Piperazine → HCID 58707258, compound

Participants

Reaction Steps

A solution of N-(5-fluoro-2-(methylsulfonyl)phenyl)chroman-4-amine (0.3 g, 0.93 mmol), piperazine (0.80 g, 9.33 mmol) and N,N-diisopropylethylamine (2.2 mL, 12.74 mmol) in acetonitrile (15 mL) was stirred at reflux for 16 h. The reaction mixture was cooled down and concentrated under reduced pressure. The residue was taken up in dichloromethane, washed with water, dried and concentrated in vacuo to yield 0.23 g of the crude aniline. The crude product was purified by PTLC (20% ethyl acetate in hexanes) to yield 144 mg (40%) of N-(2-(methylsulfonyl)-5-(piperazin-1-yl)phenyl)chroman-4-amine: 1H NMR (400 MHz, CD3Cl): δ 7.63 (d, 1H), 7.31 (d, 1H), 7.28 (m, 1H), 6.91 (m, 1H), 6.85 (d, 1H), 6.47 (d, 1H), 6.42 (d, 1H), 6.21 (s, 1H), 4.80 (br s, 2H), 4.65 (m, 1H), 4.23 (m, 2H), 3.04 (m, 4H), 2.88 (s, 3H), 2.21 (m, 2H), 2.20 (br d, 1H). MS (ESI) m/z: Calculated: 387.16; Observed: 388.2 (M++1).

Provenance & Evidence