Stereospecific conversion of chiral 1,2-cyclic sulfates to chiral imidazolines
摘要:
The one pot preparation of imidazolines from 1,2-cyclic sulfates is reported. Amidines react with cyclic sulfates to give zwitterionic intermediates, and subsequent intramolecular cyclization affords imidazolines. The preparation of enantiopure stilbene diamine (stien) is achieved by the hydrolysis of its corresponding chiral imidazoline.