Journal
ACS CATALYSIS
Volume 8, Issue 9, Pages 8115-8120Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.8b02118
Keywords
C-H bond functionalization; cobalt; photocatalysis; room temperature; amide; annulation
Categories
Funding
- SERB [EMR2016/000136]
- DST-DAAD [DST/INT/FRG/DAAD/P-06/201]
- IITK
- CSIR
- PK Kelkar Young Faculty Award
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A non-noble metal-free protocol has been developed for C-H bond functionalization at room temperature by merging cobalt-mediated catalysis with photo-catalysis. The reaction requires only oxygen as sole oxidant and operated at room temperature under redox-neutral conditions. Visible-light activated photoredox catalyst functions as an electron transfer reagent with oxygen as a terminal oxidant in the cobalt-mediated C-H and N-H bond annulation. The developed methodology allows annulations with various coupling partners. The concept demonstrated herein is expected to enhance the scope of cobalt catalysis as applied to sustainable fine chemical synthesis.
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