Hydrochloric Acid → 2-Hydroxyimino-N-indan-5-yl-acetamide

Temperatur

45 °C

To a solution of chloral hydrate (5.56 g, 33.63 mmol) and anhydrous sodium sulfate (28.58 g, 201.20 mmol) in water (90 mL) add a mixture of hydroxylamine sulfate (25.63 g, 156.16 mmol), 5-aminoindane (4 g, 30.03 mmol), concentrated hydrochloric acid (3.14 mL) in water (30 mL). Heat the mixture at 45° C. for 1 h and at 75° C. for 2 hr. Cool the mixture to room temperature and filter the solid. Wash the solid with water and ethyl ether. Dry the solid under vacuum to yield the title compound (4.98 g, 81%). 1H NMR (DMSO-d6, 300 MHz) δ 1.90 (quintuplet, J=7.8 Hz, 2H), 2.72 (q, J=7.8 Hz, 4H), 7.06 (d, J=8.2 Hz, 1H), 7.28 (dd, J=1.5, 8.2 Hz, 1H), 7.49 (bs, 1H), 9.94 (s, 1H), 12.02 (s, 1H). MS (ES−): 203 (M−H).

1. temperatureCool the mixture to room temperature
2. filtrationfilter the solid
3. washWash the solid with water and ethyl ether
4. customDry the solid under vacuum

ORD-Eintrag

ord-fc9a7b84854d4c3a840555f158a5135e

Quelldatensatz

uspto-grants-2010_07

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07749992B2