β-Ketonitrosamines as Synthetic Equivalents of α-Methinyl Methylamino (R-Chnhch₃) and α-Methinyl Alkylamino (R⁻Chnhr′) Anions

Abstract

β-Ketonitrosamines have been established as anionic synthons of the type (RCO^{+ −}CHNHR′). The enhanced acidity of protons at the α-carbon, as well as the ease of fragmentation of the title compounds, established them as synthetic equivalents of α-methylenealkylamino anions (⁻CH2NHR). We now report the equivalency of β-ketonitrosamines to α-methinyl methylamino (R⁻CHNHCH₃) and α-methinyl alkylamino (R ⁻CHNHR′) anions.