Abstract

AbstractWe report a method for coupling of acetophenone oxime acetates, C−H bonds α to ketones, and elemental sulfur. The reactions proceeded in the presence of Li2CO3 (base) and DMSO (solvent) to afford 2‐benzoyl benzothienothiazoles. Functionalities including halogen, protected alcohol, and heterocycle groups were compatible with reaction conditions. Use of methylene C−H bonds in β‐keto esters is also viable. This marks a rare example for mild synthesis of S‐heterocycles from ketoxime acetates.

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