Abstract
Ethyl 4,5-dioxo-2-phenyl-4,5-dihydro-1H-pynole-3-carboxylates reacted with indan-1,3-dione and 3-amino-1-phenylbut-2-en-1-one or 3-aminobut-2-enenitrile to give 3-benzoyl-2-methyl-2′,5-dioxo-5′-prienyl-1,1′,2′,5-tetrahydrospiro[indeno[1,2-b]pyridine-4,3′-pyrroles] and 2-methyl-2′,5-dioxo-5′-phenyl-1,1′,2′,5-tetrahydrospiro[indeno[1,2-b]pyridine-4,3′-pyrrole]-3-carbonitriles, respectively.
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