74842-52-7
→
~75%
63181-77-1
4-(4-methylphenoxy)-2-benzofuran-1,3-dione
108-31-6
马来酸酐
+
60698-27-3
5-p-tolyloxy-furan-2-carboxylic acid
~66%
60698-28-4
2-(4-methylphenoxy)furan