Organic Letters
Letter
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Figure 1. (a, b) PL spectra of compounds 5b and 7r, respectively,
dissolved in heptane (blue), Et2O (purple), CHCl3 (red), and THF
(orange). The excitation wavelengths were 360 and 390 nm,
respectively. The insets show photographs of the solutions under UV
illumination. (c, d) Time-correlated single-photon counting (TCSPC)
traces of 5b and 7r in CHCl3, measured at the peaks of the PL spectra
(open symbols). The solid lines are monoexponential fits.
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́
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ASSOCIATED CONTENT
* Supporting Information
■
Tetrahedron Lett. 1998, 39, 6163. (b) Hossain, K. M.; Takagi, K. Chem.
Lett. 1999, 28, 1241. (c) Zhou, J.; Fu, G. C. J. Am. Chem. Soc. 2003, 125,
12527. (d) Nakamura, M.; Ito, S.; Matsuo, K.; Nakamura, E. Synlett
2005, 1794. (e) Organ, M. G.; Avola, S.; Dubovyk, I.; Hadei, N.;
Kantchev, E. A. B.; O’Brien, C. J.; Valente, C. Chem. - Eur. J. 2006, 12,
4749. (f) Takahashi, H.; Inagaki, S.; Yoshii, N.; Gao, F.; Nishihara, Y.;
Takagi, K. J. Org. Chem. 2009, 74, 2794. (g) Bedford, R. B.; Huwe, M.;
Wilkinson, M. C. Chem. Commun. 2009, 600. (h) Ejiri, S.; Odo, S.;
Takahashi, H.; Nishimura, Y.; Gotoh, K.; Nishihara, Y.; Takagi, K. Org.
Lett. 2010, 12, 1692. (i) Smith, A. L.; Hardcastle, K. I.; Soper, J. D. J. Am.
Chem. Soc. 2010, 132, 14358. (j) Kealey, S.; Passchier, J.; Huiban, M.
Chem. Commun. 2013, 49, 11326. (k) Haas, D.; Hammann, J.; Greiner,
R.; Knochel, P. ACS Catal. 2016, 6, 1540.
S
The Supporting Information is available free of charge on the
Experimental details, GC data, melting points, and IR, 1H
and 13C NMR, and mass spectra (PDF)
AUTHOR INFORMATION
■
Corresponding Author
ORCID
(9) (a) Kaes, C.; Katz, A.; Hosseini, M. W. Chem. Rev. 2000, 100, 3553.
Notes
(b) Bedel, S.; Ulrich, G.; Picard, C.; Tisnes
(c) Comprehensive Coordination Chemistry II, Vol. 1; McCleverty, J. A.,
̀
, P. Synthesis 2002, 1564.
Meyer, T. J., Eds.; Elsevier: Oxford, U.K., 2004. (d) Dufert, M. A.;
̈
Billingsley, K. L.; Buchwald, S. L. J. Am. Chem. Soc. 2013, 135, 12877.
(10) Huang, Q.; Hunter, J. A.; Larock, R. C. Org. Lett. 2001, 3, 2973.
(11) (a) Metzger, A.; Schade, M. A.; Knochel, P. Org. Lett. 2008, 10,
1107. (b) Bedford, R. B.; Huwe, M.; Wilkinson, M. C. Chem. Commun.
The authors declare no competing financial interest.
ACKNOWLEDGMENTS
We thank the DFG for financial support and Albemarle
(Frankfurt) and BASF (Ludwigshafen) for gifts of chemicals.
■
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2009, 600. (c) Begouin, J.-M.; Claudel, S.; Gosmini, C. Synlett 2009,
3192. (d) Cai, Y.; Benischke, A. D.; Knochel, P.; Gosmini, C. Chem. -
Eur. J. 2017, 23, 250.
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