71486-53-8
4-氧代哌啶-3-羰酸甲酯 盐酸盐
+
108-46-3
间苯二酚
→
~81%
193217-48-0
5H-[1]苯并吡喃并[3,4-c]吡啶-5-酮, 1,2,3,4-四氢-8-羟基-
67848-59-3
4-氧代-3-哌啶甲酸乙酯