BaylisâHillman adducts derived from enantiopure 1-alkenyl- or alkynyl-4-oxoazetidine-2-carbaldehydes are used for the stereoselective and divergent preparation of highly functionalised β-lactams fused to medium rings through novel, chemocontrolled tandem radical additionâcyclization sequences.
通过新颖的
化学控制串联自由基加成和环化顺序,从对映纯 1-烯基或炔基-4-氧代氮杂
环丁烷-2-羧醛衍生出的 BaylisâHillman 加合物被用于立体选择性和发散性制备与中环融合的高官能化 δ-内酰胺。