A synthesis of (E)-(1-organo-1-alkenyl)boronates by the palladium-catalyzed cross-coupling reaction of (E)-1,2-bis(boryl)-1-alkenes with organic halides: A formal carboboration of alkynes via the diboration-coupling sequence

Article abstract of DOI:10.1246/cl.1996.1117

(E)-1,2-Bis(boryl)-1-hexene, prepared by the platinum-catalyzed diboration of 1-hexyne with bis(pinacolato)diboron, regioselectively cross-coupled with aryl, 1-alkenyl, benzyl, and allyl halides in the presence of a palladium catalyst and a base to provide the corresponding pinacol esters of (E)-(1-butyl-1-alkenyl)boronic acid in good yields.