- Dithiooxamide as an Effective Sulfur Surrogate for Odorless High-Yielding Carbon-Sulfur Bond Formation in Wet PEG200 as an Eco-Friendly, Safe, and Recoverable Solvent
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In this study, we have employed dithiooxamide, a solid, odorless, and commercially available compound, as a sulfur surrogate for the preparation of dialkyl sulfides from available alkyl halides in high yields. This sulfur transfer agent was also used for a copper-catalyzed high-yielding preparation of diaryl sulfides from their available aryl halides and for the preparation of thia-Michael adducts in high yields. All the reactions were performed under odorless conditions in wet PEG200 (PEG = polyethylene glycol), which is an eco-friendly, safe, and recoverable solvent. The protocols were easily applicable to large-scale operation.
- Firouzabadi, Habib,Iranpoor, Nasser,Gorginpour, Forough,Samadi, Arash
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supporting information
p. 2914 - 2920
(2015/05/04)
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- Highly Efficient Solvents and Reagents for Elemental Sulfur
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Elemental sulfur is easily activated in the hydrazine hydrate-alkali system with formation of polysulfide anions. The procedure is developed for yielding highly concentrated solutions of alkali metal polysulfides. The latter compounds are readily alkylated with alkyl halides to form dialkyl polysulfides. The alkylation using higher alkyl halides (C7-C9) yields dialkyl sulfides that are difficult to prepare by other methods.
- Deryagina,Kozlov,Vershal',Babkin
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p. 1240 - 1243
(2007/10/03)
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