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Polymethylhydrosiloxane (PMHS)/trifluoroacetic acid (TFA) was discovered as a novel metal-free system for reductive amination reactions. A variety of (het)aryl amines as well as a representative carbamate and urea were successfully alkylated by benzaldehyde in the presence of PMHS and TFA in dichloromethane at room temperature in moderate to excellent yields (28–87%). Furthermore, this reaction protocol...
Reaction of N-sulfonylimines 2 with N,N-dialkylcarbamoylmethyl dimethylsulfonium bromides 3 in the presence of solid KOH gives the aziridinyl carboxamides 4 in good to excellent yields.
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