5-Position-selective C–H trifluoromethylation of 8-aminoquinoline derivatives
作者:Yoichiro Kuninobu、Mitsumi Nishi、Motomu Kanai
DOI:10.1039/c6ob01325b
日期:——
We developed a copper-catalyzed 5-position-selective C–H trifluoromethylation of 8-aminoquinoline derivatives. The reaction proceeded with high functional group tolerance under mild conditions. In the case of quinolines with an amide, carbamate, urea, or sulfonamide group at the 8-position of quinoline moieties, a radical scavenger experiment indicated that the reaction proceeded via a radical pathway
trifluoromethylation of various aromatic compounds with Umemoto reagent II (2,8-difluoro-5-(trifluoromethyl)-5H-dibenzo[b,d]thiophen-5-ium triflate) proceeded in moderate to good yields under simple photo-irradiation conditions without any catalyst, additive, or activator. UV-Vis and NMR spectral analyses indicated that pre-formation of an electron donor-acceptor complex between the trifluoromethylating
Heterogeneous Chitosan@Copper(II)-Catalyzed Remote Trifluoromethylation of Aminoquinolines with the Langlois Reagent by Radical Cross-Coupling
作者:Chao Shen、Jun Xu、Beibei Ying、Pengfei Zhang
DOI:10.1002/cctc.201601068
日期:2016.12.7
The first remote C−Htrifluoromethylation of N‐(quinolin‐8‐yl)benzamide derivatives was accomplished with a user‐friendly chitosan‐based heterogeneous copper catalyst under mild conditions. The position‐selectiveC−Hactivation protocol afforded the corresponding coupling products in good to excellent yields with excellent reusability of the catalyst by using the low‐costing and stable Langlois reagent
N-(喹啉-8-基)苯甲酰胺衍生物的第一个远程CH-H三氟甲基化反应是在温和的条件下使用易于使用的壳聚糖基异质铜催化剂完成的。通过使用低成本且稳定的Langlois试剂(CF 3 SO 2 Na)作为“ CF 3 ”来源,位置选择性的C H活化方案以良好的产率提供了出色的产率,并具有优异的催化剂可重复使用性。此外,控制实验表明,单电子转移过程在异质C-CF 3交叉耦合中起着至关重要的作用。
Novel Sulfonaminoquinoline Hepcidin Antagonists
申请人:Buhr Wilm
公开号:US20120214803A1
公开(公告)日:2012-08-23
The present invention relates to novel hepcidin antagonists, pharmaceutical compositions comprising them and the use thereof as medicaments for the use in the treatment of iron metabolism disorders, such as, in particular, iron deficiency diseases and anemias, in particular anemias in connection with chronic inflammatory diseases.
Trifluoromethylation of aromatic and hetero-aromatic compounds by CF3I in the presence of Fe(II) compound, H2O2 and dimethylsulfoxide was investigated. Various trifluoromethylated benzene derivatives, six-membered nitrogen-containing aromaticcompounds and five-membered hetero-aromatic compounds were obtained under mild conditions. General orientation of electrophilic substitution of aromaticcompounds was observed
研究了在Fe(II)化合物,H 2 O 2和二甲基亚砜的存在下,CF 3 I对芳族和杂芳族化合物的三氟甲基化作用。在温和条件下获得了各种三氟甲基化苯衍生物,六元含氮芳族化合物和五元杂芳族化合物。与先前在其他自由基三氟甲基化中报道的类似,观察到芳族化合物的亲电子取代的一般取向。