Reaction of perfluoro-2-methyl-2-pentene with cycloalkanone oximes: new examples of the Beckmann—Chapman rearrangement
作者:V. F. Snegirev、M. Yu. Antipin、V. N. Khrustalev、Yu. T. Struchkov
DOI:10.1007/bf01558068
日期:1994.6
The base-catalyzed reaction of cycloalkanone oximes (la,b) with perfluoro-2-methyl-2-pentene (PFMP) initially affords the addition products,i.e., fluoroalkyl ethers (2a,b). In the presence of KOH, the latter undergoes dehydrofluorination to give perfluoroalkenyl ethers (3a,b). Thermolysis of ethers3a,b results in compounds of two types — pyrrolines (4a,b) andN-perfluoroalkenyl lactams (5a,b). The latter
环烷酮肟(Ia,b)与全氟-2-甲基-2-戊烯(PFMP)的碱催化反应最初提供加成产物,即氟烷基醚(2a,b)。在 KOH 存在下,后者发生脱氟化氢反应,得到全氟烯基醚 (3a,b)。醚 3a,b 的热解产生两种类型的化合物 - 吡咯啉 (4a,b) 和 N-全氟烯基内酰胺 (5a,b)。后者也由 PFMP 和相应的内酰胺制备。N-[全氟-(2-甲基-2-戊烯-3-基)]-2-吡咯烷酮(5c)的结构通过X-射线衍射研究确定。