Dibenzothiophenium

CAS 2244536-10-3, Cat. No EN300-33267752
Reagent for S-, N-, or C-alkynylnation

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This extremely useful reagent is designed for S-, N-, or C-alkynylnation in good yields. It is light-yellow crystalline powder, bench-stable for a long time, and well-soluble in DCM (and other similar solvents)¹. In the presence of bases such as carbonates, the reagent reacts with thiols, sulfonamides, and doubly activated methylene groups to afford the desired S-, N-, or C-alkynylated products². The reaction has good tolerance for many functional groups, as an electrophilic reagent it prefers to react with nucleophiles.

Synonyms: dibenzothiophenium; 5-[2-[tris(1-methylethyl)silyl]ethynyl]-, 1,1,1-trifluoromethanesulfonate (1:1); 5-(triisopropylalkynyl) dibenzo[b,d]thiophenium triflate