Synthesis of N-Alkyl-Substituted Aziridines and Oxazolidine Based on Levoglucosenone Derivatives

Diastereomeric oxazolidines were obtained in quantitative yield by boiling levoglucosenone (cyrene) derivative in benzene with ethanolamine. Sterocontrolled synthesis of N-propyl, -butyl, -lauryl aziridines annulated with a pyran ring based on the α-bromoderivative of levoglucosenone and the corresponding amines was carried out under ultrasonic irradiation of the mixture in the presence of an accessible base K₂CO₃ and catalytic amounts 18-crown-6-ether in toluene. The obtained nitrogen-containing heterocycles are promising in terms of structure–activity studies in the synthesized series of compounds.