Abstract
AbstractThe phosphazene-catalyzed regioselective condensation of allyl thioethers with aldehydes is investigated. Upon treatment of allyl thioethers with P4-t-Bu, allyl thioether anions are generated and rapidly react with aromatic aldehydes, leading to 1,3-dienyl sulfides in good yields with high regioselectivity. This finding provides an alternative approach for the preparation of allyl thioether anions in a regioselective manner. In addition, chemoselective transformations of 1,3-dienyl sulfides to provide the corresponding 1,3-dienyl sulfoxides or 1,3-dienyl sulfones are also demonstrated.
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