91-16-7
邻苯二甲醚
→
~51%
68160-93-0
methyl 6-oxopyran-2-carboxylate
67-56-1
甲醇
+
75611-67-5
6-oxopyran-2-carbonyl chloride
874531-13-2
5-oxo-hex-2-enedioic acid diethyl ester
672-67-3
2H-吡喃-2-酮-6-羧酸