Sulfone Group as a Versatile and Removable Directing Group for Asymmetric Transfer Hydrogenation of Ketones
作者:Vijyesh K. Vyas、Guy J. Clarkson、Martin Wills
DOI:10.1002/anie.202004658
日期:2020.8.17
The sulfone functional group has a strong capacity to direct the asymmetrictransferhydrogenation (ATH) of ketones in the presence of [(arene)Ru(TsDPEN)H] complexes by adopting a position distal to the η6‐arene ring. This preference provides a means for the prediction of the sense of asymmetric reduction. The sulfone group also facilitates the formation of a range of reduction substrates, and its
N-bromosuccinimide mediated decarboxylative sulfonylation of β-keto acids with sodium sulfinates toward β-keto sulfones: Evaluation of human carboxylesterase 1 activity
作者:Fuzhong Han、Bobo Su、Peifang Song、Yaqiao Wang、Lina Jia、Shanshan Xun、Minggang Hu、Liwei Zou
DOI:10.1016/j.tet.2018.08.024
日期:2018.10
decarboxylative sulfonylation of β-keto acids with sodium sulfinates is developed. The transformation exhibits a broad substrate scope and good functional group tolerance. Preliminary mechanistic studies showed that this reaction is likely to proceed through a nucleophilic substitution of β-keto acid with sulfonyl bromide pathway. All synthesized β-keto sulfones were evaluated the inhibitory effect against human