Journal of the American Chemical Society
Communication
acetonitrile, ∼103 faster than that for 4-aminoazobenzene in a
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isomerization rates.25
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11 can be quantitatively photoswitched in both directions; to
the best of our knowledge, this ability is superior to that of all
other azobenzenes reported to date.13,16 Furthermore, azopyr-
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The Z isomers of such five-membered azoheteroarenes can
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ASSOCIATED CONTENT
* Supporting Information
Text, tables, figures, and CIF files giving synthetic methods,
NMR and crystallographic data, photochemical methods
including additional spectra and kinetics, and computational
details. This material is available free of charge via the Internet
■
́
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AUTHOR INFORMATION
Corresponding Author
Notes
■
The authors declare no competing financial interest.
(33) Brown, E. V. J. Heterocycl. Chem. 1969, 6, 571.
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ACKNOWLEDGMENTS
■
We thank the Engineering and Physical Sciences Research
Council for support. R.D.R. thanks the Leverhulme Trust
(Grant No. RPG-2012-441) for funding. We also thank Dr.
Marina Kuimova for equipment access.
(37) Briquet, L.; Vercauteren, D. P.; Perpet
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