Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 141, Issue 4, Pages 1435-1440Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b11465
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Funding
- CEA [ANR-17-CE07-0035-01]
- ANR [ANR-17-CE07-0035-01]
- U.S. National Science Foundation [CHE-1361104]
- Fonds de recherche du Quebec Nature et Technologies
- NIH Minority Biomedical Research Support [1 SC3 GM089589-08]
- Henry Dreyfus Teacher -Scholar Award
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The first approach to pyrazole-containing helicenes via sydnone-aryne [3 + 2]-cycloaddition is described. An unprecedented regioselectivity in the cycloaddition step toward the more sterically constrained product was observed in the presence of extended aromatic scaffolds. DFT calculations enabled under-standing the origin of this unexpected selectivity.
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