Nuclear oxidation in flavones and related compounds - Part XLVI. Synthesis in the primetin series
V K Ahluwalia D S Gupta V V S Murti T R Seshadri
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/seca/038/06/0480-0494
The two higher analogues of 5-hydroxy flavone (primuletin) containing two and three methoxyl groups in the side phenyl nucleus have been synthesised and subjected to persulphate oxidation. 5-Hydroxy-3′:4′-dimethoxy flavone gave poor yield of dimethoxy primetin while the higher member could not be oxidised under these conditions. Alternatively, oxidation of 8-hydroxy flavones has been attempted and found to proceed more satisfactorily to yield primetin and its higher members. The required 8-hydroxy flavones have been made from 2:3-dihydroxy acetophenone for the preparation of which a convenient method has been worked out starting from ortho vanillin.
V K Ahluwalia1 D S Gupta1 V V S Murti1 T R Seshadri1
© 2021-2022 Indian Academy of Sciences, Bengaluru.