Acetoxyacetyl chloride → HCID 59353085, compound

Participants

Reaction Steps

To a suspension of 4-amino-N-(3-chloroquinoxalin-2-yl)benzenesulfonamide (2 g; 4.49 mmol; 1 eq) in DCM (100 mL) is added acetoxyacetyl chloride (1.23 mL; 9 mmol; 2 eq) and N-ethyldiisopropylamine (2.3 mL; 13.5 mmol; 3 eq) and the reaction mixture is stirred at room temperature for 30 min. DCM is removed under reduced pressure and the crude residue is dissolved in EtOAc. The organic phase is washed twice with 10% citric acid then brine. The solvent is evaporated and the residue is taken up in iPrOH then refluxed and left at room temperature until precipitation. The precipitate is filtered off then dried under reduced pressure to afford 1.9 g (95%) of the title compound as a yellow powder. 1H NMR (DMSO-d6) δ 10.70 (s, 1H), 8.25 (m, 2H), 8.09 (m, 4H), 7.88 (m, 2H), 4.71 (s, 2H), 2.13 (s, 3H). HPLC (max plot) 98%; Rt 4.03 min. UPLC/MS (ES+) 435.2.

Provenance & Evidence