Chlorotrimethylsilane → [Methoxy(tetrahydro-4H-pyran-4-ylidene)methoxy](trimethyl)silane

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a stirred solution of diisopropylamine (1.6 g, 0.016 mol) in tetrahydrofuran (4 mL) was added dropwise n-butyllithium (1.59 M in hexane, 9.2 mL, 0.014 mol) at 0° C. under nitrogen, and stirred for 20 min. Then, the reaction mixture was cooled to −40° C., methyl tetrahydro-2H-pyran-4-carboxylate (1.9 g, 0.013 mol) and trimethylsilyl chloride (2.0 mL, 0.015 mol) in tetrahydrofuran (1 mL) was added, and the resulting mixture was gradually warmed to room temperature over 3 h. The volatile components were removed by evaporation and the residue was filtered through a pad of celite washing with hexane. The filtrate was dried in vacuo to give 2.9 g (quant.) of the title compound as a clear yellow oil.

Herkunft & Nachweise