反应详情

A solution of 1-(5-amino-2-methoxyphenyl)-3-pyrazin-2-yl-urea (Compound 14, Example 4) (260 mg, 1 mmol) in dry pyridine (15 mL) was treated with methanesulfonyl chloride (0.08 mL, 1 mmol) and stirred 16 h at room temperature. The reaction mixture was concentrated in vacuo and the solid residue was triturated with ethanol, collected by filtration, and dried in vacuo to afford the product (205 mg, 61%). 1H NMR (300 Mhz, d6-DMSO) δ: 10.16 (s, 1H), 10.07 (s, 1H), 9.40 (s, 1H), 8.92 (s, 1H), 8.35 (s, 1H), 8.27 (s, 1H), 8.19 (d, J=2.2 Hz, 1H), 7.04 (d, J=8.8 Hz, 1H), 6.91 (dd, J=8.7, 2.4 Hz, 1H), 3.91 (s, 3H), 2.91 (s, 3H).

1. concentrationThe reaction mixture was concentrated in vacuo
2. customthe solid residue was triturated with ethanol
3. filtrationcollected by filtration
4. customdried in vacuo