The DOI matches its Crossref record.
The Mannich Reaction of Malonates with Simple Imines Catalyzed by Bifunctional Cinchona Alkaloids: Enantioselective Synthesis of β-Amino Acids
Open accessAbstract
We describe the first efficient, direct asymmetric Mannich reactions with malonates and N-Boc aryl and alkyl imines by cooperative hydrogen-bonding catalysis with a cinchona alkaloid bearing a thiourea functionality. We have also extended the scope of this reaction to beta-ketoesters. The synthetic value of this new reaction is demonstrated in the establishment of a convergent enantioselective route toward the biologically important beta-amino acids under mild and air- and moisture-tolerant conditions.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Kobayashi, S., Mori, Y., Fossey, J. S., & Salter, M. M. (2011) · Chemical Reviews · doi:10.1021/cr100204f · Cited by 988
Cupreines and Cupreidines: An Emerging Class of Bifunctional Cinchona Organocatalysts
Marcelli, T., van Maarseveen, J. H., & Hiemstra, H. (2006) · Angewandte Chemie International Edition · doi:10.1002/anie.200602318 · Cited by 353
Bui, T., Syed, S., & Barbas, C. F. (2009) · Journal of the American Chemical Society · doi:10.1021/ja903520c · Cited by 351
Zhu, J.-B., & Chen, E. Y.-X. (2015) · Journal of the American Chemical Society · doi:10.1021/jacs.5b08658 · Cited by 173
Metadata
- Authors
- Song, J., Wang, Y., & Deng, L.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-04-18
- Volume
- 128
- Issue
- 18
- Pages
- 6048-6049
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2124218271
- Cited by
- 322
- References
- 0
- FWCI
- 24.73
- Type
- journal article
- Language
- en
- Open access
- green
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: The Mannich Reaction of Malonates with Simple Imines Catalyzed by Bifunctional Cinchona Alkaloids: Enantioselective Synthesis of β-Amino Acids. https://app.cochat.ai/papers/10.1021/ja060716f
- The paper
- Song, J., Wang, Y., & Deng, L. (2006). The Mannich Reaction of Malonates with Simple Imines Catalyzed by Bifunctional Cinchona Alkaloids: Enantioselective Synthesis of β-Amino Acids. Journal of the American Chemical Society. https://doi.org/10.1021/ja060716f
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.