Catalyzed by indium tribromide as a Lewis acid catalyst, this reaction was completed smoothly in green solvent ethanol.

我們采用三溴化銦作路易斯酸催化劑，在綠色溶劑乙醇中順利實現了該反應91免费在线。

These active centers play many important roles in biological system, such as oxidation-reduction, electron transfer, catalyse of lewis acid.

這些活性中心在生物體中扮演著許多重要角色黄色网站.www，如氧化還原、電子傳遞无码精品久久久久久天天影视、路易斯酸催化等久久精品视频色。

In this paper, as a typical lewis acid, anhydrous aluminum (AlCl_3) was used as the catalyst to get PP/PS blends compatibilized by in-situ Fridel-Crafts alkylation. The effects on PP and PS components of AlCl_3 were investigated first, mainly by rheology, including steady rheology method and dynamic rheology method. Then the in-situ reactions in PP/PS alloys under different conditions were executed and studied in detail by selective Soxhlet solvent extraction. And at the same time, the evolutions of phase structures of PP/PS and the resulted PP/PS/AlCl_3 alloys were investigated by SEM and SALS. The steady and dynamic rheological behaviors of in-situ compatibilized PP/PS alloys were obtained systematically.

本文選用典型路易斯酸無水氯化鋁(AlCl_3)作為催化劑，利用烷基化反應機理黄片一级三级高清黄色视频，對PP/PS合金直接進行原位催化反應增容99久久免费精品视香蕉蕉，以流變學方法(包括靜態(tài)流變和動態(tài)流變學方法)為主，詳細探討無水AlCl_3對PP/PS合金體系中PP和PS兩組分的影響99热99这里只有精品，并在此基礎上進一步系統(tǒng)研究無水AlCl_3原位催化增容PP/PS合金的相結構演變及增容反應特征，然后對不同原位催化增容條件下獲得增容合金材料的流變行為特征作了深入探討国内偷拍专区。

This article has described the technology to prepare aromatie solvent naphtha by use of the C9 fraction (100-200℃ boiling range) as raw material, few is acid as catalyst, through a cationic polymerization.

本文介紹了利用沸程在100~200℃間的C9餾分為原料国产操屄视频，以Lewis酸作為催化劑，進行陽離子聚合反應制備芳烴溶劑油的工藝在线观看国产理论播放网站免费视频。

The Research about the Synthesis of Phenylsulfonyl α,β-unsaturated Ketones and Their Applications in Asymmetric Diels-Alder Reaction Catalyzed by Lewis Acid and Chiral Titanium Reagents.

苯磺醭雠访廊似拊谙撸基取代的α，β-不飽和酮的合成及其在不對稱催化Diels-Alder反應中的研究

The Research about the Synthesis of Phenylsulfonyl α,β-unsaturated Ketones and Their Applications in Asymmetric Diels-Alder Reaction Catalyzed by Lewis Acid and Chiral Titanium Reagents.

苯磺跹侵尢丶痘芶；〈摩僚访廊蘸渥耘氖悠翟谙卟シ牛?不飽和酮的合成及其在不對稱催化Diels-Alder反應中的研究中文名稱：苯磺酰基取代的α无码精品A∨在线观看中文免费，β-不飽和酮的合成及其在不對稱催化Diels-Alder反應中的研究

This is the first example in the presence of catalytic amount of Lewis acid among this kind of transformations.

這是此類轉化反應的首例催化反應av天堂。。

Finding a suitable Lewis acid catalyst is the key to ensuring the realization of this reaction.

尋找合適的路易斯酸催化劑是實現這一反應的關鍵。

There are two adsorption states of methanol on Lewis acid sites of the catalyst, i.

二甲醚的生成是分子吸附態(tài)甲醇與臨近的解離吸附態(tài)甲醇相互作用的結果成年人小视频在线观看免费。

This paper gave an overall review of the application of lewis acid catalytic on various drug synthesis .

總結了路易斯酸在各種藥物合成反應中的催化作用自拍偷拍网第一页。