Cyclopentadiene → Methoxydimethylsilylcyclopentadiene

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

16.8 ml (0.22 moles) of a suspension of sodium in toluene at 30% are charged into a 250 ml flask. The mixture is diluted with 100 ml of THF and cooled to 0° C. 18.5 ml (0.22 moles) of cyclopentadiene diluted in 50 ml of THF are slowly added dropwise (about 60 minutes). The resulting solution is left under stirring at room temperature for a whole night, is then cooled to 0° C. and 29 ml (0.22 moles) of methoxydimethylchlorosilane fresh distillate (PETRARCH: 90%) are slowly added dropwise. The reaction is carried out at 0° C. for 3 hours. After filtration of the salt formed and evaporation of the solvent, a dark yellow oily liquid is obtained which, on distillation at 160°-162° C. gives 7.5 g of the desired product with a purity of 95.5% (GC), and a yield of 24%.

Herkunft & Nachweise