Synthesis of 6-(2-hydroxybenzoyl)pyrazol
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Jairo Quiroga; Diana Mejía; Braulio Insuasty; Rodrigo Abonía; Manuel Nogueras; A
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Article
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2002
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Journal of Heterocyclic Chemistry
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English
⚖ 41 KB
## 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,