Solventless Decarbonylative Coupling Catalytic System

Ligand-Free and Solvent-Free

A ruthenium-based catalytic system that achieves highly chemoselective decarbonylative coupling of indole esters with arylboronic acids without ligands, bases, or organic solvents.

Zhang, Jin · Jiaojiao, Zhang · Yan, Wenxuan · Nana, Chen · Shang, Linqin · Jiaojiao, Wu · Szostak, Michal L.

ACS Sustainable Chemistry & Engineering 2026

Advantages

First ruthenium-catalyzed decarbonylative cross-coupling under mechanochemical conditions

No added ligands, bases, or organic solvents

Highly chemoselective coupling with common arylboronic acids