Organic Letters
Experimental procedures, spectral data, and spectra of all
Letter
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AUTHOR INFORMATION
Corresponding Authors
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Notes
The authors declare no competing financial interest.
ACKNOWLEDGMENTS
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We acknowledge financial support from the National Science
Foundation of China (21272133, 21202077), Beijing Natural
Science Foundation (2132037), and Liaoning Excellent Talents
in University (LJQ2015060).
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from the Cambridge Crystallographic Data Centre via www.ccdc.cam.
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