Unsaturated nitrogen compounds containing fluorine. Part 15 [1]. The reactions of 2,5-dichloro-1,1,1,6,6,6-hexafluoro-3,4-diazahexa-2,4-diene and its 2-amino derivative with enamines
作者:Mohamad M. Abdul-Ghani、Salim H.A. Benomar (in part)、Anthony E. Tipping
DOI:10.1016/0022-1139(94)03074-x
日期:1994.11
Reaction of the title dichloroazine (1) with the enamines NR2 [(4), NR2=Net2, n=2; (6), NR2=NEt2, n=3; (7), NR2=H2, n=2] gives initially the 2-substituted enamines C(CF3)=NN=CClCF3 (19a–c) which can undergo tautomerisation to the rearranged enamines R2N=C(CF3)NHN=CClCF3(20a–c). Further reaction of amine 20a takes place with dichloroazine 1 to afford the bicyclic compound CF3CCl=NNHCH(CF3)H2 (5) (34%)
标题二氯嗪(1)与烯胺NR 2 [(4),NR 2= Net 2,n= 2;n= 2。(6),NR 2= NEt 2,n= 3;(7),NR 2 = H2,n = 2]最初给出的是2-取代的烯胺C(CF 3)= NN = CClCF 3(19a–c),该胺可以进行互变异构化成重排的烯胺R 2 N = C(CF 3)NHN = CClCF 3(20a–c)。胺20a与二氯嗪1进一步反应,得到双环化合物CF 3 CCl = NNHCH(CF 3)H 2(5)(34%)。在硅胶上尝试纯化时,通过水解形成所有其他分离的产物,即19a →Et 2 N = C(CF 3)N = NCOCF 3(9)(23%);m / z 2(N )。19b →O =HC(CF)3= NN = CRCF 3 [R = Net 2(11)(21%);N = CRC(3)。R = NHEt(12)(17%)];19c →O