The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Click Chemistry beyond Metal‐Catalyzed Cycloaddition
Abstract
No copper needed: In recent years, a large number of metal‐free click reactions have been reported based on thiol‐ene radical additions, Diels–Alder reactions, and Michael additions. In this Minireview, special attention is given to the advantages and limitations of the different methods to evaluate whether they have the potential to surpass the overwhelming success of the copper(I)‐catalyzed azide‐alkyne cycloaddition.magnified image The overwhelming success of click chemistry encouraged researchers to develop alternative “spring‐loaded” chemical reactions for use in different fields of chemistry. Initially, the copper(I)‐catalyzed azide‐alkyne cycloaddition was the only click reaction. In recent years, metal‐free [3+2] cycloaddition reactions, Diels–Alder reactions, and thiol‐alkene radical addition reactions have come to the fore as click reactions because of their simple synthetic procedures and high yields. Furthermore, these metal‐free reactions have wide applicability and are physiologically compatible. These and other alternative click reactions expand the opportunities for synthesizing small organic compounds as well as tailor‐made macromolecules and bioconjugates. This Minireview discusses the success and applicability of new, in particular metal‐free, click reactions.
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
Cites
CuI‐Catalyzed Alkyne–Azide “Click” Cycloadditions from a Mechanistic and Synthetic Perspective
Bock, V. D., Hiemstra, H., & van Maarseveen, J. H. (2006) · European Journal of Organic Chemistry · doi:10.1002/ejoc.200500483 · Cited by 1,452
The convergence of synthetic organic and polymer chemistries
Hawker, C. J., & Wooley, K. L. (2005) · Science · doi:10.1126/science.1109778 · Cited by 1,298
Cited by
Thiol-click chemistry: a multifaceted toolbox for small molecule and polymer synthesis
Hoyle, C. E., Lowe, A. B., & Bowman, C. N. (2010) · Chemical Society Reviews · doi:10.1039/b901979k · Cited by 1,639
Thiol-ene “click” reactions and recent applications in polymer and materials synthesis
Lowe, A. B. (2010) · Polym. Chem. · doi:10.1039/b9py00216b · Cited by 1,563
Hydrogels in a historical perspective: From simple networks to smart materials
Buwalda, S. J., Boere, K. W. M., Dijkstra, P. J., Feijen, J., Vermonden, T., & Hennink, W. E. (2014) · Journal of Controlled Release · doi:10.1016/j.jconrel.2014.03.052 · Cited by 994
Marrying click chemistry with polymerization: expanding the scope of polymeric materials
Golas, P. L., & Matyjaszewski, K. (2010) · Chem. Soc. Rev. · doi:10.1039/b901978m · Cited by 863
Designing degradable hydrogels for orthogonal control of cell microenvironments
Kharkar, P. M., Kiick, K. L., & Kloxin, A. M. (2013) · Chem. Soc. Rev. · doi:10.1039/c3cs60040h · Cited by 717
Metadata
- Authors
- Becer, C. R., Hoogenboom, R., & Schubert, U. S.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2009-06-17
- Volume
- 48
- Issue
- 27
- Pages
- 4900-4908
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2113007722
- Cited by
- 866
- References
- 2
- FWCI
- 47.89
- Type
- journal article
- Language
- en
- Open access
- closed
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: Click Chemistry beyond Metal‐Catalyzed Cycloaddition. https://app.cochat.ai/papers/10.1002/anie.200900755
- The paper
- Becer, C. R., Hoogenboom, R., & Schubert, U. S. (2009). Click Chemistry beyond Metal‐Catalyzed Cycloaddition. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.200900755
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.