Highly Stereoselective Synthesis of Functionalized β,β-Di- and Trisubstituted Vinylic Sulfoxides by Cu-Catalyzed Conjugate Addition of Organozinc Reagents
β,β-Disubstituted chiral vinylic sulfoxides bearing functionalities have been synthesized via Cu-catalyzed conjugateaddition of organozincreagents to chiral 1-alkynyl sulfoxides. Due to the availability of functionalized organozincreagents and high syn-selectivity of the reaction, both geometric β,β-disubstituted vinylic sulfoxides were selectively synthesized. Furthermore, 1-alkynyl sulfoxides