Asymmetric Synthesis of Terminal N-tert-Butylsulfinyl Aziridines from Organoceriums and an α-Chloroimine
摘要:
Addition of N-(2-chloroethylidene)-tert-butylsulfinamide to organocerium reagents in DMPU/THF (1:10) at -78 degrees C followed by warming to 25 degrees C provides terminal N-tert-butylsulfinyl aziridines in good yields (63-92%, nine examples) and diastereomeric ratios (85:15->99:1).