Highly efficient and well-defined phosphinous acid-ligated Pd(ii) precatalysts for Hirao cross-coupling reaction

Well-defined Ph 3 P-PdCl 2 -PAd 2 (OH) is a highly efficient precatalyst that catalyses C SP 2 –P bond formation. The bulky Ad 2 P(O)H is a good preligand and the less bulky (tolyl) 2 P(O)H could be the reagent in the reported Hirao coupling.