Stephen L. Buchwald (1955)

American chemist, professor at the Massachusetts Institute of Technology (MIT). Since 1994 he has developed palladium-catalysed C–N and C–O bond formation, the Buchwald–Hartwig amination.

His group designed the dialkylbiarylphosphines (XPhos, SPhos, BrettPhos and others), ligands that allow aryl chlorides to be coupled and that are now used in almost every type of cross-coupling.

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