Benzannulation strategies for the synthesis of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines

A Banerjee, S Kundu, A Bhattacharyya… - Organic Chemistry …, 2021 - pubs.rsc.org
Nitrogen-containing π-excessive aromatic heterocycles, in particular, carbazoles,
indolocarbazoles, benzocarbazoles, and carbolines have been considered the fundamental …

Transition metal-catalyzed coupling of heterocyclic alkenes via C–H functionalization: recent trends and applications

SV Kumar, S Banerjee, T Punniyamurthy - Organic Chemistry Frontiers, 2020 - pubs.rsc.org
Heterocyclic alkenes represent an important class of reactive feedstock and valuable
synthons for the synthesis of biologically important heterocyclic scaffolds. Although …

Three-Component 1,2-Carboamidation of Bridged Bicyclic Alkenes via RhIII-Catalyzed Addition of C–H Bonds and Amidating Reagents

DS Brandes, A Sirvent, BQ Mercado, JA Ellman - Organic letters, 2021 - ACS Publications
A three-component method is described for the preparation of syn-1, 2-disubstituted bridged
bicyclic compounds. The reaction was demonstrated for readily available aromatic and …

Rh(III)-Catalyzed C–H Cyanation of 2H-Indazole with N-Cyano-N-phenyl-p-toluenesulfonamide

J Li, L Shi, SP Zhang, XY Wang, X Zhu… - The Journal of …, 2020 - ACS Publications
A Rh (III)-catalyzed direct cyanation of 2 H-indazoles with N-cyano-N-phenyl-p-
toluenesulfonamide has been realized via a chelation-assisted strategy. The methodology …

Rhodium III-catalyzed remote difunctionalization of arenes assisted by a relay directing group

L Sun, Y Zhao, B Liu, J Chang, X Li - Chemical Science, 2022 - pubs.rsc.org
Rhodium-catalyzed diverse tandem twofold C–H bond activation reactions of para-olefin-
tethered arenes have been realized, with unsaturated reagents such as internal alkynes …

Transition‐Metal‐Catalyzed Directing Group Assisted (Hetero) aryl C− H Functionalization: Construction of C− C/C‐Heteroatom Bonds

T Sarkar, TA Shah, PK Maharana… - The Chemical …, 2021 - Wiley Online Library
Transition‐metal‐catalyzed C− H functionalization is one of the fascinating scientific fronts in
organic synthesis for the formation of conjugated arenes and has emerged as a benchmark …

Rhodium-Catalyzed Directed C(sp2)–H Bond Addition of 2-Arylindazoles to N-Sulfonylformaldimines and Activated Aldehydes

AK Ghosh, P Ghosh, A Hajra - The Journal of Organic Chemistry, 2020 - ACS Publications
Rhodium-catalyzed directed C–H functionalization of 2-arylindazoles with N-
sulfonylformaldimines has been developed to provide a variety of N-benzylarylsulfonamide …

Rhodium-Catalyzed Annulations and Heck Coupling/Aza-Michael Addition for the Synthesis of Benzothiadiazinoisoquinoline 6, 6-Dioxides and …

S Kumaran, K Parthasarathy - The Journal of Organic Chemistry, 2022 - ACS Publications
A new and efficient protocol has been demonstrated for the synthesis of
benzothiadiazinoisoquinoline 6, 6-dioxides and benzothiadiazinoisoindole 5, 5-dioxides in …

Rhodium (iii)-catalyzed ortho-C–H amidation of 2-arylindazoles with a dioxazolone as an amidating reagent

P Ghosh, S Samanta, A Hajra - Organic & Biomolecular Chemistry, 2020 - pubs.rsc.org
A simple and efficient method for the directed amidation of a wide range of 2-arylindazoles
has been established for the first time through a rhodium-catalyzed C–H activation reaction …

One-Pot Synthesis of Benzo[c]phenanthridine Alkaloids from 7-Azabenzonorbornadienes and Aryl Nitrones

N Aravindan, M Jeganmohan - Organic Letters, 2023 - ACS Publications
An efficient synthesis of benzo [c] phenanthridine alkaloids via a synergistic combination of
C–C bond formation and a cycloaromatization reaction is described. Aryl nitrones react with …