摘要:
The electrophilically catalyzed splitting of the N-O bond of dimethoxyamine results in the formation of methoxynitrenium ion, which in reaction with nucleophiles exhibits properties of an ambidentate cation - it methylates rigid nucleophiles and epiminates olefins. The stereospecificity of the addition of the nitrenium ion to cis-2-butene indicates its existence in a singlet electronic ground state.