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Carbonyl Derivatives of Thiophene. I. The Reformatsky Reaction with α-Bromoesters

✍ Scribed by Schuetz, Robert D.; Houff, Wm. H.

Book ID
126480988
Publisher
American Chemical Society
Year
1955
Tongue
English
Weight
374 KB
Volume
77
Category
Article
ISSN
0002-7863

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✍ Nathan A. Ross; Richard A. Bartsch 📂 Article 📅 2001 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 31 KB

## Abstract 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 advant