Hydrochloric Acid → HCID 67102183, compound

To a solution of (S)-1-cyclopropyl-2-methoxyethylcarbamate (4.36 g, 17.5 mmol) in EtOH (80 mL) and CHCl3 (3 mL) in a Parr bottle was added 4 N HCl in dioxane (5 mL) and Pd/C (476 mg, 10%, wet, Degussa type). The mixture was placed on a Parr shaker under H2 atm at 45 psi for 16 h. The reaction mixture was filtered through a pad of Celite and the filtrate was concentrated then reconcentrated from hexanes (2×) to afford (S)-1-cyclopropyl-2-methoxyethanamine hydrochloride (2.65 g, 100% yield) as a white solid: mp 190-192° C.; [α]25D +14.3 (c 0.446, MeOH); 1H NMR (400 MHz, CDCl3) δ 8.41 (s br, 3H), 3.68 (d, J=5.6 Hz, 2H), 3.39 (s, 3H), 2.64-2.60 (m, 1H), 1.20-1.13 (m, 1H), 0.71-0.58 (m, 3H), 0.32-0.28 (m, 1H); 13C NMR (100 MHz, CDCl3) δ 72.1, 59.2, 57.5, 10.7, 4.2, 4.1; LRMS (ESI) m/e 231.2 [(2M+H)+, calcd for C12H27N2O2 231.2].

1. customfor 16 h
2. filtrationThe reaction mixture was filtered through a pad of Celite
3. concentrationthe filtrate was concentrated

ORD record

ord-88514d1170f34bf989f7dd0c763c0ea2

Source dataset

uspto-grants-2013_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08372847B2