N-[(5-氯-2-噻吩)磺酰基]氨基甲酸乙酯 、
3-(4-aminophenyl)-6-fluoro-7-(methylamino)-2,3-dihydrobenzo[e][1,3]oxazin-4-one 在
crude residue 作用下,
以
1,4-二氧六环 为溶剂,
反应 2.0h,
以to give 86 mg (37%) of pure 1-(5-chlorothiophen-2-ylsulfonyl)-3-(4-(6-fluoro-7-(methylamino)-4-oxo-2H-benzo[e][1,3]oxazin-3(4H)-yl)phenyl)urea的产率得到1-(5-chlorothiophen-2-ylsulfonyl)-3-(4-(6-fluoro-7-(methylamino)-4-oxo-2H-benzo[e][1,3]oxazin-3(4H)-yl)phenyl)urea