Abstract
Recent studies highlight the importance and application of parts per million (ppm) palladium concentration in catalytic reactions. Lowering catalyst loading minimizes costs, simplifies purification, and reduces metal contamination, making it highly attractive for pharmaceutical and fine chemical manufacturing. Here, we report a ppm level Pd-catalyzed remote arylation reaction of alkenols, achieving high efficiency, regioselectivity, and flexible carbonyl scaffold construction. Notably, this strategy exhibits excellent compatibility with styrene-derived substrates and has been successfully achieved on a gram scale, providing a solid foundation for potential large-scale applications.