Abstract
A cheap and fast construction of both enantiomers of substituted succinimides is reported. α- or β-amino acids, such as β-phenylalanine and α-tert-butyl aspartate, were found to be efficient organocatalysts for the reaction between α,α-disubstituted aldehydes and maleimides. Products containing contiguous quaternary-tertiary stereogenic centers are obtained in high to quantitative yields and excellent selectivities utilizing low catalyst loadings (0.5-3.5%). Finally, a one-pot efficient asymmetric synthesis of lactones is described.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Aldehydes / chemistry*
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Amino Acids / chemical synthesis
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Amino Acids / chemistry
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Aspartic Acid / analogs & derivatives*
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Aspartic Acid / chemical synthesis
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Aspartic Acid / chemistry
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Catalysis
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Lactones / chemical synthesis*
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Lactones / chemistry
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Maleimides / chemistry*
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Molecular Structure
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Phenylalanine / chemical synthesis*
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Phenylalanine / chemistry
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Stereoisomerism
Substances
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Aldehydes
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Amino Acids
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Lactones
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Maleimides
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alpha-tert-butyl aspartate
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Aspartic Acid
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Phenylalanine