Keywords:Fries rearrangement,mechanism, application. 1、引言 (弗莱斯重排;福莱斯重排)是酚酯在Friedel-Crafts反应的催化剂或路易斯酸催化下酰基从氧原子上迁移至苯环的邻位或对位的重排反应成为Fries重排。该重排属于芳香族亲电重排,迁移基作为亲电试剂进攻芳环,主要得到邻位和对位产物。该反应由德国化学家Karl Theophil...
浅谈Fries重排反应在有机合成中的应用_史春越
2.The transition-states ofrearrangement reactionof the stable structure of F 2CCLiBr have been determined, and the potential barriers ofrearrangement reactions have been obtained at B3LYP/6-31G(d,p) level.对稳定的平衡结构 ,找到了其可能的重排反应过渡态 ,根据计算得到的重排反应势垒 ,解释了氟原子...
关键词:Fries重排 机理 应用 Abstract:This paper from the Fries rearrangement reaction of the definition, mechanism, the catalytic conditions and reaction selectivity of the reaction to make a simple discussion, this paper introduces the application of the rearrangement reaction about organic synthesis. ...
The aluminum chloride-catalysed rearrangement of phenyl acetate to p- and o-hydroxyacetophenones has been carried out in the presence of acetic anhydride-1-c 14 in petroleum benzine, nitrobenzene or ethylene dichloride as solvent. The analysis of the radioactivities of formed o- and p-...
IN continuation of the study of the mechanism of the Fries reaction 1 , a systematic investigation of the effect of medium on the rearrangement of phenyl (I; R =H)- and p -cresyl(I ; R =CH 3 )-hydrogen succinate in presence of anhydrous aluminium chloride has been carried out. The ...
The mechanism for the photo-Fries rearrangement of phenyl acetate and biphenylyl acetates were reinvestigat- ed in phenol (or phenol derivatives) containing media. The results showed that the phenol (or phenol deriva- tives) which is the most common by-product of Fries reaction reacts with ...
The macrolactam 1 was synthesized from its precursor benzoate ester by a high yielding photo-Fries rearrangement. P Magnus,C Lescop - 《Cheminform》 被引量: 135发表: 2002年 Photocatalytic degradation of poly(bisphenol-A-carbonate) in solution over combustion-synthesized TiO2: mechanism and kinetics...
A、克莱森重排(Claisen rearrangement) B、威廉姆逊醚合成(Williamson ether synthesis) C、狄尔斯-阿尔德反应(Diels-Alder reaction) D、 傅瑞斯重排( Fries rearrangement) 你可能感兴趣的试题 单项选择题 一个LR(1)文法合并同心集后若不是LALR(1)文法( )。
reaction mechanism was found to consist of the direct O-benzoylation with formation of resorcinol monobenzoate, while no primary formation of the product of C-benzoylation (2,4-dihydroxybenzophenone) occurred. The latter product formed exclusively by consecutive Fries rearrangement upon the benzoate....