Water → 3-Chloro-5-fluoro-4-(quinolin-3-yloxy)phenylamine

To a solution of 3-chloro-5-fluoro-4-(quinolin-3-yloxy)nitrobenzene (50.1) (0.980 g) and NH4Cl (1.64 g) in EtOH (50 mL) —H2O (5 mL), was added iron powder (1.92 g). The mixture was heated to reflux for 1 h. After cooling the reaction mixture was filtered through short celite pad. The filtrate was concentrated, diluted with sat. NaHCO3 and extracted with AcOEt (30 mL×3). The combined organic layers were washed with brine and dried over Na2SO4. Concentration of solvent afford crude product, which was purified by column chromatography (silica gel, AcOEt:hexane=1:3) to provide aniline 50.2 (0.420 g) as a colorless solid.

1. temperatureThe mixture was heated
2. temperatureto reflux for 1 h
3. temperatureAfter cooling the reaction mixture
4. filtrationwas filtered through short celite pad
5. concentrationThe filtrate was concentrated
6. additiondiluted with sat. NaHCO3
7. extractionextracted with AcOEt (30 mL×3)
8. washThe combined organic layers were washed with brine
9. dry with materialdried over Na2SO4
10. customConcentration of solvent afford crude product, which
11. customwas purified by column chromatography (silica gel, AcOEt:hexane=1:3)

ORD 기록

ord-45e2d4a1ee24490fa15f4e8e5ac9701c

출처 데이터셋

uspto-grants-2011_06

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07960408B2