Introduction of Heteroaromatic Bases onto Cycloalkanes with BPO
作者:Luan Zhou、Hideo Togo
DOI:10.1002/ejoc.201801797
日期:2019.2.21
Treatment of heteroaromatics with BPO and CF3CO2H in cycloalkanes at 100 °C for 4 h generated C–C bonded heteroaromaticbases bearing cycloaklyl group in good yields under transition‐metal‐free conditions.
在环烷烃中,用BPO和CF 3 CO 2 H在100°C下处理杂芳族化合物4小时,在无过渡金属的条件下,生成的具有C-C键合的带有环烯丙基的杂芳族碱的收率很高。
Direct Arylation of Unactivated Alkanes with Heteroarenes by Visible-Light Catalysis
we describe the successful arylation of unactivated alkanes with heteroarenes by using iridium polypyridyl complexes as the photocatalyst and persulfate as the HAT catalyst precursor under visible-light irradiation. This reaction features good functional group tolerance and broad scope with regard to both alkane and heteroarene substrates (37 examples), which allows direct access to alkyl-substituted
Photo-Induced Cross-Dehydrogenative Alkylation of Heteroarenes with Alkanes under Aerobic Conditions
作者:Jun Xu、Heng Cai、Jiabin Shen、Chao Shen、Jie Wu、Pengfei Zhang、Xiaogang Liu
DOI:10.1021/acs.joc.1c02125
日期:2021.12.17
We report a Minisci-type cross-dehydrogenative alkylation in an aerobic atmosphere using abundant and inexpensive cerium chloride as a photocatalyst and air as an oxidant. This photoreaction exhibits excellent tolerance to functional groups and is suitable for both heteroarene and alkane substrates under mild conditions, generating the corresponding products in moderate-to-good yields. Our method provides
Metal–Organic Layers for Synergistic Lewis Acid and Photoredox Catalysis
作者:Yangjian Quan、Guangxu Lan、Yingjie Fan、Wenjie Shi、Eric You、Wenbin Lin
DOI:10.1021/jacs.9b12593
日期:2020.1.29
Metyrapone. The superior catalytic performance of Hf12-Ir-OTf over a mixture of photoredox catalyst and stoichiometric amounts of Brønstedacids or sub-stoichiometric amounts (20 mol%) of Lewis acids is attributed to the close proximity (1.2 nm) between photoredox and Lewis acid catalysts in Hf12-Ir-OTf, which not only facilitates the reaction between the carbon radical and the activated heteroarene but
Electrophotocatalytic C−H Functionalization of N‐Heteroarenes with Unactivated Alkanes under External Oxidant‐Free Conditions
作者:Zhoumei Tan、Xinrui He、Kun Xu、Chengchu Zeng
DOI:10.1002/cssc.202102360
日期:2022.3.22
Two technologies, one goal: A sustainable electrophotocatalytic strategy to access alkyl radicals from unactivatedalkanes for the following Minisci alkylation reactions is developed. This method features broad substrate generality, earth-abundant cerium catalyst, external oxidant-free conditions, and excellent atom economy.