Remote Nickel-Catalyzed Cross-Coupling Arylation via Proton-Coupled Electron Transfer-Enabled C–C Bond Cleavage
作者:Long Huang、Tengfei Ji、Magnus Rueping
DOI:10.1021/jacs.9b12490
日期:2020.2.19
carbon-carbon bond activation is still rather underdeveloped due to the bond inertness. Herein, we report a mild and general strategy for the activation of a diverse set of readily available cyclic alcohols for the remote and site-specific arylation of ketones via the combination of photoredox-mediated multisite concerted proton-electron transfer (MS-PCET) and nickel catalysis. The current cross-coupling proceeds
Organophotocatalytic ring opening/remote trifluoromethylselenolation of cycloalkanols
作者:Qingyao Zhang、Wanqiang Yuan、Yingbo Shi、Fei Pan
DOI:10.1016/j.tetlet.2022.153787
日期:2022.5
An organophotocatalytic ringopening/remote trifluoromethylselenolation of cycloalkanols is reported. This reaction proceeds the radical ring-opening in a photocatalytic system without metal catalysis under mild conditions, followed by the formation of the remote C(sp3)-SeCF3 bond in the presence of PhSO2SeCF3. The reaction brings out highly reactive to prepare trifluoromethylselenolated carbonyl compounds
Electrochemical Deconstructive Functionalization of Cycloalkanols via Alkoxy Radicals Enabled by Proton-Coupled Electron Transfer
作者:Mishra Deepak Hareram、Albara A. M. A. El Gehani、James Harnedy、Alex C. Seastram、Andrew C. Jones、Matthew Burns、Thomas Wirth、Duncan L. Browne、Louis C. Morrill
DOI:10.1021/acs.orglett.2c01552
日期:2022.6.3
Herein, we report a new electrochemical method for alkoxyradical generation from alcohols using a proton-coupled electron transfer (PCET) approach, showcased via the deconstructive functionalization of cycloalkanols. The electrochemical method is applicable across a diverse array of substituted cycloalkanols, accessing a broad range of synthetically useful distally functionalized ketones. The orthogonal
The photoredox/Ni dual catalysis is an appealing strategy to enable unconventional C–heteroatom bondformation. While significant advances have been achieved using this system, intermolecular C(sp3)–N bondformation has been relatively underdeveloped due to the difficulty in C(sp3)–N reductive elimination. Herein, we present a new mechanistic approach that utilizes dioxazolones as the Ni(II)-nitrenoid
Synthesis and anticonvulsant activity of 1-phenylcyclohexylamine analogs
作者:Andrew Thurkauf、Brian De Costa、Shunichi Yamaguchi、Mariena V. Mattson、Arthur E. Jacobson、Kenner C. Rice、Michael A. Rogawski
DOI:10.1021/jm00167a027
日期:1990.5
moderate correlation with the affinities for PCP sites. Several analogues exhibited a greater separation of potencies in the motor toxicity and MES seizure tests than did the parent compound PCA. These were obtained by (i) 3-methylation of the cyclohexyl ring trans to the phenyl ring, (ii) methoxylation at the ortho position on the phenyl ring, and (iii) contraction of the cyclohexane ring to form the corresponding