Wang Y, Yang M, Lao C, Wang H, Jiang Z. Oxidative Cross-Coupling of α-Amino Ketones with Alcohols Enabled by I
2-Catalyzed C-H Hydroxylation.
J Org Chem 2023;
88:14470-14486. [PMID:
37807762 PMCID:
PMC10594655 DOI:
10.1021/acs.joc.3c01469]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Indexed: 10/10/2023]
Abstract
An I2-catalyzed oxidative cross-coupling of α-amino ketones with a wide range of alcohols is described. Using a combination of air and dimethyl sulfoxide (DMSO) as oxidants, the protocol allows an efficient synthesis of α-carbonyl N,O-acetals with high functional group tolerance and enables the late-stage introduction of α-amino ketones into biorelevant alcohols. Moreover, the present method can be used in the coupling of α-amino ketones with other kinds of nucleophiles, which demonstrates great generality for the functionalization of α-amino ketones. A preliminary mechanistic investigation suggests that C-H hydroxylation of α-amino ketones has been recognized as the key step followed by subsequent dehydration coupling.
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