Abstract
Nucleophilic species of selenium were generated in situ from the reaction of diorganyl diselenide with NaBH4 in PEG-400 as solvent and selectively added to several α,β-unsaturated ketones, esters, acid, and nitrile. By this simple procedure, chalcogenolate anions were directly added at mild conditions, furnishing the respective Michael adducts in good yields.
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