Air Induced Phosphoryl Radical Mediated Stereoselective Hydrosulfonylation of Alkynes <i>via</i> Halogen Atom Transfer: Ingress of <i>Z</i>-Vinyl Sulfones
作者:Shashikant Tiwari、Manisha Kumari、Diwan S. Rawat
DOI:10.1021/acs.orglett.4c00539
日期:2024.3.22
phosphoryl radical is well-known to participate in addition reactions with alkenes/alkynes. Here, we report a novel reaction mode of the phosphoryl radical where it participates in halogen atom transfer (XAT) with electron deficient vinyl halides instead of a facile addition reaction. Nevertheless, in comparison with aryl and alkyl halides, the exploitation of vinyl halides into a carbon radical via XAT
众所周知,磷酰基参与与烯烃/炔烃的加成反应。在这里,我们报告了磷酰基自由基的一种新反应模式,其中它参与与缺电子乙烯基卤化物的卤素原子转移(XAT),而不是简单的加成反应。然而,与芳基卤化物和烷基卤化物相比,通过XAT 将卤乙烯转化为碳自由基的情况相当罕见。该方案提供了在环境友好的条件下直接氢磺酰化许多内部和末端炔烃以获得各种Z-乙烯基砜的机会。在露天产生磷酰基、以水为溶剂、优异的官能团相容性和优异的化学选择性是本方法的吸引人的特征。