Ammonium Chloride → HCID 21877792, compound

Participants

Reaction Steps

Ammonium chloride (1.18 g, 22.1 mmol) is added to a mixture of 1-(2,6-difluoro-4-nitrophenyl)-2,5-dihydro-1H-pyrrole (Step 1, 0.5 g, 2.21 mmol) dissolved in EtOH/water (2:1, 18.0 mL) and heated to reflux. Iron powder (0.37 g, 6.63 mmol) is added in portions over one hour. After refluxing for another 45 min, the reaction mixture is cooled, filtered, and extracted three times with dichloromethane. The organic layers are washed with saline, dried (MgSO4) and concentrated to provide the title compound (0.43 g, >95%), MS (m/z): [M+H]+=197; 1H NMR (300 MHz, CDCl3): δ 3.63 (bs, 2H), 4.10 (s, 4H), 5.84 (s, 2H), 6.17 (d, 2H).

Provenance & Evidence