824-38-4
potassium 2-nitrophenolate
+
4755-77-5
草酰氯单乙酯
→
~85%
17318-84-2
1-O-ethyl 2-O-(2-nitrophenyl) oxalate
3597-63-5
3-羟基-2H-1,4-苯并噁嗪-2-酮
89898-78-2
4-hydroxy-1,4-benzoxazine-2,3-dione