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Spiro[3H‐pyrazole‐3,3′‐oxindoles] Derived from 1,2,3,4‐Tetrahydroquinoline |
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| Abstract: | Aldol condensation of 5,6‐dihydro‐4H‐pyrrolo3,2,1‐ij ]quinoline‐1,2‐dione with aryl methyl ketones generates 3‐(aroylmethylidene)oxindoles, which react with hydrazine to generate tricyclic spiro3H‐pyrazole‐3,3′‐oxindoles]. |
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