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Synthèse stéréosélective des sulfones vinyliques Z et E.

✍ Scribed by Marc Julia; Michèle Launay; Jean-Pierre Stacino; Jean-Noël Verpeaux


Publisher
Elsevier Science
Year
1982
Tongue
French
Weight
194 KB
Volume
23
Category
Article
ISSN
0040-4039

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Synthèses Stéréosélectives des Acides 13
✍ Alain Valla; Zo Andriamialisoa; Virginie Prat; Alain Laurent; Michel Giraud; Rog 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 146 KB

The methylene-de-oxo-bisubstitution reaction between dimethyl isopropylidene malonate and the C-15 b-methylenealdehyde 1 which could serve as substitute for E b-ionylideneacetaldehyde 2, produces stereoselectively the E,E olefin. Hence, new stereoselective syntheses of 13 E and 13 Z retinoic acids w