Journal
ACS CATALYSIS
Volume 6, Issue 5, Pages 2792-2796Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.6b00612
Keywords
sp(3) C-H bond activation; cobalt; alkenylation; quinoline; trisubstituted olefins
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Funding
- DAE-BRNS [BRNS/CHM/2014110]
- CSIR
- IITK
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Efficient, atom-economical, highly regioselective C(sp(3))-H bond alkenylation of 8-methylquinoline catalyzed by (Cp*)Co(III) is reported. A well-defined, air stable, molecular cobalt catalyst, Cp*Co(III), is employed for the first time in C(sp(3))-H bond activation. The developed methodology is broadly applicable and tolerates a variety of functional groups, under mild conditions. Experimental and density functional theory (DFT) results suggest that the initial cyclometalation was occurred via an external-base-assisted concerted metalation deprotonation pathway.
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