“…[1][2][3][4] Innumerable organic reactions including Buchwald-Hartwig, Heck, Sonogashira, and Suzuki-Miyaura reactions are usually palladium catalyzed and have significant role in medicinal chemistry. [5][6][7] However, despite frequent and fruitful use of such reactions, resulting high level residual palladium in the product, even after purification, may lead to health hazard.…”