» Articles » PMID: 37807762

Oxidative Cross-Coupling of α-Amino Ketones with Alcohols Enabled by I-Catalyzed C-H Hydroxylation

Overview
Journal J Org Chem
Specialty Chemistry
Date 2023 Oct 9
PMID 37807762
Authors
Affiliations
Soon will be listed here.
Abstract

An I-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 -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.

References
1.
Pinter A, Sud A, Sureshkumar D, Klussmann M . Autoxidative carbon-carbon bond formation from carbon-hydrogen bonds. Angew Chem Int Ed Engl. 2010; 49(29):5004-7. DOI: 10.1002/anie.201000711. View

2.
Chen C, Zhu M, Jiang L, Zeng Z, Yi N, Xiang J . Copper-catalyzed oxidative cross-coupling of α-aminocarbonyl compounds with primary amines toward 2-oxo-acetamidines. Org Biomol Chem. 2017; 15(38):8134-8139. DOI: 10.1039/c7ob02012k. View

3.
Maha A, Rukachaisirikul V, Saithong S, Phongpaichit S, Poonsuwan W, Sakayaroj J . Terezine derivatives from the fungus Phoma herbarum PSU-H256. Phytochemistry. 2015; 122:223-229. DOI: 10.1016/j.phytochem.2015.11.009. View

4.
DhineshKumar J, Lamani M, Alagiri K, Prabhu K . A versatile C-H functionalization of tetrahydroisoquinolines catalyzed by iodine at aerobic conditions. Org Lett. 2013; 15(5):1092-5. DOI: 10.1021/ol4001153. View

5.
Nguyen N, Nguyen Q, Biswas S, Patil D, Shin S . β-Oxidation of Ynamides into ,Acetals by CPBA: Application in Enantioselective Intermolecular Transacetalization. Org Lett. 2019; 21(22):9009-9013. DOI: 10.1021/acs.orglett.9b03411. View