Abstract
A nearly forgotten reaction discovered more than 60 years ago—the cycloaddition of a cyclic alkyne and an organic azide, leading to an aromatic triazole—enjoys a remarkable popularity. Originally discovered out of pure chemical curiosity, and dusted off early this century as an efficient and clean bioconjugation tool, the usefulness of cyclooctyne–azide cycloaddition is now adopted in a wide range of fields of chemical science and beyond. Its ease of operation, broad solvent compatibility, 100 % atom efficiency, and the high stability of the resulting triazole product, just to name a few aspects, have catapulted this so-called strain-promoted azide–alkyne cycloaddition (SPAAC) right into the top-shelf of the toolbox of chemical biologists, material scientists, biotechnologists, medicinal chemists, and more. In this chapter, a brief historic overview of cycloalkynes is provided first, along with the main synthetic strategies to prepare cycloalkynes and their chemical reactivities. Core aspects of the strain-promoted reaction of cycloalkynes with azides are covered, as well as tools to achieve further reaction acceleration by means of modulation of cycloalkyne structure, nature of azide, and choice of solvent.
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This article is part of the Topical Collection “Cycloadditions in Bioorthogonal Chemistry”; edited by Milan Vrabel, Thomas Carell
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© 2016 Springer International Publishing Switzerland
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Dommerholt, J., Rutjes, F.P.J.T., van Delft, F.L. (2016). Strain-Promoted 1,3-Dipolar Cycloaddition of Cycloalkynes and Organic Azides. In: Vrabel, M., Carell, T. (eds) Cycloadditions in Bioorthogonal Chemistry. Topics in Current Chemistry Collections. Springer, Cham. https://doi.org/10.1007/978-3-319-29686-9_4
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DOI: https://doi.org/10.1007/978-3-319-29686-9_4
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Publisher Name: Springer, Cham
Print ISBN: 978-3-319-29684-5
Online ISBN: 978-3-319-29686-9
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