Palladium-catalyzed synthesis of pyrimido[5’,4’:3,4]pyrrolo[1,2-f]phenanthridine-12,14(11H,13H)-diones and related compounds
作者:M. A. Shevchenko、Y. N. Tkachenko、A. V. Astakhov、O. V. Khazipov、R. V. Tyurin、D. V. Pasyukov、V. A. Tafeenko、O. A. Kravchenko、V. M. Chernyshev
DOI:10.1007/s11172-018-2277-2
日期:2018.9
Representatives of the new heterocyclic system, pyrimido[5’,4’:3,4]pyrrolo[1,2-f]phenanthridine, were obtained via the intramolecular C–H-arylation of 6-aryl-5-(2-bromophenyl) pyrrolo[3,4-d]pyrimidine-2,4-diones catalyzed by palladium complexes with N-heterocyclic carbene ligands (Pd/NHC).
Transition metal-free visible light induced intramolecular C–Hal/C–H bond activation leading to cyclization into pyrimido[5′,4′:3,4]pyrrolo[1,2-f ]phenanthridines
作者:Alexander V. Astakhov、Yurii N. Tkachenko、Igor V. Lavrentev、Dmitry V. Pasyukov、Maxim A. Shevchenko、Victor M. Chernyshev
DOI:10.1016/j.mencom.2024.02.026
日期:2024.3
unprecedented transitionmetal-freevisible light-induced autocatalytic intramolecularC–Hal (Hal = Cl, Br, I)/C–Hbondactivationleading to the formation of a new C–C bond between spatially converged benzene rings has been disclosed. In fact, irradiation of 5,6-diaryl-1-pyrrolo- [3,4- ]pyrimidine-2,4-diones with 395 nm LED light at room temperature promotes their cyclization to pyrimido[5′,4′:3,4]- pyrrolo[1