Triethylamine → HCID 19980941, compound

Participants

Reaction Steps

107.6 g (0.05 mol) of 1,2-bis(chlorodimethylsilyl)ethane are introduced into 200 ml of dichloromethane. A solution of 71.6 g (0.50 mol) of 2,4-difluorobenzylamine and 101.2 g (1.0 mol) of triethylamine in 300 ml of dichloromethane are added dropwise at room temperature over the course of 2.5 hours, to give a white suspension. The end of the reaction is checked by gas chromatography. 400 ml of 10% sodium dihydrogen phosphate solution are then added in order to dissolve the precipitated triethylammonium chloride. The organic phase is separated off, dried using magnesium sulfate, filtered and evaporated on a vacuum rotary evaporator. The turbid oil is taken up in 300 ml of petroleum ether, clarified and re-evaporated. 124.7 g of a colourless liquid which is purified by fractional distillation at 125°-127° C. and 15 mbar are obtained. 85.3 g (60% or theory) of pure product are obtained.

Provenance & Evidence