Palladium(II)-Catalyzed Synthesis of Sulfinates from Boronic Acids and DABSO: A Redox-Neutral, Phosphine-Free Transformation
作者:Alex S. Deeming、Claire J. Russell、Michael C. Willis
DOI:10.1002/anie.201508370
日期:2016.1.11
redox‐neutral palladium(II)‐catalyzed conversion of aryl, heteroaryl, and alkenyl boronic acids into sulfinate intermediates, and onwards to sulfones and sulfonamides, has been realized. A simple Pd(OAc)2 catalyst, in combination with the sulfur dioxide surrogate 1,4‐diazabicyclo[2.2.2]octane bis(sulfur dioxide) (DABSO), is sufficient to achieve rapid and high‐yielding conversion of the boronic acids into the
已经实现了氧化还原中性钯(II)催化的芳基,杂芳基和烯基硼酸到亚磺酸盐中间体的转化,然后再转化为砜和磺酰胺。简单的Pd(OAc)2催化剂与二氧化硫替代1,4-二氮杂双环[2.2.2]辛烷双(二氧化硫)(DABSO)结合使用,足以实现硼酸的快速高产转化率变成相应的亚磺酸盐。然后,基于C或N的亲电试剂的加入可以在一锅,两步过程中分别转化为砜和磺酰胺。