dialkylation of alkene is an efficient protocol for constructing useful chemicals, but challenges remain in the unrestricted application of alkylating reagents. Alkyl bromide belongs to the easy-to-access and operable alkyl electrophiles that can be used in reductivecoupling with alkenes. Here, we reported convenient strategies for dialkylcyclization and homodialkylation of unactivated β,γ- and γ,δ-unsaturated
Regiodivergent sulfonylation of terminal olefins <i>via</i> dearomative rearrangement
作者:Ever A. Blé-González、Stephen R. Isbel、Olatunji S. Ojo、Patrick C. Hillesheim、Matthias Zeller、Alejandro Bugarin
DOI:10.1039/d3nj03595f
日期:——
Sulfones are fascinating and highly used functional groups, but current syntheses still have limitations. Here, a regiodivergent transition metal-free approach towards sulfones [(E)-allylic sulfones and α-sulfonylmethyl styrenes] is reported. The method employs commercially available olefins, bases, additives, solvents, and sodium sulfinates (RSO2Na) and produces adducts in good yields. Considering
砜是令人着迷且广泛使用的官能团,但目前的合成仍然存在局限性。在此,报道了一种针对砜[( E )-烯丙基砜和α-磺酰甲基苯乙烯]的区域分散的无过渡金属方法。该方法使用市售烯烃、碱、添加剂、溶剂和亚磺酸钠(RSO 2 Na)并以良好的产率生产加合物。考虑到发生多达 4 个反应(溴化、脱芳香重排、E2 和 S N 2),这种方法非常有效。关键加合物的结构通过X射线晶体学证实。