在某些肟中,重排会产生腈类,这种被称为Beckmann Elimination或Beckmann fragmentation或者abnormal Beckmann rearrangement。 反应机理 ✦ 反应实例 ✦ 反应操作(ref.9)✦ To a solution of syn-3-ethoxy-2-cyclohexen-1-one (1.0g, 6.5 mmol) in anhyd THF (25 mL) was added Et3N (1.8 mL) at 0–5...
The Journal of Organic Chemistry 2002, 67, 17, 6272-6274 评述 Beckmann rearrangement 最重要的工业应用在于从环己酮生成 己内酰胺,这是用于制备聚己二酰己二胺(俗称尼龙 66)的单体。该 反可以应用于制备环内酰胺或者链状酰胺。目前主要集中在研究该反 应在更温和条件和催化条件下进行。 参考 1. a)László K...
Beckmann rearrangement最重要的工业应用在于从环己酮生成己内酰胺,这是用于制备聚己二酰己二胺(俗称尼龙66)的单体。 该反可以应用于制备环内酰胺或者链状酰胺。目前主要集中在研究该反应在更温和条件和催化条件下进行。 参考 1. a)László Kürti, Barbara Czakó. StrategicApplications of Named Reactions in Organic S...
Oximes can be catalytically transformed to amides by different inorganic solid materials following molecular rearrangement processes (Beckmann reactions). These reactions take place in "dry media" conditions, i.e. without any solvent, at relative low temperature (100掳-160掳C). The yield and the ...
2) Beckmann rearrangement reaction 贝克曼重排反应 1. Beckmann rearrangement reaction is that amide is formed by ketoxime under the condition of acid catalyzer. 酮肟在酸性催化剂作用下,生成酰胺的反应称为“贝克曼重排反应”。 更多例句>> 3) Beckmann rearrangement 贝克曼重排反应 1. Beckmann ...
Comprehensive Experimental Design and Teaching Application of Beckmann Rearrangement Reaction Jianzhong Zhou, Ming Guo *, Houhuang Tao, Zetao Zheng School of Chemical and Material Engineering, Zhejiang A&F University, Hangzhou 311300, China. Abstract: The Beckmann rearrangement, a pivotal reaction where...
oximeinthepresenceofdiffer2entLewisacidcatalystsuchasPCl5,H2SO4,HCl-Ac2O,H2SO4-Ac2O,H3PO4-Ac2O,PPAandHCl-Ac2O-AcOHwerestudied.TheresultsuggestedthatH3PO4-Ac2OwasaneffectiveandsuitablecatalystoftheBeckmannrearrangementreactionofdiphenyl2methanoneoxime.Keywords:diphenyl2methanoneoxime,Beckmannrearrangement,Lewis...
1.Beckmann rearrangement reaction is that amide is formed by ketoxime under the condition of acid catalyzer.酮肟在酸性催化剂作用下,生成酰胺的反应称为“贝克曼重排反应”。 3)Beckmann rearrangement贝克曼重排反应 1.Beckmann rearrangement of erythromycin A(E) oxime;红霉素E肟贝克曼重排反应的研究 2.Studies...
expounds comprehensively on research and development of cyclohexanone-oxime gas phase Beckmann rearrangement reaction process and catalyst. 对环己酮肟气相贝克曼重排反应工艺和催化剂的研究进展进行了综述。 更多例句>> 6) Beckmann rearrangement Beckmann重排 1. Liquid-phase Beckmann rearrangement of cyclohexanon...