Synthesis of α-Aryl Nitriles through Palladium-Catalyzed Decarboxylative Coupling of Cyanoacetate Salts with Aryl Halides and Triflates
作者:Rui Shang、Dong-Sheng Ji、Ling Chu、Yao Fu、Lei Liu
DOI:10.1002/anie.201006763
日期:2011.5.2
Worth its salt: The palladium‐catalyzed decarboxylativecoupling of the cyanoacetate salt as well as its mono‐ and disubstituted derivatives with aryl chlorides, bromides, and triflates is described (see scheme). This reaction is potentially useful for the preparation of a diverse array of α‐arylnitriles and has good functional group tolerance. S‐Phos=2‐(2,6‐dimethoxybiphenyl)dicyclohexylphosphine)
We have developed a high-efficiency and practical Cu-catalyzed cross-coupling to directly construct versatile α-aryl-esters by utilizing readily available aryl bromides (or chlorides) and malonates. These gram-scale approaches occur with turnovers of up to 1560 and are smoothly conducted by the usage of a low catalyst loading, a new available ligand, and a green solvent. A variety of functional groups
Chemoselective Quinoline and Isoquinoline Reduction by Energy Transfer Catalysis Enabled Hydrogen Atom Transfer
作者:De‐Hai Liu、Kyogo Nagashima、Hui Liang、Xue‐Lin Yue、Yun‐Peng Chu、Shuming Chen、Jiajia Ma
DOI:10.1002/anie.202312203
日期:2023.11.27
An alkene and a (hetero)arene, to be reduced or retained? In contrast to conventional processes, in the reported hydrogen atom transfer (HAT) protocol enabled by energy transfer (EnT) catalysis, the benzenoid ring of a quinoline is more easily reduced than an electron-deficient alkene. Furthermore, many reducing labile moieties, such as aryl iodides, electron-deficient alkynes, benzsulfamides, and