反应详情

(2RS,3RS)-2-(2,4-difluorophenyl)-3-mercapto-1-[1H-1,2,4-triazol-1-yl]-2-butanol (0.3 g) was added to dichloromethane (5 ml), to which triethylamine (0.16 ml) was added under ice-cooling, and then, N,N-diethylthiocarbamoyl chloride (0.18 g) was added. The resultant solution was stirred for 1 hour at room temperature. Thereafter, water (20 ml) was added to the reaction mixture. The resultant mixture was then extracted with dichloromethane (40 ml). The extract was washed with water (20 ml), dried (MgSO4) and distilled off to remove the solvent under reduced pressure. The residue was purified by a silica gel column chromatography (2.9×30cm, eluent: ethyl acetate-dichloromethane=1:3). The objective fractions were concentrated. Hexane was added to the residue to give the compound (1), i.e., [(2RS,3RS)-3-(2,4-difluorophenyl)-3-hydroxy-4-(1H-1,2,4-triazol-1-yl)-2butyl] N,N-diethyldithiocarbamate (0.13 g) as colorless needles.

1. additionwas added under ice-
2. temperaturecooling
3. extractionThe resultant mixture was then extracted with dichloromethane (40 ml)
4. washThe extract was washed with water (20 ml)
5. dry with materialdried (MgSO4)
6. distillationdistilled off
7. customto remove the solvent under reduced pressure
8. customThe residue was purified by a silica gel column chromatography (2.9×30cm, eluent: ethyl acetate-dichloromethane=1:3)
9. concentrationThe objective fractions were concentrated
10. additionHexane was added to the residue