Imidazole → Diethyl 3-(tert-butyldiphenylsiloxy)glutarate

Beteiligte Stoffe

Reaktionsschritte

To a solution of 1.22 g (5.97 mmol) of diethyl 3-hydroxyglutarate in dry dimethylformamide (30 ml) were added 1.95 g (7.09 mmol) of tert-butyldiphenylsilyl chloride and 1.41 g (20.7 mmol) of imidazole in an atmosphere of argon, and the mixture was allowed to react at room temperature for 10 hours. To the solution was added water followed by extraction with benzene. The organic layer was washed with water and concentrated under reduced pressure. The residue thus obtained was subjected to silica gel column chromatography for separation and purification. From the eluate with dichloromethane-hexane (1:1) was afforded 2.54 g (5.75 mmol) of diethyl 3-(tert-butyldiphenylsiloxy)glutarate.

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