Nitrogen → HCID 11358991, compound

Participants

Reaction Steps

To a solution of 4n-propylbenzenesulphonyl chloride (171 mg, 0.783 mmol) in dichloromethane (4 mL).was added pyridine (150 μL, 1.86 mmol) and the mixture was stirred under. N2 for 5 min, after which time 5-amino-1,2-benzisoxazole (100 mg, 0.746 mmol) was added. The resulting mixture was stirred for 2 h at room temperature, then saturated NaHCO3 solution (10 mL) was added and the mixture was extracted into ethyl acetate (20 mL). The organic phase was washed with brine, dried (Na2SO4), filtered and evaporated to give a residue that was purified using flash chromatography to afford a white solid (170 mg, 72%), single spot at Rf 0.68 (1:1 hexane:ethyl acetate). mp 130.0-130.6° C., HPLC purity 99+% (tR 2.44 min in 10% water-acetonitrile). 1H NMR (CDCl3): δ 8.62 (1H, d, J=1.0 Hz), 7.60 (2H, d, J=8.4 Hz), 7.48 (2H, m), 7.19 (3H, m), 6.86 (1H, s, N−H), 2.58 (2H, t, J=7.5 Hz), 1.58 (2H, sextet, J=7.4 Hz), 0.88 (3H, t, J=7.4 Hz). LCMS: 315.14 (M−). FAB-MS (MH+, C16H16N2O3S): calcd 317.0960, found 317.0962.

Provenance & Evidence