Thionyl bromide → 2-Bromomethyl-5-(3-trifluoromethylphenyl)-furan

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Reaction Steps

The hydroxymethyl compound (4.84 g; 0.02 mole) prepared in (a) above, was dissolved in dimethylformamide (30 ml) cooled to 0°-5° C. and thionyl bromide (1.7 ml; 0.02 mole) was added dropwise with stirring. After 2 hours the greenish-yellow solution was poured onto ice/water and extracted via diethyl ether. The ether extract was washed with NaCl (saturated solution) dried over molecular sieve 3A and evaporated to give a light brown oil which slowly crystallised (4.6 g).

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