Hydrochloric Acid → HCID 85044508, compound

To a solution of 6-{[(E)-3-(2-furyl)-2-propenoyl]amino}hexanoate (0.200 g, 0.75 mmol) in methanol (2 ml) a solution of hydroxylamine hydrochloride (0.210 g, 3.02 mmol) in methanol (3 ml) and NaOH (242 mg, 6.04 mmol) in H2O (1 ml) were added. The mixture was stirred for 30 min at room temperature and acidified with 1N HCl to pH 3 of the reaction medium. The mixture was extracted with ethyl acetate (3×25 ml), the organic phase was washed with brine and dried (Na2SO4). The solvent was evaporated and the residue (0.172 g) was crystallized from acetonitrile (5 ml) to give the title compound (0.117 g, 58%). M.p. 151-152.5° C. 1H-NMR (DMSO-d6, HMDSO), δ: 1.15-1.62 (m, 6H); 1.94 (t, J=7.2 Hz, 2H); 3.14-3.22 (m, 2H); 6.40 (d, J=15.5 Hz, 1H); 6.57 (dd, J=1.6 and 3.2 Hz, 1H); 6.74 (d, J=3.2 Hz, 1H); 7.21 (d, J=15.5 Hz, 1H); 7.75 (s, 1H); 8.11 (t, J=5.6 Hz, 1H); 8.67 (d, J=1.6 Hz, 1H); 10.34 (s, 1H). HPLC analysis on Zorbax SB-C18 column: impurities 1% (column size 4.6×150 mm; mobile phase acetonitrile+0.1% H3PO4, gradient from 25 to 100%; detector UV 270 nm; sample concentration 1.0 mg/ml; flow rate 1.5 ml/min). Anal. Calcd for C13H18N2O4, %: C, 58.64; H, 6.81; N, 10.52. Found, %: C, 58.64; H, 6.

1. extractionThe mixture was extracted with ethyl acetate (3×25 ml)
2. washthe organic phase was washed with brine
3. dry with materialdried (Na2SO4)
4. customThe solvent was evaporated
5. customthe residue (0.172 g) was crystallized from acetonitrile (5 ml)

ORD record

ord-9ec78ab14b7a49859ffd80166ca617bf

Source dataset

uspto-grants-2011_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07880020B2