Journal
ACS CATALYSIS
Volume 8, Issue 5, Pages 4049-4054Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.8b00536
Keywords
boronate esters; cobalt; C-X activation; N-heterocyclic carbenes; Suzuki-Miyaura
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Funding
- SERB [EMR/2016/000367]
- Indian Institute of Science (IISc) start-up research grant
- IISc Bangalore
- Kishore Vaigyanik Protsahan Yojana (KVPY)
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An efficient catalytic system based on a Co(II)-NHC precursor has been developed for the cross coupling of bis(pinacolato)diboron with aryl halides including aryl chlorides, affording the aryl boronates in good to excellent yields. A wide range of functional groups are tolerated under mild reaction conditions. The reaction shows excellent chemoselectivity for bromide over chloride. Preliminary mechanistic investigations show that the catalytic cycle may rely on a cobalt(I)-(III) redox couple.
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