Thioacetic acid
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Thioacetic acid is an organic compound with the molecular formula CH3COSH. It is the sulfur equivalent of acetic acid (AcSH) with a lower boiling point (88-91.5°C). It is used in organic chemistry for the introduction of thiol groups in molecules.
In one application the reagent is used with AIBN in a free radical mediated nucleophilic addition to an exocyclic alkene forming a thioester [1] :