Organic Letters
Letter
(11) (a) Shibuya, M.; Tomizawa, M.; Suzuki, I.; Iwabuchi, Y. J. Am.
Chem. Soc. 2006, 128, 8412−8413. (b) Shibuya, M.; Sasano, Y.;
Tomizawa, M.; Hamada, T.; Kozawa, M.; Nagahama, N.; Iwabuchi, Y.
Synthesis 2011, 3418−3425. (c) Iwabuchi, Y. Chem. Pharm. Bull. 2013,
61, 1197−1213.
AUTHOR INFORMATION
■
Corresponding Author
Notes
(12) Additional experiments are described in the Supporting
Information.
The authors declare no competing financial interest.
(13) The yields were calculated by 1H NMR analysis after a mixture of
36 (or 37) and the corresponding disulfide as a side product was
isolated.
ACKNOWLEDGMENTS
■
A part of this work was supported by a Grant for Basic Science
Research Projects from The Sumitomo Foundation (No.
130001).
(14) Hamada, S.; Furuta, T.; Wada, Y.; Kawabata, T. Angew. Chem., Int.
Ed. 2013, 52, 8093−8097.
(15) Bailey, W. F.; Bobbitt, J. M.; Wiberg, K. B. J. Org. Chem. 2007, 72,
4504−4509.
DEDICATION
■
This work is dedicated to Professor Takeo Kawabata, Kyoto
University, on the occasion of his 60th birthday.
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