2,6-二甲基-2H-苯并[b][1,4]噁嗪-3(4h)-酮

ethyl 2-methyl-3-phenylbut-3-enoate

ethyl 2-acetamidoprop-2-enoate

3-甲基氧杂萘邻酮

ethyl 2,3-dimethylbut-2-enoate