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  • Title: Trapping hydrogen sulfide (H₂S) with diselenides: the application in the design of fluorescent probes.
    Author: Peng B, Zhang C, Marutani E, Pacheco A, Chen W, Ichinose F, Xian M.
    Journal: Org Lett; 2015 Mar 20; 17(6):1541-4. PubMed ID: 25723840.
    Abstract:
    Here we report a unique reaction between phenyl diselenide-ester substrates and H2S to form 1,2-benzothiaselenol-3-one. This reaction proceeded rapidly under mild conditions. Thiols could also react with the diselenide substrates. However, the resulted S-Se intermediate retained high reactivity toward H2S and eventually led to the same cyclized product 1,2-benzothiaselenol-3-one. Based on this reaction two fluorescent probes were developed and showed high selectivity and sensitivity for H2S. The presence of thiols was found not to interfere with the detection process.
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