Ruthenium(II)-catalyzed Arylation of <i>ortho</i>-C–H Bonds in 2-Aroyl-imidazoles with Aryl Halides
作者:Chen-an Wang、Naoto Chatani
DOI:10.1246/cl.200886
日期:2021.4.5
The ruthenium(II)-catalyzed ortho-C−H arylation of 2-aroyl-imidazoles with aryl bromides and chloride is reported. An imidazole ring functions both as a masked ester and a directing group for C−H activation. A variety of functional groups are tolerated under the reaction conditions. The arylated final products could be easily converted into the corresponding esters and amide.
Carboxylate-Assisted Iridium (III)-Catalyzed C(sp<sup>2</sup>)–H Amidation of 2-Aroylimidazoles With Dioxazolones
作者:Sanjit K. Mahato、Naoto Chatani
DOI:10.1021/acs.joc.2c00949
日期:2022.6.17
Asymmetric Transfer Hydrogenation of Aryl Heteroaryl Ketones using Noyori‐Ikariya Catalysts
作者:Ye Zheng、Jaime A. Martinez‐Acosta、Mohammed Khimji、Luiz C. A. Barbosa、Guy J. Clarkson、Martin Wills
DOI:10.1002/cctc.202101027
日期:2021.10.19
A systematic study of the asymmetric transfer hydrogenation (AH), using [arene/Ru(II)/TsDPEN] pre-catalysts, of a range of heterocyclic ketones is described. The products are formed in very high ee in cases where an ortho-substituted aromatic ring opposes the heterocycle on the ketone group. This provides a practical and selective access to a range of hetereocyclic alcohols in high ee, for the by ATH
描述了使用 [芳烃/Ru(II)/TsDPEN] 预催化剂对一系列杂环酮进行不对称转移氢化 (AH) 的系统研究。在邻位取代的芳环与酮基上的杂环相对的情况下,产物以非常高的 ee 形成。这为使用 Noyori-Ikariya 催化剂的 ATH 提供了实用和选择性地获得一系列高 ee 杂环醇。