The oxygenation of 8-aminoquinoline amides by benzoyl peroxide at the C5 position in water is developed in the absence of a transition metal catalyst, affording the desired products in moderate to good yields of up to 88%. Mechanism studies reveal that the reaction would involve a radical process.
Palladium(II)-Catalyzed othro-C–H-Benzoxylation of 2-Arylpyridines by Oxidative Coupling with Aryl Acylperoxides
作者:Wing-Nga Sit、Chun-Wo Chan、Wing-Yiu Yu
DOI:10.3390/molecules18044403
日期:——
A palladium(II)-catalyzed ortho-benzoxylation of 2-arylpyridines with aryl acylperoxides was developed. With pyridyl as directing group, the benzoxylation reaction exhibits remarkable regioselectivity and excellent functional group tolerance, providing the products in up to 87% yield.
Palladium-Catalyzed Decarboxylative Arylation of C−H Bonds by Aryl Acylperoxides
作者:Wing-Yiu Yu、Wing Nga Sit、Zhongyuan Zhou、Albert S.-C. Chan
DOI:10.1021/ol900756g
日期:2009.8.6
bond was developed using aryl acylperoxides as inexpensive aryl sources. Substrates containing pyridyl, oxime, and oxazoline groups undergo effectively ortho-selective C−H arylation with excellent functional group tolerance. This arylation should begin by directing-group-assisted cyclopalladation, followed by the reaction of the palladacycle with aryl radicals generated in situ by thermal decomposition
Bu<sub>4</sub>NI-Catalyzed Oxygen-Centered Radical Addition between Acyl Peroxides and Isocyanides
作者:Meng Chen、Yang Li、Hong Tang、Hao Ding、Kai Wang、Lingen Yang、Cuiting Li、Meng Gao、Aiwen Lei
DOI:10.1021/acs.orglett.7b01272
日期:2017.6.16
A novel oxygen-centered radical addition between acyl peroxides and isocyanides has been developed. A diverse collection of valuable arylcarboxyamides were easily synthesized by this protocol. From the preliminary mechanistic study, the elimination of carbon dioxide affords the product via an intramolecular rearrangement.
A highly efficient Pd-catalyzed decarboxylative ortho-arylation of amides with aryl acylperoxides
作者:Dengke Li、Ning Xu、Yicheng Zhang、Lei Wang
DOI:10.1039/c4cc06457g
日期:——
A Pd-catalyzed decarboxylative ortho-arylation of amides with aryl acylperoxides was developed. Anilides afforded ortho-arylation products, and N-methoxyarylamides gave phenanthridinones.