138643-62-6

Upstream product

• 19300-54-0 toluene-4-sulfonic acid pent-4-enyl ester 
• 28519-50-8 potassium thiotosylate 
• 64818-35-5 4-pentenyl mesylate 
• 1119-51-3 bromopentene 

Downstream Products

• 138643-63-7 2-(Toluene-4-sulfonylmethyl)-tetrahydro-thiophene 

Relevant academic research and scientific papers

Organophotoredox-Catalyzed Formation of Alkyl-Aryl and -Alkyl C-S/Se Bonds from Coupling of Redox-Active Esters with Thio/Selenosulfonates

A mild organophotoredox synthetic protocol for forming a Csp3-S/Se bond by reacting widespread redox-active esters with thio/selenosulfonates has been developed. The power of the synthetic manifold is fueled by an unprecedented broad substrate scope and wide functional group tolerance.

Intramolecular homolytic substitution at the sulfur atom: an alternative way to generate phosphorus- and sulfur-centered radicals

Two efficient procedures involving tin hydride or thiophenol-mediated intramolecular homolytic substitution at the sulfur atom are reported. They lead to the generation of varied P(V)-centered radicals from the corresponding aryl or alkyne thiophosphorus substrates. The radical formed can be trapped by an olefin via an intermolecular addition, leading to the construction of C-P bonds. Thiophosphination of triple bonds was also achieved using a radical cycloisomerization process. Extension of the methodology to sulfur-containing species was examined.

The Cyclosulfonation Reaction: A Comment on the Radical Reactions of 4-Pentenyl Tosylate

Attempted free radical rearrangement of the para-toluenesulfonyl ester of 4-penten-1-ol in carbon tetrachloride gives only the simple Kharash 1,2-adduct, instead of the 2-substituted tetrahydrofuran as claimed by Serra and da Silva Correa.

An Interesting Rearrangement of Unsaturated Sulphonate and Thiosulphonate Esters

Alkenyl tosylates and thiotosylates, in the presence of radical initiators, undergo radical rearrangements to the corresponding tetrahydrofuran and tetrahydrothiophen derivatives.