Stereoselective Synthesis of (<i>E</i>)-(Trisubstituted alkenyl)borinic Esters: Stereochemistry Reversed by Ligand in the Palladium-Catalyzed Reaction of Alkynylborates with Aryl Halides
The palladium-catalyzedreaction of alkynylborates with arylhalides stereoselectively gave (E)-(trisubstituted alkenyl)-9-BBNs, in which two different aryl groups were installed trans to each other.