反应详情

9.9 g (31 mmol) of 1-(2,3-dihydrobenzo[b]1,4-dioxin-6-yl)-2-oxo-1,2-dihydroquinoxaline-3-carboxylic acid was dissolved in dichloromethane (100 mL), and to this solution, N,N-dimethylformamide (0.5 mL) and 4.7 g (37 mmol) of oxalyl chloride were added sequentially. The mixture was stirred for one hour at room temperature. After confirming the completion of the reaction, the solvent was distilled off under reduced pressure to obtain 1-(2,3-dihydrobenzo[b]1,4-dioxin-6-yl)-2-oxo-1,2-dihydroquinoxaline-3-carbonyl chloride as yellow crystals (Compound No. of Production Intermediate: IX-75).

1. customthe completion of the reaction
2. distillationthe solvent was distilled off under reduced pressure