17583-14-1
甲基-2-氧代-7-四氢-4,5,6,7-苯并噻唑
+
109-94-4
甲酸乙酯
→
~66%
827598-56-1
2-methyl-7-oxo-5,6-dihydro-4H-1,3-benzothiazole-6-carbaldehyde