3,3,3-Trifluoropropyl-trimethoxysilane → 3,3,3-Trifluoropropyl(cyclopentyl)dimethoxysilane

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Reaction Steps

Under nitrogen, a 500 ml Schlenk flask was cooled to room temperature, charged with 150 ml of diethyl ether and cyclopentylmagnesium chloride (0.055 mol, 27.7 ml) and warmed slightly to 30° C. A 100 ml Schlenk flask was purged with nitrogen and charged with 75 ml hexane and 3,3,3-trifluoropropyltrimethoxy silane (10 ml, 0.0504 mol). The silane/hexane solution was added dropwise via cannula to the Grignard/diethyl ether mixture producing a white cloudy mixture. After addition (1.25 hrs.), the Grignard containing flask was rinsed once with 25 ml of hexane. The reaction mixture was stirred at room temperature for one hour.

Provenance & Evidence