ethyl cis-3-bromoacrylate

4-羟基-2-苯基嘧啶

7,7-dimethyl-6,8-dihydro-1H-quinoline-2,5-dione

3-氧代丙酸乙酯

4,5,6,7-四氢吡唑并[1,5-a]吡啶-2-羧酸乙酯