¹³C NMR study of N‐unsubstituted aziridines: I—steric effects, pseudoconjugation

Abstract

Abstract 13 C chemical shifts for twenty‐nine alkyl and phenyl substituted N‐unsubstituted aziridines have been measured. Additivity parameters for methyl, phenyl and aziridyl carbons have been derived with the aim of testing the consistency of the assignments made on the basis of chemical shift considerations and off‐resonance decoupling information. The observed chemical shifts are discussed in terms of steric and pseudoconjugation effects.