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  • Facile oxidation of electron-poor benzo[b]thiophenes to the corresponding sulfones with an aqueous solution of H2O2 and P2O5.

Facile oxidation of electron-poor benzo[b]thiophenes to the corresponding sulfones with an aqueous solution of H2O2 and P2O5.

Chemical communications (Cambridge, England) (2010-03-18)
Dyeison Antonow, Teresa Marrafa, Irfaan Dawood, Tauheed Ahmed, Mohammad R Haque, David E Thurston, Giovanna Zinzalla
ABSTRACT

A facile oxidation for the clean conversion of benzo[b]thiophenes to their corresponding sulfones is described employing an aqueous solution of H(2)O(2) and P(2)O(5); the solution can be prepared and stored on a multi-gram scale with a shelf-life of up to two weeks.

MATERIALS
Product Number
Brand
Product Description

Supelco
Phosphorus pentoxide, ≥99.99% trace metals basis
Sigma-Aldrich
Phosphorus pentoxide, puriss. p.a., ACS reagent, ≥98.0% (T)
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Phosphorus pentoxide, desiccant, with moisture indicator
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Phosphorus pentoxide, powder, ACS reagent, ≥98.0%
Sigma-Aldrich
Phosphorus pentoxide, ReagentPlus®, 99%
Sigma-Aldrich
Phosphorus pentoxide, anhydrous, free-flowing, Redi-Dri, ReagentPlus®, 99%