6052-75-1
4-hydroxy-1,6-dimethylpyridin-2-one
+
609-08-5
甲基丙二酸二乙酯
→
~87%
380634-00-4
4-Hydroxy-3,6,7-trimethyl-2H-pyrano[3,2-c]pyridine-2,5(6H)-dione