Copper-Mediated Perfluoroalkylation of Heteroaryl Bromides with (phen)CuR<sub>F</sub>
作者:Michael G. Mormino、Patrick S. Fier、John F. Hartwig
DOI:10.1021/ol500422t
日期:2014.3.21
synthetic goal over the past several decades. Previously, our group reported phenanthroline-ligated perfluoroalkyl copperreagents, (phen)CuRF, which react with aryliodides and aryl boronates to form the corresponding benzotrifluorides. Herein the perfluoroalkylation of a series of heteroaryl bromides with (phen)CuCF3 and (phen)CuCF2CF3 is reported. The mild reaction conditions allow the process to tolerate
Cyclization of<i>o</i>-Functionalized α-Trifluoromethylstyrenes: Synthesis of Isoquinoline Derivatives Bearing Fluorinated One-Carbon Units
作者:Takashi Mori、Yu Iwai、Junji Ichikawa
DOI:10.1246/cl.2005.778
日期:2005.6
α-Trifluoromethylstyrenes with a formimidoyl, an N-hydroxyformimidoyl, or a tosylamidomethyl group at the ortho position undergo intramolecular addition or SN2′-type substitution at the trifluoromethylvinyl moiety, leading to a variety of isoquinoline derivatives bearing 4-trifluoromethyl, 4-difluoromethyl, and 4-difluoromethylene groups.
The photochemical introduction of trifluoromethyl group with CF3Br in aromatic and heteroaromatic rings was investigated for 9 compounds. Naphthalene, anthracene, anisole, N,N-dimethylaniline, ferrocene, benzo[b]thiophene, isoquinoline, and N-methylpyrrole gave trifluoromethylated products in 6.5–100% yields. In one step from uracil, a pharmacologically important 5-trifluoromethyluracil can be synthesized
Radical and ionic
<i>meta</i>
-C–H functionalization of pyridines, quinolines, and isoquinolines
作者:Hui Cao、Qiang Cheng、Armido Studer
DOI:10.1126/science.ade6029
日期:2022.11.18
Carbon-hydrogen (C−H) functionalization of pyridines is a powerful tool for the rapid construction and derivatization of many agrochemicals, pharmaceuticals, and materials. Because of the inherent electronic properties of pyridines, selective meta -C−H functionalization is challenging. Here, we present a protocol for highly regioselective meta -C−H trifluoromethylation, perfluoroalkylation, chlorination
3-Position-Selective C–H Trifluoromethylation of Pyridine Rings Based on Nucleophilic Activation
作者:Ryuhei Muta、Takeru Torigoe、Yoichiro Kuninobu
DOI:10.1021/acs.orglett.2c03327
日期:2022.11.11
the 3-position-selective C(sp2)–H trifluoromethylation of pyridine rings was established. 3-Position-selective trifluoromethylation was achieved by the nucleophilic activation of pyridine and quinoline derivatives through hydrosilylation and successive electrophilic trifluoromethylation of the enamine intermediate. This reaction was applicable to perfluoroalkylation at the 3 position of the pyridine