Acetic Anhydride → HCID 19827798, compound

Participants

Reaction Steps

A solution of 0.4 g (1.9 mmol) 6-chloro-1-hydroxyquinoxaline-2,3(1H,4H)-dione in 15 ml 0.5N sodium hydroxide was added with stirring 1 ml acetic anhydride. Stirring was continued at 25° C. for 1 h to give a precipitate. Recrystallization (dimethylformamide-water) gave 0.2 g (42%) 1-acetoxy-6-chloroquinoxaline-2,3(1H,4H)-dione. M.p. 219° C. 1H-NMR (DMSO-d6): 12.5 (1H, broad s), 7.2 (3H, m), 2.50 (3H, s). MS (m/e). 254 (M+, 30%).

Provenance & Evidence