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Experimental study demonstrates mercury-free transchalcogenation of 1,3-dithiol-2-thiones using silver(I) salts in toluene, suggesting a safer pathway for synthesizing organic electronic materials.
Transchalcogenation involves switching one group 16 atom for another. An important example is the conversion of 1,3-dithiol-2-thiones into 1,3-dithiol-2-ones. These are critical intermediates for organic conducting and supramolecular materials. The state-of-the-art in this reaction employs mercury(II) acetate in a chlorinated solvent, both of which present significant risks to health and the environment. Here we demonstrate that mercury(II) acetate can be supplanted by silver(I) salts, and that the reaction is conveniently carried out in toluene.
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Carolan et al. (2026) studied this question.
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