disulfide, which was characterized as 3,3'-dithiobis [2-(l-hydroxyethylidene)-3-imino propionitrile], was formed.

将IX用碘/碘化钾温和地氧化得到二硫化物（XIV，即3，3'-二硫-双2-（1-羟乙叉基）-3-亚胺基丙腈。

The X-ray crystal structure analysis of the complexes shows that all lanthanidecomplexes exhibit a tripodal ligand coordination mode, with three imino nitrogenfrom benzimidazolyl and pyridyl group, and one amino nitrogen atoms as donors.The ligands show two kinds of configuration: the fan-like and the pincer-like. Bothintra- and intermolecular π-π interactions are found in these complexes.

晶体结果表明，在所有的稀土配合物中，三脚架配体均用三个支脚上的苯并咪唑、吡啶环氮原子及一个顶端的氮原子和稀土离子进行配位，表现出三脚架式配位方式，同时，三脚架配体有风扇形及钳子形两种空间配位构型，并形成了分子内及分子间的π-π堆积作用。

It is reviewed that sulfamic acid can be utilized as a green catalyst in many important organic reactions such as esterification and transesterification,group protection,imino-Diels-Alder,rearrangement,substitution and condensation.

综述了近年来氨基磺酸作为一种绿色催化剂在有机合成中的应用，主要包括酯化与酯交换、基团保护、氮杂Diels-Alder、重排、取代及缩合等反应。

Fluoroalkyl acetic acids were converted to their corresponding carbonyl chlorides, and the latter reacted with o-aminpbenzyl aldehyde and ammonia gas to give 3-(1-imino-fluoroalkyl)-1H-quinolin-2-ones in moderate yields.

将2-氟烷基乙酸转化成相应酰氯，后者与邻氨基苯甲醛在通氨气条件下以较高产率转化为相应的3-（1-亚胺基-氟烷基）-1H-喹啉-2-酮。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。