Journal
ORGANIC LETTERS
Volume 18, Issue 15, Pages 3610-3613Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.6b01632
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Funding
- National Natural Science Foundation of China [21502173, 21272217]
- Outstanding Young Talent Research Fund of Zhengzhou University [1521316002]
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A new cobalt(II)-catalyzed decarboxylative C-H activation/annulation of benzamides and alkynyl carboxylic acids has been described. Alkynyl carboxylic acids were first employed as the coupling partners using inexpensive Co(OAc)(2)center dot 4H(2)O as the catalyst. This method enables a switchable cyclization to isoquinolones and isoindolinones with excellent selectivity. Moreover, a catalytic amount of Ag2O was adopted as co-catalyst and O-2 (from air) as a terminal oxidant for the preparation of isoquinolones.
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