反应详情

温度

0 °C

2-Amino-N,N-dimethyl-benzenesulfonamide (10.00 g, 49.94 mmol) in N,N-dimethylformamide (200 mL) was treated with sodium hydride 60% dispersion in mineral oil (3.99 g) at 0° C., then 2,4,5-trichloropyrimidine (8.587 mL, 74.90 mmol) was added and the reaction was stirred for 5 minutes at 0° C., then for 3 hours at room temperature. The reaction was quenched with aqueous saturated ammonium chloride, then water. The precipitate was collected by filtration and recrystallized from methanol to give 2-(2,5-dichloro-pyrimidin-4-ylamino)-N,N-dimethyl-benzenesulfonamide as a light grey solid (9.3 g, 52%). LC/MS (ESI+): 346.93 (M+H).

1. waitfor 3 hours at room temperature
2. customThe reaction was quenched with aqueous saturated ammonium chloride
3. filtrationThe precipitate was collected by filtration
4. customrecrystallized from methanol