Bifunctional N-heterocyclic carbene ligands for Cu-catalyzed direct C–H carboxylation with CO2?
RSC Advances Pub Date: 2017-11-13 DOI: 10.1039/C7RA11414A
Abstract
Diethylene glycol-functionalized imidazo[1,5-a]pyridin-3-ylidenes (DEG-ImPy) have been developed as bifunctional N-heterocyclic carbene ligands. The DEG-ImPy Cu(I) complexes efficiently catalyzed the direct C–H carboxylation of benzoxazole with CO2, showing higher isolated yields than those with the N,N′-(2,6-diisopropylphenyl)imidazolylidene Cu catalyst.
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Journal Name：RSC Advances
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CAS no.: 89640-58-4
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