Journal
ORGANIC LETTERS
Volume 19, Issue 11, Pages 2781-2784Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.7b00982
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Funding
- National NSF of China [21432005]
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A rhodium-catalyzed regioselective C-H activation/cyclization of azoxy compounds with alkynes has been disclosed to construct a variety of 2H-indazoles. A [4 + 1]-cycloaddition rather than a normal [4 + 2] mode is observed in the process of cyclative capture along with an oxygen atom transfer, and a C C triple borid cleavage. This protocol features a broad substrate scope, a good functional group tolerance and an exclusive regioselectivity.
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