1,2,4,6-tetramethyl-1,4-dihydro-pyridine-3,5-dicarboxylic acid diethyl ester

1,1'-(1,2,4,6-tetramethyl-1,4-dihydro-pyridine-3,5-diyl)-bis-ethanone

乙醛

2,3-二甲基-2-环戊烯酮

甲基碘