A copper catalyzed three-component reaction was developed for the synthesis of benzothiazolones. In the presence of CuBr2, the reaction of o-iodoanilines and K2S with DMF proceeded smoothly and generated the corresponding benzothiazolones with good isolated yields. DMF functioned both as the carbon monoxide source and as the reaction medium in this reaction.
Cobalt‐Catalyzed Hydrolysis/C−H Thiolation Cascade Reaction of
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‐Aryl Thiocarbamoyl Fluorides with Water: Access to 3‐Alkyl‐2(3H)‐Benzothiazolones
作者:Miao Yu、Long Zhen、Liqin Jiang
DOI:10.1002/adsc.202200426
日期:2022.10.18
A cobalt-catalyzed cascadereaction of N-aryl thiocarbamoylfluorides and water has been developed, providing access to 3-alkyl-2(3H)-benzothiazolones in 48–83% yields. This protocol for 3-alkyl-2(3H)-benzothiazolones precludes bad-smell and toxic reagents. Mechanistic studies suggest that the transformation proceeds through hydrolysis followed by dehydrogenative coupling to form C−S bond involving