Lach F, Koza P. Practical way to imidazo[4,5-b] and [4,5-c]pyridine-2-ones via cascade ureidation/palladium-catalyzed cyclization.
ACS COMBINATORIAL SCIENCE 2012;
14:491-5. [PMID:
22873837 DOI:
10.1021/co300078f]
[Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We developed an efficient one-pot tandem carbamoyl chloride amination and palladium-catalyzed intramolecular urea cyclization, which furnished high-throughput access to imidazo[4,5-b]pyridine-2-one and related imidazo[4,5-c]pyridine-2-one ring systems. Moderate to excellent yields were reported.
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