Stereo- and Regiospecific Synthesis of Trisubstituted Alkenes via the Palladium-catalyzed Cross-coupling Reaction of Diisopropyl (<i>E</i>)-(1-Alkyl-1-alkenyl)boronates with Organic Halides
作者:Makoto Satoh、Norio Miyaura、Akira Suzuki
DOI:10.1246/cl.1986.1329
日期:1986.8.5
The reaction of diisopropyl (Z)-(1-bromo-1-alkenyl)boronates readily obtainable, with organolithiums and bases takes place readily to give (E)-(1-organo-1-alkenyl)boronates, the cross-coupling of which with various organichalides proceeds smoothly in the presence of Pd-catalyst and base to afford stereodefined trisubstituted alkenes in good yields.
The synthesis of conjugateddienones by means of palladium-catalyzed cross-coupling reaction between (E)-1-alkenyl-1,3,2-benzodioxaboroles or diisopropyl (Z)-1-hexenylboronate with 3-halo-2-alken-1-ones is described.