反应详情

A solution of 12.2 g of 4-hydroxymethyl-piperidine-hydrochloride, 9.8 g of 4-fluorobenzonitrile and 28.3 ml of N-ethyl-diisopropylamine is heated to 140° C. for 4 hours. After cooling, it is chromatographed over silica gel using methylene chloride and methylene chloride/ethyl acetate (1:1) as eluant. After the solvent has been removed under reduced pressure the residue remaining is triturated with petroleum ether and suction filtered. Yield: 5.1 g (29% of theory), Melting point: 148°-150° C.

1. temperatureAfter cooling
2. customit is chromatographed over silica gel
3. customAfter the solvent has been removed under reduced pressure the residue
4. customremaining is triturated with petroleum ether and suction
5. filtrationfiltered