A short, efficient and general methodology for benzo[b]carbazolenaphthoquinones was developed via Pd‐catalyzed C‐H arylation process. This methodology was successfully applied to the synthesis of highly biologically active compound 5H–benzo[b]carbazole‐6,11‐diones. Additionally, one‐pot synthesis of benzo[b]phenazine‐6,11(5H,12H)‐dione derivatives was also explored in aqueous medium.
通过Pd催化的CH-H芳基化过程,开发了一种简短,高效且通用的苯并[ b ]咔唑萘醌方法。该方法已成功地用于合成具有高生物活性的化合物5H-苯并[ b ]咔唑-6,11-二酮。此外,还研究了在水介质中一锅法合成苯并[ b ]吩嗪-6,11(5H,12H)-二酮衍生物。
10.1039/d4nj00993b
作者:Krishnan, Ashokkumar、Kamaraj, Sriraghavan
DOI:10.1039/d4nj00993b
日期:——
We designed a robust and efficient greener synthetic protocol to access p-quinone fused 5-substituted-1,4-benzodiazepine scaffolds, a new molecular hybrid, through InCl3 mediated Pictet–Spengler type cycloannulation of 2-amino-3-arylamino-p-quinone and commercially prevalent aldehydes. This protocol would ease access to privileged redox-active p-quinone fused seven-membered frameworks that are difficult
A palladium-catalyzed one-pot reaction for the synthesis of benzo[b]carbazolediones is described which proceeds by amination of 2,3-dibromonaphthoquinone, Suzuki cross-coupling with (2-bromophenyl)boronic acid, and subsequent intramolecular C-N Buchwald-Hartwig cyclization with amines.
3, 4-Benzotropolone and Related Compounds. I. Bromo Derivatives of 3, 4-Benzotropolone