Synthesis of Annulated Carbazoles via FeCl3/SnCl4‑Mediated Domino Reaction of Vinyl Ketone Tethered Bromomethylindoles with Arenes and Heteroarenes
作者:Arasambattu K. Mohanakrishnan、Velu Saravanan
DOI:10.1055/a-1387-9479
日期:2021.7
One-potsynthesis of aryl- as well as heteroaryl-annulated carbazoles was achieved from 2/3-bromomethylindoles involvingLewisacidmediated domino reaction with arenes as well as heteroarenes via successive Friedel–Crafts intermolecular as well as intramolecular alkylations followed by elimination of acetone. Further, the bis-domino reaction of 2,5-bis(bromomethyl)pyrrole was also carried out with
Dhayalan, Vasudevan; Sureshbabu, Radhakrishnan; Mohanakrishnan, Arasambattu K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2011, vol. 50, # 6, p. 843 - 857
作者:Dhayalan, Vasudevan、Sureshbabu, Radhakrishnan、Mohanakrishnan, Arasambattu K.
DOI:——
日期:——
A one pot synthesis of annulated carbazole analogs
A ZnBr2-mediated arylation of N-protected 2/3-bromomethylindoles containing an electron-deficient malonylidene unit with arenes at 80 degrees C led to the formation of arylated products, which on Unprecedented 1,5-sigmatropic rearrangement followed by electrocyclization and subsequent aromatization with loss of diethylmalonate furnished the corresponding annulated carbazoles in reasonable yields. (C) 2008 Published by Elsevier Ltd.