查询词典 intramolecular

In the course of our study the chemistry of arenes contaning allylic acetates moiety under the catalysis of palladium, we found an efficient synthesis of benzocycles via intramolecular Friedel-Crafts reaction of halogen free 6-acetoxy-4alkenyl arens.

我们在设计钯催化的碳—氢键活化时，发现了含有烯丙基醋酸酯侧链的芳烃的三氟醋酸促进的分子内的Friedel-Crafts反应，从而为有效合成苯并六元环结构提供了一个方便的方法。

Cellulose acetate butyrate,which is widely applied as coatings additive, is synthesized in the heterogeneous system. The activation is required because of the strong hydrogen intramolecular and intermolecular bondings and the regulation of the crystalline region in cellulose microfibrils.

中文摘要纤维素醋酸丁酸酯（Cellulose acetate butyrate是一种广泛应用于涂料工业的添加剂，由于纤维素具有分子内与分子间强氢键作用以及纤维素纤维的局部规整的结晶序列等特征，一般纤维素在酯化反应前都需要进行预活化处理，工业上纤维素醋酸丁酸酯的合成方法一般都在非均相体系中进行的。

It has been demonstrated that appreciable photoinduced intramolecular electron transfer took place giving long-living redox-ion intermediates via a triplet pathway.

发现其中一些化合物在极性溶剂中受光激发后，通过快速的电子转移生成较长寿命的电荷分离中间体，得到十分有意义的结果。

For SERRS of R6G excited at 514.5 nm, the enhancements of v151 and v154 are resulted from weak intermolecular (from Ag_2 cluster to R6G) CT and the strong intramolecular charge transfer (similar to that of RRS of R6G), respectively.

对于R6G分子在入射光为514.5 nm时产生的SERRS中，振动模v151和v154的增强分别来自分子间微弱的电荷转移(从Ag_2团簇到R6G分子)和强烈的分子内电荷转移(类似R6G的共振拉曼光谱)。

For the fourth part, we first designed a hydrogen bonding-mediated rigidified polymer. The X-ray crystal analysis of its fragment molecules showed the existence of consecutive intramolecular hydrogen bonds, which forced the backbone to adopt a rigidified planar conformation.

在第四部分工作中，首先我们设计了一种分子内氢键控制构象的聚合物，通过对其氢键骨架的单晶培养和结构解析证实在它们的结构中存在三中心氢键使得它们采取平面刚性的构象。

In model of aromatic amino acids and the simple peptides with aromatic amino acid, intramolecular electron transfer was studied almost with pulse radiolysis technique.

含芳香氨基酸残基的简单肽和蛋白质模型中，研究分子内肽链电子转移一般采用脉冲辐解的研究方法。

An intramolecular α-addition of hydroxy or amine-substituted electron-deficient alkyns catalyzed by phosphines was developed.

主要工作是利用我们小组发现的全碳1，3-偶极子在合成螺环化合物方面做了比较细致和深入的研究。

Topics discussed include ultrafast spectroscopic techniques; aspects of electron transfer reactions ranging from solvent effects; intermolecular and intramolecular systems, to dynamics at semiconductor surfaces; the dynamics of chemical systems using Raman spectroscopy; pericyclic photochemical rearrangements and photodissociation reactions; solvent--solute interaction dynamics; and chemical dynamics in clusters.

讨论的议题包括超快光谱技术，电子转移反应的溶剂效应等方面；分子间和分子系统，动力在半导体表面，使用的化学拉曼光谱系统动力学；周环重排和光化学解离反应；溶剂-溶质相互作用的动态以及在化学动力学组。

Moreover, ring closing reaction of 2,3-dithienylmaleimide was speeded up by efficiency intramolecular energy transfer.

同时，由于采用了分子开关作为分子内受体，荧光共振能量传递现象也在该类化合物中被观察到。

The abnormal behaviour which happened in the nucleophilic substitution process of phenoxy propionic acid has been discovered. The mechanism has been proposed as an intramolecular nucleophilic substitution by neighboring group participation.

发现一系列芳氧丙酸化合物发生亲核取代反应的异常情况，推测可能是分子内邻基参与的亲核取代反应。

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。