Mechanochemical aerobic oxidative Heck coupling by polymer-assisted grinding: cyclodextrin additive facilitating regioselectivity control

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(10), P. 5890 - 5899

Published: Jan. 1, 2024

A novel approach utilizing the polymer-assisted grinding (POLAG) technique to facilitate regioselective oxidative Heck coupling of aryl boronic acids with electronically unbiased olefins under solvent-free conditions was presented.

Language: Английский

Electron-Deficient CpRh(III)-Catalyzed C–H Functionalization of N-2-Pyridylanilines: Branch-Selective Alkenylation with Alkenes and Annulation with Alkynes

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

We report the electron-deficient CpRh(III) [CpERh(III)] complex-catalyzed branch selective alkenylation with aliphatic alkenes and annulation internal alkynes using N-2-pyridylanilines. In these reactions, CpERh(III) catalyst is more active than electron-rich Cp*Rh(III) catalyst, used commonly in C–H activation, reactions proceed a catalytic amount of Cu(II) oxidant under air at lower temperatures conventional methods. From mechanistic considerations, steric repulsion between ligand directing group may be responsible for alkenylation.

Language: Английский

Pd-NHC Catalyzed C-H Functionalization

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Language: Английский