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Claisen condensation of the dianion of β-keto esters

✍ Scribed by Stuart N. Huckin; Larry Weiler

Book ID
108384542
Publisher
Elsevier Science
Year
1972
Tongue
French
Weight
179 KB
Volume
13
Category
Article
ISSN
0040-4039

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CZaisen rearrwngement of B-hydroxy atlytic ester dianions povides stereocontrotted access to three contiguous chira2 centers on an acyctic frwnework; ax wuzmbiguous method has been devetoped for assessing dtistereosetectivity.

Aldol reactions of the dianion of β-keto
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✍ S.N. Huckin; Larry Weiler 📂 Article 📅 1971 🏛 Elsevier Science 🌐 French ⚖ 169 KB

Recently we developed an efficient proceedure to alkylate B-keto esters at the Y carbon. 1 This involved treating the starting 8-keto ester with one equivalent of sodium hydride, then with one equivalent of n-butyllithium to give the dianion &, and finally alkylation at the more nucleophilic termin