organocatalytic Beckmannrearrangement of ketoximes into amides has been realized by the catalytic use of cyanuric chloride. Furthermore, acids such as HCl and ZnCl2 are effective as cocatalysts with cyanuric chloride. For example, azacyclotridecan-2-one, which is synthetically useful as a starting material for nylon-12, was prepared in quantitative yield by the Beckmannrearrangement of cyclododecanone
Cyclopropenium ion catalysed Beckmann rearrangement
作者:Vishnu P. Srivastava、Rajesh Patel、Garima、Lal Dhar S. Yadav
DOI:10.1039/c0cc00815j
日期:——
1-Chloro-2,3-diphenylcyclopropenium ion was found to be a very efficient organocatalyst (3 mol% loading) for liquid phase Beckmann rearrangement of various ketoximes to the corresponding amides/lactams within 2 h in acetonitrile at reflux temperature. This is the first example of the application of the cyclopropeniumion as a catalyst, which opens up a new aspect of the synthetic utility of aromatic
Preparation and Allylation of Enamides and Enecarbamates Generated via Iron(0) Reduction of Oximes and Derivatives
作者:Steven Weinreb、Cuixiang Sun
DOI:10.1055/s-2006-942513
日期:2006.11
Reductive acylation of oximes and oxime carbonates can be effected with iron powder in the presence of an acid chloride or a chloroformate to produce enamides or enecarbamates.
用铁粉在酸氯化物或氯甲酸酯存在下进行亚胺和亚胺碳酸酯的还原酰化,可生产出烯酰胺或烯碳酸酯。
Synthesis of α-Deuterated Primary Amines <i>via</i> Reductive Deuteration of Oximes Using D<sub>2</sub>O as a Deuterium Source
作者:Lei Ning、Hengzhao Li、Zemin Lai、Michal Szostak、Xingyue Chen、Yanhong Dong、Shuhui Jin、Jie An
DOI:10.1021/acs.joc.0c02829
日期:2021.2.5
chemoselectivity and tolerates a variety of functional groups. The potential application of this new method was showcased in the synthesis of deuterated drugs, such as rimantadine-d4, the tebufenpyrad analogue, derivatives of nabumetone and pregnenolone, and a series of building blocks for the rapid and general assembly of deuterated drugs and pesticides.