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39.13.10.1.1.2.2 Method 2: Oxidation of a Thiol Using Bis(1H-benzimidazol-1-yl) Sulfide

DOI: 10.1055/sos-SD-039-01100

Sato, R.; Kimura, T.Science of Synthesis, (200839889.

Bis(1H-benzimidazol-1-yl) sulfide is a good sulfurization reagent for α,ω-dithiols; however, treatment of meso-dithiol 12 with this reagent gives cis-dimethyl 1,2-dithiane-3,6-dicarboxylate (13) instead of cis-dimethyl 1,2,3-trithiepane-4,7-dicarboxylate. The product results from a simple oxidation of the starting dithiol (Scheme 7).[‌19‌]

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