General Characteristics The condensation of 1,4-dicarbonyl compounds with sulfur sources gives thiophenes. Phosphorus pentasulfide (P4S10) and the Lawesson’s reagent are typically used as the sulfur ...
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Woollins’ Reagent
General Characteristics 2,4-Diphenyl-1,3-diselenadiphosphetane-2,4-diselenide is called the Woollins’ reagent. In a similar way that the Lawesson’s reagent is used to convert carbonyl groups to the ...