Organic Letters
Letter
(13) (a) Bergman, J.; Stensland, B. J. Heterocycl. Chem. 2014, 51, 1−10
(isatines). (b) Andre Jacobsen, S.; Rodbotten, S.; Benneche, T. J. Chem.
Soc., Perkin Trans. 1 1999, 3265−3268 (pyrimidones).
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8888−8892. (b) Ghosh, R.; Olofsson, B. Org. Lett. 2014, 16, 1830−
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ChemistryOpen 2014, 3, 54−57. (d) Lindstedt, E.; Ghosh, R.;
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Petersen, T. B.; Olofsson, B. Chem.Eur. J. 2012, 18, 14140−14149.
(15) See the Supporting Information for details.
(16) Salts 2 were synthesized according to: (a) Bielawski, M.; Zhu, M.;
Olofsson, B. Adv. Synth. Catal. 2007, 349, 2610−2618. (b) Bielawski,
M.; Aili, D.; Olofsson, B. J. Org. Chem. 2008, 73, 4602−4607. (c) Zhu,
M.; Jalalian, N.; Olofsson, B. Synlett 2008, 592−596.
AUTHOR INFORMATION
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Corresponding Authors
Author Contributions
§These authors contributed equally.
Notes
The authors declare no competing financial interest.
(17) (a) Kalyani, D.; Deprez, N. R.; Desai, L. V.; Sanford, M. S. J. Am.
Chem. Soc. 2005, 127, 7330−7331. (b) Phipps, R. J.; Grimster, N. P.;
Gaunt, M. J. J. Am. Chem. Soc. 2008, 130, 8172−8174.
ACKNOWLEDGMENTS
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(18) Malmgren, J.; Santoro, S.; Jalalian, N.; Himo, F.; Olofsson, B.
Chem.Eur. J. 2013, 19, 10334−10342.
The Swedish Research Council (621-2011-3608) and K. A.
Wallenberg Foundation are gratefully acknowledged for financial
support. Dr. Joel Malmgren is acknowledged for initial project
discussions.
(19) (a) Phipps, R. J.; Gaunt, M. J. Science 2009, 323, 1593−1597.
(b) Duong, H. A.; Gilligan, R. E.; Cooke, M. L.; Phipps, R. J.; Gaunt, M.
J. Angew. Chem., Int. Ed. 2011, 50, 463−466 (see especially ref 14).
(20) Guo, J.; Dong, S.; Zhang, Y.; Kuang, Y.; Liu, X.; Lin, L.; Feng, X.
Angew. Chem., Int. Ed. 2013, 52, 10245−10249.
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