-quaternary centers via regioseletive C-C bond activation has been described. Through cyclopropanation of bench-stable enaminones with in situ generated diazo reagents from N-tosylhydrazones, followed by selective C-C bond cleavage of the cyclopropane ring affords the 1, 4-ketoaldehyde derivatives in good to excellent yields. This method works with broad substrate scope and high regioseletivity.
已经描述了一种有效的方法,该方法通过区域选择性CC键活化来构建带有全碳原子的α-季中心的官能化的1,4-酮醛。通过使用原位生成的N-
甲苯磺酰hydr酮重
氮试剂对稳定的烯胺酮进行
环丙烷化,然后选择性地将CC裂解成
环丙烷环,可得到1,4-酮醛衍
生物,收率好至极佳。该方法适用于较宽的底物范围和较高的重复性。