Benzaldehyde → 2-(Benzylamino)-1-phenylethanol

To a solution of 2-amino-1-phenyl-ethanol (12.0 g, 87.48 mmol) in methanol (60 mL) was added benzaldehyde (9.3 g, 8.9 mL, 87.48 mmol) and the reaction mixture was stirred for 1 hour at room temperature. The reaction mixture was then cooled to 0° C. and sodium borohydride (3.3 g, 87.48 mmol) was added. The reaction mixture was gradually allowed to warm to room temperature and stirred overnight. The reaction mixture was concentrated in vacuo, diluted with water, and filtered. The residue was rinsed with cold isopropanol (3×), then dried in vacuo to give 2-(benzylamino)-1-phenylethanol as white crystals (14.0 g, 70%). ESI-MS m/z calc. 227.1. found 228.2 (M+1)+; Retention time: 0.8 minutes (3 min run). 1H NMR (400 MHz, MeOD) δ 7.37-7.27 (m, 8H), 7.27-7.19 (m, 2H), 4.78 (dd, J=8.5, 4.5 Hz, 1H), 3.77 (q, J=13.0 Hz, 2H), 2.82-2.68 (m, 2H).

1. temperatureThe reaction mixture was then cooled to 0° C.
2. temperatureto warm to room temperature
3. stirringstirred overnight
4. concentrationThe reaction mixture was concentrated in vacuo
5. additiondiluted with water
6. filtrationfiltered
7. washThe residue was rinsed with cold isopropanol (3×)
8. customdried in vacuo

ORDレコード

ord-e6c8f447cb58439da3299bf4e6d75de5

出典データセット

uspto-grants-2015_11

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US09181273B2