Photodifluoramination of a series of HEXAFLUOROACETONE IMINE (cas 1645-75-6)s
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Add time:08/06/2019 Source:sciencedirect.com
Gas phase irradiation of N2F4 (NF2) in the presence of hexafluoroacetone imine (I), N-chlorohexafluoroacetone imine (II), or N-bromohexafluoroacetone imine (III) resulted in the formation of products that correspond to either perhalogenation of the unsaturation or conversion of the substrate to a saturated halocarbon. The mechanism suggested involves the formation of an imino radical that reacts with N2F4(NF2) to produce N,N-difluorohydrazone, (CF3)2CNNF2. A bimolecular homolytic displacement (SH2′) by Cl and F on the hydrazone forms an intermediate diazene which leads to the observed products. N-fluorohexafluoroacetone imine is inert to F atoms and NF2 under the reaction conditions.
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