Solvent-free copper-catalyzed trisilylation of alkynes: a practical and atom-economical approach for accessing 1,1,1-trisilylalkanes

Copper-catalyzed 1,1,1-trisilylation of alkynes was developed with Cu(OAc) 2 and P n Bu 3 . Mechanistic studies reveal that this reaction occurs through sequential dehydrogenative silylation of alkynes and dihydrosilylation of alkynylsilane intermediates.