开发了一类在 d 5SICS与 d MMO2、d DMO或 d NaM之间形成的可复制非天然 DNA 碱基对。为了探索使用这些对来生产位点特异性标记的 DNA,报道了各种带有丙炔基的衍生物的合成,对其聚合酶介导的复制的分析,以及随后通过点击化学对扩增的 DNA 进行位点特异性修饰。 . 使用 d 5SICS支架,丙炔醚接头比其脂肪族类似物更好地适应,但不如之前探索的受保护炔丙基胺接头。还发现使用 d MMO2和 d DMO类似物,dmmO2公司位置对位到糖苷键是最适合于连接体附着和,尽管脂族和醚基的连接体被类似地容纳,乙炔基的核碱基芯直接附接最良好的耐受性。为了证明这些类似物的效用,我们使用了多种类似物将生物素标签定点地连接到扩增的 DNA 上。最后,我们使用 d 5SICS CO –d NaM将一种或两种蛋白质与扩增的 DNA 结合,通过原子力显微镜观察双标记产物。在 PCR 可扩增 DNA
The novel reagent system, PhI(OAc) 2 -LiX combination in fluoroalcohol solvents, was found to be effective for halodecarboxylation of electron-rich arenecarboxylic acids. The method provided an efficient route to halogenated phenol ether derivatives.
Photocatalytic Oxidative Iodination of Electron‐Rich Arenes
作者:Rok Narobe、Simon J. S. Düsel、Jernej Iskra、Burkhard König
DOI:10.1002/adsc.201900298
日期:2019.9.3
A visible‐light‐mediated oxidative iodination of electron‐rich arenes has been developed. 2.5 mol% of unsubstituted anthraquinone as photocatalyst were used in combination with elementary iodine, trifluoroacetic acid and oxygen as the terminal oxidant. The iodination proceeds upon irradiation in non‐ or weakly‐electron donating solvents (DCM, DCE and benzene) wherein a spectral window in strongly coloured
The reaction of aromatic ethers with benzyltrimethylammonium dichloroiodate(1-) in acetic acid in the presence of zinc chloride at room temperature gave iodo-substituted aromatic ethers in good yields.
Metal-Free, Oxidant-Free, and Controllable Graphene Oxide Catalyzed Direct Iodination of Arenes and Ketones
作者:Jingyu Zhang、Shiguang Li、Guo-Jun Deng、Hang Gong
DOI:10.1002/cctc.201701182
日期:2018.1.23
oxide (GO)‐catalyzed iodination of arenes and ketones with iodine in a neutralmedium was explored. This iodination protocol was performed by using a simple technique to avoid the use of external metal catalysts and oxidants and harsh acidic/basic reaction conditions. In addition, by this method the degree of iodination could be controlled, and the reaction was scalable and compatible with air. This strategy