N&Ns: The CF bond of trifluoromethylazoalkanes, in the presence of a hydrogen at the α carbon, is activated under basic conditions to form a difluoromethylene intermediate with a conjugated double bond, which is transformed in good yield to the corresponding 5-azido-(1-dialkylimino)tetrazole by reaction with NaN3.
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Abe et al. (2008) studied this question.
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