Coupling and cross-coupling ranks among the most studied reactions from our search and among the hetero-coupling reactions Suzuki coupling is the most studied (Table ). This is sensible as Suzuki coupling is a widely used method for making carbon-carbon bonds between organoboron compounds and organic halides or triflates, using a palladium catalyst and a base. It has many advantages over other coupling methods, such as easy availability and stability of organoboron compounds, mild reaction conditions, high functional group tolerance, and low toxicity and environmental impact. Suzuki coupling plays a prominent role in medicinal chemistry. For these reasons Suzuki coupling has been a prime target in the search for more sustainable catalysts. Famously, there have been examples of reports where authors claimed to demonstrate palladium-free Suzuki coupling that were later shown to be catalyzed from palladium contamination.