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Reactions of formylchromone derivatives. Part 5. Transformations of 3-formylchromones into pyrroles and pyridines

✍ Scribed by Clarke, Paul D.; Fitton, Alan O.; Kosmirak, Mario; Suschitzky, Hans; Suschitzky, John L.


Book ID
120002834
Publisher
Royal Society of Chemistry
Year
1985
Weight
1005 KB
Category
Article
ISSN
1472-7781

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## Abstract Reaction of 3‐formylchromone (**1**) with 5‐amino‐1__H__‐pyrazoles (**2**) in ethanol, afforded 6‐(2‐hydroxy‐benzoyl)pyrazolo[1,5‐__a__]pyrimidines (**3a‐g**) in good yields. The structures and the regiospecificity of the reaction were established by nmr measurements and X‐ray analysis,