The N-tert-butanesulfinylimine group behaves as a suitable electron-withdrawing group in 1-azadienes, allowing the diastereoselective synthesis of densely substituted pyrrolidines by 1,3-dipolar cycloadditions (1,3-DCs) with azomethylene ylides. The use of Ag2CO3 as catalyst has allowed one to obtain a wide variety of proline derivatives with high regio- and diastereoselectivities. Subsequent efficient
N-叔
丁烷亚磺
酰亚胺基团在1-氮杂二烯中充当合适的吸电子基团,允许通过与偶氮亚甲基叶立德的1,3-偶极环加成(1,3-DC)非对映选择性合成密集取代的
吡咯烷。使用Ag 2 CO 3作为催化剂使得人们能够获得多种具有高区域选择性和非对映选择性的脯
氨酸衍
生物。随后的有效转化提供了有价值的脯
氨酸衍
生物,其中一些可以用作有机催化剂。通过计算方法研究了N-叔丁亚磺酰基对非对映选择性的影响。