Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 52, Pages 17653-17657Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201405077
Keywords
alkylation; C-H activation; indolines; iridium; rhodium
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Funding
- National Natural Science Foundation of China [21302200]
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A Rh-III-catalyzed procedure for the C7-selective C-H alkylation of various indolines with alpha-diazo compounds at room temperature is reported. The advantages of this process are: 1) simple, mild, and pH-neutral reaction conditions, 2) broad substrate scope, 3) complete regioselectivity, 4) no need for an external oxidant, and 5) N-2 as the sole by-product. Furthermore, alkylation and bis-alkylation of carbazoles at the C1 and C8 positions have also been developed. More significantly, for the first time, a successful Ir-III-catalyzed intermolecular insertion of arene C-H bonds into a-diazo compounds is reported.
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