Fluorocarbon derivatives of nitrogen. Part 14. Studies on some (CF3)2 no-substituted fluoroaromatics; thermal rearrangement of 4-[bis(trifluoromethyl)amino-oxy]tetrafluoropyridine
作者:Ronald E. Banks、M.Sami Falou、Roy Fields、Nureni O. Olawore、Anthony E. Tipping
DOI:10.1016/s0022-1139(00)83031-6
日期:1988.1
luoropyridine (II) gave a mixture of 6-bis(trifluoromethyl)amino]tetrafluoro-4-azacyclohexa-2, 4-dienone (XV) and 4-[bis(trifluoromethyl)amino]tetrafluoro-4-azacyclohexa-2,5-dienone (XVI). The 13C chemical shifts, assigned by analysis of 19F-coupled and 19F broad-band decoupled 13C n.m.r. spectra, are in accord with a +M effect similar to that of fluorine for a (CF3)2NO- substituent in the 2- and 4-
钠盐(CF 3)2 NO - Na +(I)[来自(Et 2 O中的(CF 3)2 NOH + NaH ]]是加合物(CF 3)2的替代双(三氟甲基)氨基氧基化剂NOH.CsF(III)。用五氟吡啶提供4-XC 5 F 4 N(II)+ 2,4-X 2 .C 5 F 3 N(IV),[X =(CF 3)2 NO]。它已被用来获得许多新的双(三氟甲基)氨基氧基化合物。即进行了以下转化:全氟-(4-异丙基吡啶)→2-XC5 F 3 N.CF(CF 3)2 -4(V)+ 2,6-X 2 .C 5 F 2 N.CF(CF 3)2 -4(VI);3-氯四氟吡啶→4-XC 5 F 3 N.Cl-3(VII)和2-XC 5 F 3 N.Cl-5(VIII)(未分离)+ 2,4-X 2 .C 5 F 2 N .Cl-5(IX),3,5-二氯三氟吡啶→2-(XI)和4-XC 5 F 2 N.Cl 2 -3,5(X)(未分离)+