3-chloro-1,5-dimethyl-cyclohexa-1,3-diene

3,5-丁二酮-2,4,6-三甲基-1,4-羟基吡啶

diethyl 2,4-dimethyl-4-hydroxy-6-oxocyclohexane-1,3-dicarboxylate

乙醚

乙醇