作者:Abraham L. Moure、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1039/c1cc11949d
日期:——
The alpha,beta-unsaturated sulfones are suitable activated olefins in catalytic asymmetric conjugate beta-boration. These substrates undergo smooth conjugate addition of bis(pinacolato)diboron [B(2)(pin)(2)] catalyzed by nonracemic Cu(I)-diphosphine complexes to provide, upon subsequent oxidation, beta-hydroxy sulfones in good yields and high enantiocontrol.
α,β-不饱和砜是催化不对称共轭β-硼酸酯化反应中合适的活化烯烃。这些底物通过非外消旋的Cu(I)-二膦配合物催化双(pinacolato)diboron [B(2)(pin)(2)]的平滑共轭加成,从而在随后的氧化反应中,以高收率和高收率提供β-羟基砜对映体控制。