A facile synthesis of aryl esters is developed by coupling aryl carboxylicacids and aryl boronicacids in the presence of PhI(OAc)2 and carbonyl diimidazole. A wide range of functional groups were tolerant to the metal-free reaction condition that led to the desired products in good yields.
Palladium-catalyzed non-directed CH benzoxylation of simple arenes with iodobenzene dibenzoates
作者:Li Li、Ying Wang、Tingting Yang、Qian Zhang、Dong Li
DOI:10.1016/j.tetlet.2016.11.055
日期:2016.12
as both benzoxylate source and oxidant has been developed. The catalytic system was greatly promoted by a pyridine ligand. Good functional groups tolerance was showed in both hypervalentiodine reagents and arene substrates, which can be used for synthesis of aryl benzoates through simple aromatic compounds.
Directed Ni-Catalyzed Reductive Arylation of Aliphatic C–H Bonds
作者:Zhi-Yun Liu、Silas P. Cook
DOI:10.1021/acs.orglett.2c00447
日期:2022.5.13
Herein, we describe the nickel-catalyzed reductive arylation of remote C(sp3)–Hbonds with aryl electrophiles. The reaction targets secondary and tertiaryC(sp3)–Hbonds to deliver all-carbonquaternarycenters. The success of this method relies on a novel amidyl radical precursor that tolerates reducing conditions, namely O-oxalate hydroxamic acid esters.
Orthogonal C–O Bond Construction with Organogermanes
作者:Amit Dahiya、Avetik G. Gevondian、Franziska Schoenebeck
DOI:10.1021/jacs.3c01081
日期:——
involves the selective coupling of arylgermanes with alkyl alcohols (primary, secondary and tertiary) as well as carboxylic acids, tolerating otherwise widely employed coupling handles, such as aromatic (pseudo)halogens (C–I, C–Br, C–Cl, C–F, C–OTf, C–OFs), silanes and boronic acid derivatives. This unprecedented [Ge]-based C–O bond construction is rapid (15 min to few hours reaction time), air-tolerant