Nouvelle méthode de création de la liaison silicium-carbone à partir de chlorosilanes VII. C-silylation d'esters

The trimethylchlorosilane/magnesium/hexamethylphosphoric triamide system reacts with methyl benzoate to lead to an O- and C-silylated mixed ketal, which under hydrolysis easily gives benzoyltrimethylsilane (new preparative method of this compound), but which in basic media is converted to an unexpected siloxanic isomer. Under the same conditions trimethylsilyl benzoate gives, after hydrolysis, an α-C-disilylated alcohol. L'action du système...