Abstract
Pyrrolizidines were synthesized from 1,3-dipolar cycloaddition of N-substituted isatins, proline, and olefins. The highly diastereoselective and regioselective one-pot three-component cyclocondensation products were obtained in the presence of ionic liquids such as 1-buthyl-3-methlylimidazolium bromide. Keywords: Pyrrolizidines, ionic liquid, isatine, diastereoselective, 1,3-dipolar cycloaddition
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