β-(Trifluoromethyl) enones, easily obtained in few steps from commercially available methyl hemiketal of trifluoroacetaldehyde, react with electron-rich O- and N-containing heterocycles (furans and benzofurans, pyrroles and indoles, hydroxycoumarins), through a 1,4 addition, to give heterocycles bearing a functionalized side-chain. β-(chlorodifluoromethyl)enones and β-(pentafluoroethyl)enones behave in the same way
β-(三
氟甲基)烯酮可通过几步容易地从三
氟乙醛的商用甲基
半缩醛中几步获得,然后通过1,4加成与富电子的含O和N的杂环(
呋喃和
苯并呋喃,
吡咯和
吲哚,羟基
香豆素)反应。 ,得到带有官能化侧链的杂环。β-(
氯二
氟甲基)烯酮和β-(五
氟乙基)烯酮的行为相同。