Chiral N-aryl tert-butanesulfinamide-olefin ligands for rhodium-catalyzed asymmetric 1,4-addition of aryl boronic acids to cyclic enones
作者:Shuai Yuan、Qingle Zeng、Jiajun Wang、Lihong Zhou
DOI:10.24820/ark.5550190.p009.977
日期:——
Chiral N-aryl sulfinamide-olefins which are readily synthesized via C-N coupling and nucleophilic substitution have been used as chiralligands, which demonstrate moderate to excellent asymmetric catalytic performance in the rhodium-catalyzedasymmetric1,4-addition of arylboronicacids to cyclic enones. The chiralligands are readily synthesized via C-N coupling reaction and nucleophilic substitution
Kinetic Resolution of Sulfinamides via Asymmetric <i>N</i>-Allylic Alkylation
作者:Gao-Liang Zheng、Chenxi Lu、Jin-Pei Cheng、Xin Li
DOI:10.1021/acs.orglett.1c03221
日期:2021.11.5
An efficient kineticresolution of sulfinamides via an asymmetric N-allylic alkylation reaction was realized using hydroquinine as a catalyst under mild conditions. The kineticresolution of a range of Morita–Baylis–Hillman adducts and N-aryl tert-butylsulfinamides was highly effective. In addition, the synthetic utility of the protocol was demonstrated by a scaled-up reaction. Density functional theory
The palladium-catalyzed C–N cross coupling of sulfinamides and arylhalides is reported. In the presence of Pd2(dba)3, tBuXPhos, NaOH, and a small amount of water, the C–N cross coupling of chiral tert-butanesulfinamide and arylhalides was accomplished to give N-aryl tert-butanesulfinamide without racemization, and the coupling of racemic p-toluenesulfinamide smoothly afforded N-aryl p-toluenesulfinamides