15781-96-1Relevant articles and documents
Rh(I)-Catalyzed C6-Selective Decarbonylative Alkylation of 2-Pyridones with Alkyl Carboxylic Acids and Anhydrides
Fan, Qinghua,Li, Bohan,Li, Huanrong,Walsh, Patrick J.,Xu, Lijin,Xu, Xin,Xu, Xingyu,Yu, Haiyang,Zhao, Haoqiang
, p. 4228 - 4234 (2020)
A Rh-catalyzed chelation-assisted C6-selective C-H activation/alkylation of 2-pyridones with readily available alkyl carboxylic acids or anhydrides is introduced. The reaction proceeds via substrate decarbonylation. This approach merges C-H functionalization with readily available anhydrides, allowing for the efficient synthesis of various C6-alkylated 2-pyridones with good functional group tolerance.
Isothiourea-Catalyzed Atroposelective N-Acylation of Sulfonamides
Ong, Jun-Yang,Ng, Xiao Qian,Lu, Shenci,Zhao, Yu
supporting information, p. 6447 - 6451 (2020/09/02)
We report herein an atroposelective N-acylation of sulfonamides using a commercially available isothiourea catalyst, (S)-HBTM, with a simple procedure. The N-sulfonyl anilide products can be obtained in good to high enantiopurity, which represents a new axially chiral scaffold. The application of the product as a chiral iodine catalyst is also demonstrated for the asymmetric α-oxytosylation of propiophenone.
Photochemical Asymmetric Nickel-Catalyzed Acyl Cross-Coupling
Gandolfo, Eugenio,Tang, Xinjun,Raha Roy, Sudipta,Melchiorre, Paolo
supporting information, p. 16854 - 16858 (2019/11/11)
Photochemical enantioselective nickel-catalyzed cross-coupling reactions are difficult to implement. We report a visible-light-mediated strategy that successfully couples symmetrical anhydrides and 4-alkyl dihydropyridines (DHPs) to afford enantioenriched α-substituted ketones under mild conditions. The chemistry does not require exogenous photocatalysts. It is triggered by the direct excitation of DHPs, which act as a radical source and as a reductant, facilitating the turnover of the chiral catalytic nickel complex.