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A library of novel 1-methyl-4-arylpyrrolo-(spiro[2.2′]indan-1′,3′-dione)-spiro[3.3″]-1″-methyl/benzyl-5″-(arylmethylidene)piperidin-4″-ones and 1-methyl-4-arylpyrrolo-(spiro[2.11′]-11H-indeno[1,2-b]quinoxaline)-spiro[3.3″]-1″-methyl/benzyl-5″-(arylmethylidene)piperidin-4″-ones have been synthesized via 1,3-dipolar azomethine ylide cycloaddition in the ionic liquid, 1-butyl-3-methylimidazolium bromide...
A series of novel spiro[acenaphthylene-1,2′-pyrrolidine] (4), spiro[acenaphthylene-1,2′-pyrrolizidine] (7), and spiro[indoline-3,2′-pyrrolidine] derivatives (9) containing cyano group were successfully synthesized via a three-component 1,3-dipolar cycloaddition reaction of acenaphthenequinone or isatin, sarcosine or proline, and Knoevenagel adducts in refluxing aqueous methanol. In this intermolecular...
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