Cu-Catalyzed Sequential Dehydrogenation–Conjugate Addition for β-Functionalization of Saturated Ketones: Scope and Mechanism
作者:Xiaoming Jie、Yaping Shang、Xiaofeng Zhang、Weiping Su
DOI:10.1021/jacs.6b01337
日期:2016.5.4
The first copper-catalyzed direct β-functionalization of saturatedketones is reported. This protocol enables diverse ketones to couple with a wide range of nitrogen, oxygen and carbon nucleophiles in generally good yields under operationally simple conditions. The detailed mechanistic studies including kinetic studies, KIE measurements, identification of reaction intermediates, EPR and UV-visible
Ethyl Mandelate as a Convenient New Benzoyl Anion Equivalent
作者:R. Aitken、Andrew Thomas
DOI:10.1055/s-1997-770
日期:1997.3
Ethyl mandelate acts as a convenient benzoyl anion equivalent for the formation of alkyl aryl ketones by deprotonation-alkylation followed by flash vacuum pyrolysis.
A novel Friedel–Crafts alkylation of naphthols without Lewis acid
作者:Yijun Zhu、Kuaile Lin、Deyong Ye、Weicheng Zhou
DOI:10.1016/j.tetlet.2015.07.024
日期:2015.8
A novel Friedel–Crafts alkylation of α- or β-naphthols with a variety of β-haloketones is described. The reaction was environmentally-friendly performed under mild conditions without any Lewis acid and in good to excellent yields.
the amine nitrogen atom were prepared and evaluated in the asymmetrictransfer hydrogenation of ketones. Bidentate and tridentate ligands demonstrated a mutual exclusivity directly related to their function as catalysts. A broad series of ketones were reduced with these new catalysts, permitting the ready identification of an optimal catalyst for each substrate and revealing the subtle effects that changes
High-Throughput Screening Protocol for the Coupling Reactions of Aryl Halides Using a Colorimetric Chemosensor for Halide Ions
作者:Min Sik Eom、Jieun Noh、Han-Sung Kim、Soyeon Yoo、Min Su Han、Sunwoo Lee
DOI:10.1021/acs.orglett.6b00300
日期:2016.4.15
efficiency as a tool for high-throughputscreening (HTS) of transition-metal-catalyzed coupling reactions was investigated. It showed a high selectivity for halide ions. When the PAR–2Hg2+ complex was used in the Suzuki coupling reaction and C–H activated coupling reaction with aryl bromides, the quantitative and qualitative conversions of aryl halides were obtained from the reaction mixture color change