Nickel(II)-Catalyzed Synthesis of Sulfinates from Aryl and Heteroaryl Boronic Acids and the Sulfur Dioxide Surrogate DABSO
作者:Pui Kin Tony Lo、Yiding Chen、Michael C. Willis
DOI:10.1021/acscatal.9b04363
日期:2019.12.6
We report a redox-neutral Ni(II)-catalyzed sulfination of readily available aryl and heteroaryl boronic acids. Using the combination of commercially available, air-stable NiBr2·(glyme), a commercially available phenanthroline ligand, and DABSO, boronic acids are efficiently converted to the corresponding sulfinate salts, which can be further elaborated to valuable sulfonyl-containing groups, including
我们报告易于获得的芳基和杂芳基硼酸的氧化还原中性Ni(II)催化的硫化。使用市售的,空气稳定的NiBr 2 ·(甘醇二甲醚),市售的菲咯啉配体和DABSO的组合,硼酸可以有效地转化为相应的亚磺酸盐,可以进一步精加工成有价值的含磺酰基基团,包括砜,磺酰胺,磺酰氟和磺酸酯。催化剂的加入量可以以克为单位降低至2.5摩尔%。这种实际上简单的方案可耐受前所未有的药学上相关的和电子贫(杂)芳基硼酸,可直接合成活性药物成分。