Abstract A wide range of α-diazo-β-ketosulfones have been applied to thermally promoted tandem Wolff rearrangement – Staudinger [2+2] cycloaddition with imines to give polysubstituted β-lactam sulfones. Diastereomerically pure syn-diastereomers were obtained in good yields and the relative stereochemistry was confirmed by single-crystal X-ray crystallography. These findings significantly expand the
摘要 广泛的α-重氮-β-酮砜已用于热促进串联式Wolff重排– Staudinger [2 + 2]与
亚胺的环加成反应,得到多取代的β-内酰胺砜。以高收率获得非对映体纯的顺-非对映异构体,并且通过单晶X射线晶体学证实了相对立体
化学。与先前报道的实质性限制相比,这些发现大大扩展了这种转变的范围。而且,这种方法能够灵活地探索特权β-内酰胺核周围的新取代模式,以进行药物设计和优化。