N-bromobutanimide → HCID 71143824, Verbindung

Temperatur

-10 °C

A mixture of 2,3-dihydro-1H-pyrrolizin-1-one (300 mg, 2.48 mmol) in THF (20 mL) was cooled to −10° C. in a brine bath. N-Bromosuccinimide (441 mg, 2.48 mmol) in THF (5 mL) was added dropwise, and the reaction mixture was stirred at −10° C. for 1 hour. The reaction was subsequently quenched with water (100 mL) and extracted with ethyl acetate (2×100 mL). The organic layers were combined and dried and to give the title compound, which was used without further purification (520 mg). 1H NMR (400 MHz, DMSO-d6) δ ppm 3.02-3.05 (m, 2H), 4.17-4.20 (m, 2H), 6.58 (d, J=4.40 Hz, 1H), 6.67 (d, J=3.90 Hz, 1H). ESI-MS m/z [M+H]+ calc'd for C7H6BrNO, 200. found, 200.

1. customThe reaction was subsequently quenched with water (100 mL)
2. extractionextracted with ethyl acetate (2×100 mL)
3. customdried

ORD-Eintrag

ord-ab0abc6fa410481c9b17703f985a9404

Quelldatensatz

uspto-grants-2015_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09056873B2