6579-27-7
2,6-二氯-N-羟基-氯代苯甲醛肟
+
104184-64-7
3-溴-5,6-二氢-2H-吡喃-2-酮
→
~48%
156496-85-4
3-(2,6-dichlorophenyl)-4,5-dihydropyrano[4,3-d][1,2]oxazol-7-one
3393-45-1
5,6-二氢-2H-吡喃-2-酮