芳基

The microwave-assisted reactions could be finished within several minutes to give high conversion and selectivity.Substrates whose aryl groups were substituted phenyl or naphthyl groups were more suitable in this reaction.

以TfOH为催化剂，在优化的反应条件下，大部分反应都可在数分钟内完成，该反应对于芳基是取代苯环或萘环的的底物效果较好，能得到较高的原料转化率和产物选择性。

This review on organobismuth chemistry is carried out as the following four aspects:(1) the molecular structure characteristics and synthesis of new organobismuth compounds;(2) as reagents for cross-coupling, oxidation, arylation, and other reactions;(3) as catalysts for organic synthesis;(4) as medicines for the treatment of ulcers, anti-tumor and radio-therapy, etc.

本文回顾了近10多年来有机铋化学的研究状况，主要从以下4个方面进行综述：(1)新型有机铋化合物的合成途径与结构特征；(2)有机铋化合物作为交联偶合、氧化、芳基化和其它反应的试剂；(3)作为催化剂；(4)作为生物医药用于溃疡、肿瘤和放射治疗等。

Three bipolar-transporting materials containing carbazole and aryl oxadiazole groups bridged with 1,2-ethylene were synthesized and characterized by 1H NMR, 13C NMR and elemental analysis.

设计合成了三种1，2-亚乙基桥联咔唑和2，5-二芳基-1，3，4-噁二唑衍生物的双极传输材料，并通过核磁氢谱、碳谱、元素分析表征了它们的分子结构，研究了它们的紫外-可见吸收、光致发光、电化学和热稳定等性能。

Compared with those bipolar-transporting materials containing carbazole and aryl oxadiazole groups connected with conjugated groups, these bipolar-trans- porting materials here presented high HOMO and LUMO energy levels and thermal stability.

与共轭基团桥联咔唑和芳基噁二唑的双极传输材料相比， HOMO/LUMO能级相应地提高，热稳定性能增强。

The present invention discloses novel aryl oxazole compounds of Formula I, or pharmaceutically acceptable salts thereof, which have histamine-H3 receptor antagonist or inverse agonist activity, as well as methods for preparing and using such compounds.

本发明公开了式的新型芳基唑化合物或其药学可接受盐，其具有组胺H3受体拮抗剂或反向激动剂活性，本发明还公开了制备和使用这类化合物的方法。

In addition, some aryl-substituted propenoic acids were prepared via Perkin reaction.

此外，通过Perkin反应合成了4种芳基取代丙烯酸，研究了其关环和脱羧反应。

Aim To design and synthesize a serial of 1, 5-diaryl pyrazole derivatives, and to study their COX-2 inhibition activities.

摘要目的设计合成一系列1，5-二芳基吡唑衍生物，并考察其对环氧合酶2的抑制活性。

Biaryl substituted pyrazole compounds are sodium channel blockers useful for the treatment of pain and other conditions.

联芳基取代吡唑化合物为钠通道阻滞剂，用于治疗疼痛和其它病症。

A series of pyridazino[3,2-c]1,2,4-triazoles were synthesized from hydrazides and 3-aryl-6- chloro pyridazine s (3a～3d), which were obtained from substituted benzene and succinic anhydride by Friedel-Crafts reaction, cyclization with hydrazine hydrate, dehydrogenation and chloro-substitution.

以取代苯和丁二酸酐为起始原料，经Friedel-Crafts反应，肼合环，Br2/HOAc氧化脱氢后得到一系列1，6-二氢-3-芳基-6-哒嗪酮(2a～2d)。然后将2a～2d与PCl5在POCl3中回流，得到相应的氯代产物3a～3d，将其与酰肼作用，合环后得到一系列未见报道的哒嗪并[3，2-c]1，2，4-三唑类化合物。所有化合物结构均经元素分析，IR，1HNMR和MS谱得以证实，并对其波谱性质进行了讨论

A few of aryl pyridylalkyl ethers were synthesized by Mitsunobu reaction from substituted phenols 1a-b and pyridyl alcohols 2a-e at room temperature in 45%~70% yields.

在室温下，以取代苯酚1a-b和吡啶烷基醇2a-d为原料通过Mitsunobu反应合成了相应的芳基吡啶烷基醚，反应收率为45%￣70%，反应物2和1之比为1.11∶。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。