pyrones造句

例句与造句

1. Acid-Catalyzed Synthesis of Carbonyl Ylides from Hydroxy-3-Pyrones.
2. Intramolecular Hydrogen Transfer-Mediated Synthesis of Carbonyl Ylides from 5-Hydroxy-4-Pyrones.
3. The Gogte Synthesis ( 1938 ) is a method for the alkylation of certain pyrones with acid chlorides.
4. 5-hydroxy-4-pyrones can also be used to synthesize carbonyl ylides via an intramolecular hydrogen transfer.
5. Carbonyl ylides can be synthesized by acid catalysis of hydroxy-3-pyrones in the absence of a metal catalyst.
6. It's difficult to find pyrones in a sentence. 用pyrones造句挺难的