2-Alkenyl p-tolyl sulfones were converted into the corresponding 3-acetoxy(or chloro)-1-alkenyl p-tolyl sulfones via π-allylpalladiumcomplexes which reacted regiospecifically with a nucleophile such as acetate anion or chloride anion in the presence of Cu(II).
2-烯基对甲苯基砜通过 π-烯丙基钯配合物转化为相应的 3-乙酰氧基(或氯)-1-烯基对甲苯基砜,该配合物在 Cu 存在下与乙酸根阴离子或氯阴离子等亲核试剂发生区域特异性反应(二)。
An Efficient Procedure for Preparing γ-Hydroxy α,β-Unsaturated Sulfones
Chromium(II)-mediated Barbier condensation of β-iodovinyl p-tolylsulfone with aldehydes and β-ionone afforded the title hydroxysulfones in good to excellent yields.
铬 (II) 介导的 β-碘乙烯基对甲苯基砜与醛和 β-紫罗兰酮的 Barbier 缩合以良好至极好的产率提供标题羟基砜。
Copper-Catalyzed Oxidative Hydrosulfonylation of Alkynes Using Sodium Sulfinates in Air
作者:Nobukazu Taniguchi
DOI:10.1055/s-0031-1290934
日期:2012.5
Copper-catalyzed hydrosulfonylations of alkynes can be carried out using sodium sulfinates in air. The procedure affords syn-selectively (E)-alkenyl sulfones in good yields. Then, both terminal and internal alkynes are available.