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Direct Michael addition to electron-deficient alkenes using diorganyl dichalcogenides (Te/S) and NaBH4/PEG-400 |
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| Authors: | Gelson Perin,Elton L. BorgesThiago J. Peglow,Eder J. Lenardã o |
| Affiliation: | LASOL, CCQFA, Universidade Federal de Pelotas—UFPel, PO Box 354, 96010-900 Pelotas, RS, Brazil |
| Abstract: | Nucleophilic species of tellurium and sulfur were generated in situ from the reaction of the respective diorganyl dichalcogenides with NaBH4 in PEG-400 as solvent and selectively added to electron-deficient alkenes. Chalcogenolate anions were directly added at mild conditions by this simple procedure and in all cases furnished the respective Michael adducts in short reaction times and good yields. |
| Keywords: | Organotellurium compounds PEG-400 Organosulfur compounds Michael adduct α,β-Unsaturated carbonyl compounds |
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