Selenium- and palladium-catalyzed oxidative cleavage of ene-lactams with hydrogen peroxide. Convenient methods for synthesis of macrocyclic ketoimides and N-fused azabicyclic compounds
Oxidative cleavage of ene-lactams can be performed efficiently by either SeO2 or Pd(OAc)2-catalyzed oxidation with H2O2 to give the corresponding ketoimides. The reaction provides convenient methods for the preparation of macrocyclic ketoimides and the construction of N-fused azabicyclic ring systems such as indolizidine and cephalotaxine skeletons.
烯内酰胺的氧化裂解可以通过SeO 2或Pd(OAc)2催化的H 2 O 2氧化有效地进行,以得到相应的酮酰亚胺。该反应为制备大环酮酰亚胺和构建N-稠合的氮杂双环体系如吲哚并立定和头孢他辛骨架提供了方便的方法。
ZAXARKIN, L. I.;CHURILOVA, I. M., ZH. ORGAN. XIMII, 23,(1987) N 10, 2146-2150