Abstract
Mixtures of the respective 2-(N,N-dibenzylamino)-1-chloro- and 1-(N,N-dibenzylamino)-2-chlorophosphonates were obtained after mesylation of dimethyl (1R,2S)-2-(N,N-dibenzylamino)-1-hydroxy-3-methylbutylphosphonate and diethyl (1R,2S)-2-(N,N-dibenzylamino)-1-hydroxy-3-phenylpropylphosphonate with mesyl chloride in the presence of tetraethylammonium chloride. These mixtures are considered as useful precursors to α -phosphonylated aziridinium ions.
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