Darstellung und Reaktionen von N‐Phenacyl‐N‐tosylhydroxylaminen und ‐hydrazinen

Preparation and Reactions of N ‐Phenacyl‐ N ‐tosylhydroxylamines and ‐hydrazines O ‐Alkyl‐ N ‐phenacyl‐ N ‐tosylhydroxylamines 3 were prepared in two steps from O ‐alkylhydroxylamines 1 . In the presence of a base the N ‐tosylhydroxylamines 3 undergo rearrangement and cleavage to N ‐tosylphenacylamine ( 5 ) and aldehydes 6 . N ‐Alkul‐ N ′‐phenacyl‐ N , N ′‐ditosylhydrazines 12 were obtained by stepwise treating of N , N ′‐ditosylhydrazine with alkyl halide and phenacyl bromide/potassium tert ‐butoxide/DMF.