Abstract
Sulfenyl dipyrroles feature two pyrroles linked via a sulfenyl bridge. The synthesis of sulfenyl dipyrroles has typically involved SCl2 as the sulfur source. However, SCl2 is no longer readily available within North America and Europe. Herein we report a new synthesis of sulfenyl dipyrroles using SOCl2 as the sulfur source and reductant. Although five new sulfenyl dipyrroles were synthesized and isolated via this route, functional group tolerance proved limited. A potential mechanism for the reaction, involving reduction of a sulfinyl moiety by SOCl2, is briefly explored.
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