Late-Stage <i>N</i>-Me Selective Arylation of Trialkylamines Enabled by Ni/Photoredox Dual Catalysis
作者:Yangyang Shen、Tomislav Rovis
DOI:10.1021/jacs.1c08157
日期:2021.10.13
The diversity and wide availability of trialkylamines render them ideal sources for rapid construction of complex amine architectures. Herein, we report that a nickel/photoredox dual catalysis strategy affects site-selective α-arylation of various trialkylamines. Our catalytic system shows exclusive N-Me selectivity with a wide range of trialkylamines under mild conditions, even in the context of late-stage
A radical approach to the copper oxidative addition problem: Trifluoromethylation of bromoarenes
作者:Chip Le、Tiffany Q. Chen、Tao Liang、Patricia Zhang、David W. C. MacMillan
DOI:10.1126/science.aat4133
日期:2018.6
Arenes get a light boost onto copper Insertion of palladium into an aryl halide bond is the first step in numerous variants of cross-coupling chemistry used to make carbon-carbon bonds. Copper is an appealing alternative catalyst for such reactions because of its abundance and downstream reactivity profile. However, this preliminary step, termed oxidative addition, is often prohibitively slow for the
Formal β‐C−H Arylation of Aldehydes and Ketones by Cooperative Nickel and Photoredox Catalysis
作者:Kun Liu、Armido Studer
DOI:10.1002/anie.202206533
日期:2022.8
Formal β-C−H (hetero)arylation of aldehydes and ketones via their readily prepared silyl enol ethers has been achieved by dual nickel and photoredox catalysis. This reaction features broad scope and excellent functional group tolerance.
Metallaphotoredox-enabled deoxygenative arylation of alcohols
作者:Zhe Dong、David W. C. MacMillan
DOI:10.1038/s41586-021-03920-6
日期:2021.10.21
organic synthesis. A general method for the direct deoxygenative cross-coupling of free alcohols must overcome several challenges, most notably the in situ cleavage of strong C–O bonds3, but would allow access to the vast collection of commercially available, structurally diverse alcohols as coupling partners4. We report herein a metallaphotoredox-based cross-coupling platform in which free alcohols