Late-stage C–H functionalization of azines

CM Josephitis, HMH Nguyen, A McNally - Chemical reviews, 2023 - ACS Publications
Azines, such as pyridines, quinolines, pyrimidines, and pyridazines, are widespread
components of pharmaceuticals. Their occurrence derives from a suite of physiochemical …

Visible-light-induced organophotoredox-catalyzed difunctionalization of alkenes and alkynes

S Gupta, S Ghosh, A Chakraborty, A Hajra - Green Chemistry, 2023 - pubs.rsc.org
In the era of organic synthesis, the direct difunctionalization strategies of alkenes and
alkynes are very eminent, which open up an excellent route to introduce two functional …

Photodecarboxylative C–H Alkylation of Azauracils with N-(Acyloxy)phthalimides

SP Panda, SK Hota, R Dash, L Roy, S Murarka - Organic Letters, 2023 - ACS Publications
We disclose a transition-metal-free NaI/PPh3-mediated direct C–H alkylation of azauracils
using N-(acyloxy) pthalimides (NHPIs) as readily available alkyl surrogates under visible …

A General Electron Donor–Acceptor Photoactivation Platform of Diaryliodonium Reagents: Arylation of Heterocycles

P Meher, SP Panda, SK Mahapatra… - Organic …, 2023 - ACS Publications
We report a photoredox system comprising sodium iodide, triphenyl phosphine, and N, N,
N′, N′-tetramethylethylenediamine (TMEDA) that can form a self-assembled tetrameric …

Organophotoredox-Catalyzed Arylation and Aryl Sulfonylation of Morita–Baylis–Hillman Acetates with Diaryliodonium Reagents

S Senapati, SK Parida, SS Karandikar… - Organic Letters, 2023 - ACS Publications
We report an organophotoredox-catalyzed stereoselective allylic arylation of MBH acetates
with a palette of diaryliodonium triflates (DAIRs) to provide the corresponding trisubstituted …

Visible Light Photoredox-Catalyzed Direct C–H Arylation of Quinoxalin-2(1H)-ones with Diaryliodonium Salts

RK Samanta, P Meher, S Murarka - The Journal of Organic …, 2022 - ACS Publications
A photoredox-catalyzed direct arylation of quinoxalin-2-(1 H)-ones using diaryliodonium
triflates as the convenient, stable, and cheap aryl source is described. A broad variety of …

Visible-light-induced metal-free coupling of C (sp 3)–H sources with heteroarenes

A Ghosh, P Pyne, S Ghosh, D Ghosh, S Majumder… - Green …, 2022 - pubs.rsc.org
Development of an efficient, mild, economically viable, and green method for the
construction of a Csp2–Csp3 bond via coupling between a saturated hydrocarbon [(Csp3) …

Photocatalytic Alkylation/Arylative Cyclization of N-Acrylamides of N-Heteroarenes and Arylamines with Dihydroquinazolinones from Unactivated Ketones

S Bag, S Ojha, S Venugopalan… - The Journal of Organic …, 2023 - ACS Publications
We describe a visible-light photoredox-catalyzed alkylation/arylative cyclization of N-
acrylamides─ from 2-arylindoles, 2-arylbenzimidazoles, or N-substituted anilines─ with …

Visible-light-induced cascade reaction: a sustainable approach towards molecular complexity

S Ghosh, P Pyne, A Ghosh, S Choudhury… - Organic & Biomolecular …, 2023 - pubs.rsc.org
Photoredox catalysis has demonstrated rapid evolution in the field of synthetic organic
chemistry. On the other hand, the splendour of cascade reactions in providing complex …

Visible light-induced functionalization of indazole and pyrazole: a recent update

D Ghosh, S Ghosh, A Ghosh, P Pyne… - Chemical …, 2022 - pubs.rsc.org
Indazole and pyrazole are renowned as a prodigious class of heterocycles having versatile
uses in medicinal as well as industrial chemistry. Considering sustainable approaches …