Trifluoromethylthiolation and Trifluoromethylselenolation of α-Diazo Esters Catalyzed by Copper
作者:Christian Matheis、Thilo Krause、Valentina Bragoni、Lukas J. Goossen
DOI:10.1002/chem.201602730
日期:2016.8.22
α‐Diazo esters are smoothly converted into the corresponding trifluoromethyl thio‐ or selenoethers by reaction with Me4NSCF3 or Me4NSeCF3, respectively, in the presence of catalytic amounts of copper thiocyanate. This straightforward method gives high yields under neutral conditions at room temperature and is applicable to a wide range of functionalized molecules, including diverse α‐amino acid derivatives
Trifluoromethylselenato(0) and trifluoromethyltellurato(0) complexes of platinum(II)
作者:Natalya V. Kirij、Wieland Tyrra、Ingo Pantenburg、Daniela Naumann、Harald Scherer、Dieter Naumann、Yurii L. Yagupolskii
DOI:10.1016/j.jorganchem.2006.01.062
日期:2006.6
The series of cis/trans-trifluoromethylselenato complexes [Pt(SeCF3)2 − xClx(PPh3)2] (x = 0, 1) was identified by NMR spectroscopic methods. While in acetonitrile solution spectra are dominated by the resonances of the cis derivatives, those of pure cis-[Pt(SeCF3)2(PPh3)2] indicate cis–trans-isomerisation in CH2Cl2 solution. In contrast, exchange reactions of cis-[PtCl2(PPh3)2] and [NMe4]TeCF3 only
the ′Se′ in Selective: CF3Se-containing α-aminoacidderivatives were readily synthesized from natural amino acids and [Me4N][SeCF3]. Some of the derivatives were found to be effective inhibitors towards MCF-7, HCT116, and SK-OV-3 cells. These results implicated that the CF3Se moiety can be used as a potential pharmaceutically relevant group in the synthesis and modification of biologically active
将'Se'置于选择性: CF 3 Se 含α-氨基酸衍生物很容易由天然氨基酸和[Me 4 N][SeCF 3 ]合成。一些衍生物被发现是 MCF-7、HCT116 和 SK-OV-3 细胞的有效抑制剂。这些结果暗示CF 3 Se 部分可用作生物活性分子的合成和修饰中的潜在药学相关基团。
Nickel-Catalyzed Trifluoromethylselenolation of Aryl Halides Using the Readily Available [Me<sub>4</sub>N][SeCF<sub>3</sub>] Salt
作者:Jia-Bin Han、Tao Dong、David A. Vicic、Cheng-Pan Zhang
DOI:10.1021/acs.orglett.7b01839
日期:2017.7.21
efficient method for the construction of aryl trifluoromethylselenoethersfrom the corresponding aryl halides in the presence of Ni(COD)2 and an appropriate ligand is reported. Various aryl iodides, bromides, and chlorides were smoothly converted in this reaction by simply varying the ligand, which afforded aryl and heteroaryl trifluoromethylselenoethers in good to almost quantitative yields. The reaction