Sonochemical reformatsky reactions of α-bromoesters with sym-(keto)dibenzo-16-crown-5
Reactions of sym‐(keto)dibenzo‐16‐crown‐5 with ethyl α‐bromoesters, zinc dust and iodine in dioxane and/or tetrahydrofuran under irradiation by high intensity ultrasound (HIU) provide β‐hydroxy lariat ether esters in 79‐91% yields. HIU‐promoted Reformatsky reactions offer several advantages over cus...
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| Veröffentlicht in: | Journal of heterocyclic chemistry 2001-11, Vol.38 (6), p.1255-1258 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Reactions of sym‐(keto)dibenzo‐16‐crown‐5 with ethyl α‐bromoesters, zinc dust and iodine in dioxane and/or tetrahydrofuran under irradiation by high intensity ultrasound (HIU) provide β‐hydroxy lariat ether esters in 79‐91% yields. HIU‐promoted Reformatsky reactions offer several advantages over customary thermal reaction conditions. |
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| ISSN: | 0022-152X 1943-5193 |
| DOI: | 10.1002/jhet.5570380603 |