Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 14, Issue 38, Pages 8989-8997Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ob01307d
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- UGC, New Delhi
- CSIR-New Delhi [BSC0108]
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A complementary set of Ni- and Cu-based catalyst systems for the selective N-arylation of 2-aminobenzimidazoles have been developed. Selective N-arylation of the primary amine (C-NH2) group was achieved by Ni-catalyzed, boronic acid promoted cross-coupling reactions in air, whereas, selective N-arylation of the azole nitrogen was achieved with Cu-catalysis and aryl halides. These protocols are general and give rapid access to an array of both the N-arylated isomers of 2-aminobenzimidazoles.
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