Abstract
The Mannich-type reaction for 1 -methoxycarbonyl- or 1 -benzyloxy-carbonyl-2-methoxylpyrrolidine with carbon nucleophiles such as acetylacetone, methyl acetoacetate, dimethyl malonates, benzoylacetone, dibenzoylmethane, or cyclohexane-1, 3-dione proceeded by acid catalysis under solvent-free conditions with more efficiency than that in dichloromethane.
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