反应详情

A solution of (4S,6S)-4-(2-fluoro-3-methyl-5-nitrophenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine (1.26 g, 3.57 mmol) in EtOH (15 mL) was purged with N2 followed by the addition of acetic acid, glacial (0.412 ml, 7.13 mmol) and palladium, 10% wt. on activated carbon (0.047 ml, 5.35 mmol). The resulting mixture was purged with N2 again and H2 was bubbled through a balloon for 1 h. The mixture was filtered through celite, concentrated, diluted washed with 10% Na2CO3, 1 N NaOH, extracted with DCM and chromatographed on silica gel using 0-5% MeOH/DCM to afford a white solid as (4S,6S)-4-(5-amino-2-fluoro-3-methylphenyl)-4-(fluoromethyl)-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine (1.11 g, 3.43 mmol, 96% yield). MS m/z=323.9 [M+H]+. Calculated for C13H14F5N3O: 323.11.

1. customThe resulting mixture was purged with N2 again
2. customH2 was bubbled through a balloon for 1 h
3. filtrationThe mixture was filtered through celite
4. concentrationconcentrated
5. additiondiluted
6. washwashed with 10% Na2CO3, 1 N NaOH
7. extractionextracted with DCM
8. customchromatographed on silica gel using 0-5% MeOH/DCM