p-Toluenesulfonyl (Tosyl) and nitrobenzenesulfonyl (Nosyl) are two of the most common sulfonyl protecting groups for amines in contemporary organic synthesis. While p-toluenesulfonamides are known for their high stability and robustness, their use in multistep synthesis is plagued by difficult removal. Nitrobenzenesulfonamides, on the other hand, are easily cleaved but display limited stability to
                                    对
甲苯磺酰基 (Tosyl) 和
硝基苯磺酰基 (Nosyl)是当代有机合成中最常见的两种胺磺酰基保护基团。虽然对
甲苯磺酰胺以其高稳定性和稳健性而闻名,但它们在多步合成中的使用却受到难以去除的困扰。另一方面,
硝基苯磺酰胺很容易裂解,但对各种反应条件的稳定性有限。为了解决这个难题,我们在此提出了最初通过计算机研究开发的 Nms-酰胺,它克服了之前的这些限制并且没有妥协的余地,从而实现了传统磺酰胺保护基团不可能实现的一系列转化。