Methyl 4-chloroanthranilate → (2-Amino-4-chlorophenyl)methanol

Methyl 2-amino-4-chlorobenzoate (1.5 g, 8.08 mmol) in THF (15 mL) was dropwise added to the suspension of LAH (429 mg, 11.3 mmol) in THF (10 mL) under N2 at 0° C. over 10 min. The resulting mixture was stirred at room temperature for 2 hrs, then the reaction was quenched at 0° C. with saturated Na2SO4 (50 mL), extracted with Et2O (2×70 mL). The combined organic solutions were washed with brine (30 mL), dried on MgSO4, and concentrated on rotary vacuum to afford the expected product as a white solid (874 mg, 69% yield); 1H NMR (400 MHz, MeOD) δ ppm 4.50 (s, 2 H), 6.58 (dd, J=8.06, 2.01 Hz, 1 H), 6.70 (d, J=2.01 Hz, 1 H), 7.01 (d, J=8.06 Hz, 1 H); Mass spec. 157.06 (MH+), Calc. for C7H8ClNO 157.03.

1. customthe reaction was quenched at 0° C. with saturated Na2SO4 (50 mL)
2. extractionextracted with Et2O (2×70 mL)
3. washThe combined organic solutions were washed with brine (30 mL)
4. customdried on MgSO4
5. concentrationconcentrated on rotary vacuum

ORD 기록

ord-876bd003aef0424086e31cdc90d9528e

출처 데이터셋

uspto-grants-2008_06

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07384931B2