Halogen exchange reactions of perhalo-3-azaalkenes and their subsequent dehalogenation to form hetero-1,3-dienes
摘要:
Treatment of the perhalogenated azaalkenes, RxCF = NCF2CFXBr (R(x) = CF3, C2F5, ClCF2; X = F, CF3) with AlCl3 readily produces new imines of the type RxCCl = NCCl2CFXBr and RxCCl2N = CClCFXBr. Dehalogenation of these new imines using activated zinc dust affords a series of novel hetero-1,3-dienes (RxCCl = NCCl = CFX).