Experimental and Theoretical Study of an Intramolecular CF<sub>3</sub>-Group Shift in the Reactions of α-Bromoenones with 1,2-Diamines
作者:Vasily M. Muzalevskiy、Yury A. Ustynyuk、Igor P. Gloriozov、Vyacheslav A. Chertkov、Alexander Yu. Rulev、Evgeniy V. Kondrashov、Igor A. Ushakov、Alexey R. Romanov、Valentine G. Nenajdenko
DOI:10.1002/chem.201502706
日期:2015.11.16
The reactions of trifluoromethylated 2‐bromoenones and N,N′‐dialkyl‐1,2‐diamines have been studied. Depending on the structures of the starting compounds, the formation of 2‐trifluoroacetylpiperazine or 3‐trifluoromethylpiperazine‐2‐ones was observed. The mechanism of the reaction is discussed in terms of multistep processes involving sequential substitution of bromine in the starting α‐bromoenones
研究了三氟甲基化的2-溴代烯酮与N,N'-二烷基-1,2-二胺的反应。根据起始化合物的结构,观察到2-三氟乙酰基哌嗪或3-三氟甲基哌嗪-2-酮的形成。从多步过程的角度讨论了反应机理,该过程涉及在起始α-溴烯酮中依次取代溴,以及作为关键中间体形成目标杂环的俘获性氨基烯酮的分子内环化。理论计算结果与实验数据完全吻合。证明了三氟甲基在该反应中的独特作用。