31042-20-3
7-benzyloxychroman-4-one
+
95-92-1
乙二酸二乙酯
→
~78%
121884-60-4
ethyl ester of 7-benzyloxy-4-oxochromanglyoxylic acid
26200-05-5
3-phenyl-7-phenylmethoxy-2,3-dihydrochromen-4-one