2-Chloroethanol → HCID 18621487, compound

Temperature

110 °C

To a solution of 4-benzylpiperidine (0.50 mL, 2.8 mmol) in DMF (15 mL) were added 2-chloroethanol (0.25 mL, 3.70 mmol) and K2CO3 (0.79 g, 5.70 mmol). The heterogeneous mixture was heated at 110° C. for 2 h. It was then cooled to 25° C. and was diluted with water (100 mL) and extracted with ether (2×70 mL). The collected organic phase was washed with water (2×100 mL), dried and concentrated in vacuo. The crude compound was purified by filtration on silica gel using CH2Cl2/MeOH as eluant to afford the title compound as a colorless solid (0.25 g, 40%): mp 62-64° C.; 1H NMR (CDCl3) δ 1.15-1.35 (m, 2H), 1.45-1.60 (m, 1H), 1.63 (bd, J=13.8 Hz, 2H), 1.99 (t, J=11.7 Hz, 2H), 2.48 (t, J=5.7 Hz, 2H), 2.53 (d, J=6.9 Hz, 2H), 2.87 (bd, J=11.7 Hz, 2H), 2.9 (bs, 1H), 3.574 (t, J=5.4 Hz, 2H), 7.14 (d, J=7.2 Hz, 2H), 7.20 (d, J=6.9 Hz, 1H), 7.28 (t, J=6.2 Hz, 2H); MS (m/z) 219, 188, 91. Anal. Calcd for C1-4H21NO: C, 76.71; H, 9.65; N, 6.40. Found: C, 74.49; H, 9.29; N, 6.08.

1. temperatureIt was then cooled to 25° C.
2. extractionextracted with ether (2×70 mL)
3. washThe collected organic phase was washed with water (2×100 mL)
4. customdried
5. concentrationconcentrated in vacuo
6. filtrationThe crude compound was purified by filtration on silica gel

ORD record

ord-04d70bc9a9a54878b01cf3abebb96aae

Source dataset

uspto-grants-2001_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06218404B1