2-(Trifluoromethyl)-4H-pyran-4-ones: Convenient, available and versatile building-blocks for regioselective syntheses of trifluoromethylated organic compounds

- 2-(Trifluoromethyl)-4H-pyran-4-ones have versatile properties.
- 2-CF3-4-pyrones were used as advanced building-blocks.
- Trifluoromethylated heterocycles were synthesized on the basis of 2-CF3-4-pyrones.
- 2-CF3-4-pyrones were used in solvent-sensitive reactions.
- 2-CF3-4-pyrones can be attributed to excellent starting or intermediate substrates.