Syn-Dihydroxylation of Alkenes Using a Sterically Demanding Cyclic Diacyl Peroxide
作者:Afsaneh Pilevar、Abolfazl Hosseini、Jonathan Becker、Peter R. Schreiner
DOI:10.1021/acs.joc.9b01748
日期:2019.10.4
alkenes is a highly valuable reaction in organic synthesis. Cyclic acyl peroxides (CAPs) have emerged recently as promising candidates to replace the commonly employed toxic metals for this purpose. Here, we demonstrate that the structurally demanding cyclic peroxide spiro[bicyclo[2.2.1]heptane-2,4'-[1,2]dioxolane]-3',5'-dione (P4) can be effectively used for the syn-dihydroxylation of alkenes. Reagent
烯烃的顺二羟基化是有机合成中非常有价值的反应。环状酰基过氧化物(CAPs)最近作为有前途的候选物出现,以取代通常用于此目的的有毒金属。在这里,我们证明了结构上苛刻的环状过氧化物螺[双环[2.2.1]庚烷-2,4'-[1,2]二氧戊环] -3',5'-二酮(P4)可以有效地用于合成烯烃的-二羟基化。与其他CAP和二醇与烯丙醇产品相互竞争的CAP相比,试剂P4还显示出对带有β-氢的烯烃进行二羟基化的选择性提高。此外,对映纯P4(标记为P4')的使用证明了P4'对于烯烃的无金属不对称顺二羟基化反应的潜力。