## 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.
✦ LIBER ✦
Fasciola hepaticaL.: etude de la productivité d'un sporocyste en fonction de la taille deLymnaea truncatulaMüller
✍ Scribed by D. Rondelaud; D. Barthe
- Publisher
- Springer-Verlag
- Year
- 1987
- Tongue
- English
- Weight
- 610 KB
- Volume
- 74
- Category
- Article
- ISSN
- 1432-1955
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## 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