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Etude de la réactivité de la fonction carbonyle avec le cétène en présence d'un alcoxyde de titane. 1ère communication. Nouvelle méthode de synthèse de β-hydroxyesters

✍ Scribed by Laurent Vuitel; André Jacot-Guillarmod

Publisher
John Wiley and Sons
Year
1974
Tongue
German
Weight
522 KB
Volume
57
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

A new synthesis of β‐hydroxyesters involving a reaction between a carbonyl compound, ketene and an alkyl‐orthotitanate is described.

The following carbonyl compounds have been studied: aldehydes, ketones, α‐diketones, α‐ or γ‐ketoesters. A reaction mechanism is proposed.

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Etude de la réactivité de la fonction ca
Etude de la réactivité de la fonction carbonyle avec le cétène en présence d'un alcoxyde de titane. 2e communication. A propos de l'interprétation de quelques spectres RMN de β-hydroxyesters formés
✍ Laurent Vuitel; Raffaele Tabacchi; André Jacot-Guillarmod 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 German ⚖ 315 KB 👁 1 views

## Abstract The NMR. spectra of a serie of β‐hydroxyesters have been studied. It has been found that the methylene protons are magnetically nonequivalent only when the substituents on the center of asymmetry of I or II are very different. The magnetically non‐equivalence of the isopropylmethylproto