Organic Letters
Letter
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Cambridge Crystallographic Data Centre, 12 Union Road,
Cambridge CB2 1EZ, UK; fax: +44 1223 336033.
AUTHOR INFORMATION
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Corresponding Author
ORCID
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Notes
The authors declare no competing financial interest.
ACKNOWLEDGMENTS
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(17) While subjecting 1a and 2a in the presence of 20 mol % of
1
G.S. thanks IIT Madras (No. CHY/17-18/847/RFIR/GSEK).
D.A. thanks CSIR, New Delhi for senior-SPM fellowship. We
also thank DST and Department of Chemistry, IIT Madras for
instrumentation facilities.
TfOH, 5a was detected in 17% yield (by H NMR).
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