Four-Component Ring-Opening Reaction of Pyrroles via C-N Bond Cleavage under Multiple Functions of Elemental Sulfur

摘要

We report a four-component ring-opening reaction of pyrroles via C-N bond cleavage. In this process, elemental sulfur is used as the sulfur source of thiazole and thioamide and the reductant of olefin. A series of benzothiazoles functionalized with thiopropionamides at the C2 position were synthesized using this method. A plausible reaction mechanism is proposed based on the concise control experiments.

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