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SYNTHESIS OF HETEROCYCLES FROM 4-(2-HYDROXYBENZOYL)-1-PHENYLPYRAZOLE
4-(2-Hydroxybenzoyl)-1-phenylpyrazole (1) has been used in the synthesis of benzofuran (2), coumarin (5) and benzisoxazole (9).
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Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics