Whereas most N,N-difluoroaminoalkanes exhibit a single F-19 resonance at about +50 ppm, the tri-component mixtures of both N,N-difluoroaminopentanes and N,N-difluoroaminohexanes exhibited a more complex pattern. The individual 1-N,N-difluoroamino-, 2-N,N-difluoroamino- and 3-N,N-difluoroaminopentanes have been synthesized and their separated resonances are reported. (c) 2012 Elsevier B.V. All rights reserved.
Addition reactions of organometallic reagents to nitrogen trifluoride and enhanced alkyl–alkyl coupling by NF3
作者:Randolph K. Belter
DOI:10.1016/j.jfluchem.2015.03.013
日期:2015.7
A survey of the reaction of nitrogen trifluoride (NF3) with various organometallic reagents finds that organomagnesium (Grignard) reagents are the most useful for producing N,N-difluoroaminoalkanes. Alkyl–alkyl coupling is a persistant side reaction. Organolithiums are marginally effective. Organocopper, organozinc reagents undergo primarily alkyl–alkyl coupling catalyzed by the presence of NF3. Organocalcium
Difluoroalkylamines from high temperature vapor phase reactions of nitrogen trifluoride with alkanes, ethers and benzene
作者:Randolph K. Belter
DOI:10.1016/j.jfluchem.2011.07.024
日期:2011.11
At temperatures around 400 °C, nitrogentrifluoride (NF3) readily reacts with alkanes and benzene as well as ethers. In all cases, products were N,N-difluoroamines. This is in contrast to difluoroamination of benzylic substrates where the initial N,N-difluoroamines underwent eliminations or rearrangements and were not isolated. Cyclic and acyclic alkanes generated N,N-difluoroaminoalkanes. Benzene