Sequential Synthesis of Organosilicon-Linked 2-Methoxypyridines by Non-Cryogenic<i>ortho</i>-Metallation Using the<i>n</i>Bu<sub>2</sub>TMPMg·Li Reagent and Hydrosilylation
作者:Łukasz Struk、Jacek G. Sośnicki、Tomasz J. Idzik、Gabriela Maciejewska
DOI:10.1002/ejoc.201501570
日期:2016.3
The non-cryogenic synthesis of 5/6- and/or 3-silyl-functionalised 2-methoxypyridines by a 5-Br/Mg exchange process using nBu2iPrMg Li and LiCl and involving C-3 metallation using a novel nBu2TMPMg Li reagent is described. Furthermore, the usefulness of nBu2TMPMg Li in the functionalisation of 2-methoxypyridine at the 3-position with a wide range of electrophiles was successfully tested. The above achievements
描述了使用 nBu2iPrMg Li 和 LiCl 通过 5-Br/Mg 交换过程非低温合成 5/6-和/或 3-甲硅烷基官能化的 2-甲氧基吡啶,并涉及使用新型 nBu2TMPMg Li 试剂的 C-3 金属化。此外,成功地测试了 nBu2TMPMg Li 在 3-位 2-甲氧基吡啶官能化中的有用性和广泛的亲电子试剂。上述成果允许使用迄今为止很少应用的 [Pt(cod)Me2],通过 5-和/或 3-SiH(或烯基)衍生物的氢化硅烷化来构建由二环、三环和四环组成的有机硅连接的 2-甲氧基吡啶。 ] 催化剂。此外,合成由八个 2-甲氧基吡啶组成的单链低聚物,通过氢化硅烷化/聚合方法获得,
Thieme Chemistry Journals Awardees – Where Are They Now? Titanium-Catalyzed Hydroaminoalkylation of Vinylsilanes and a One-Pot Procedure for the Synthesis of 1,4-Benzoazasilines
作者:Sven Doye、Lars Lühning、Michael Rosien
DOI:10.1055/s-0036-1589048
日期:2017.11
Vinylsilanes undergo intermolecular alkenehydroaminoalkylation with secondary amines in the presence of a titanium mono(aminopyridinato) catalyst to give the branched hydroaminoalkylation products with high regioselectivity. Corresponding reactions of a suitable (2-bromophenyl)vinylsilane combined with a subsequent intramolecular Buchwald–Hartwig amination result in the development of an elegant one-pot
Development of a Pilot-Plant Process for a Nevirapine Analogue HIV NNRT Inhibitor
作者:Carl A. Busacca、Mike Cerreta、Yong Dong、Magnus C. Eriksson、Vittorio Farina、XuWu Feng、Ji-Young Kim、Jon C. Lorenz、Max Sarvestani、Robert Simpson、Rich Varsolona、Jana Vitous、Scot J. Campbell、Mark S. Davis、Paul-James Jones、Daniel Norwood、Fenghe Qiu、Pierre L. Beaulieu、Jean-Simon Duceppe、Bruno Haché、Jim Brong、Fang-Ting Chiu、Tom Curtis、Jason Kelley、Young S. Lo、Tory H. Powner
DOI:10.1021/op8000756
日期:2008.7.1
The pilot-plant synthesis of nevirapine analogue 1 is described. The compound was prepared in eight steps from substituted pyridine raw materials and 4-hydroxyquinoline. The key transformation involves a novel one-pot conversion of an arylhalide to arylacetic acid under palladium catalysis, followed by regioselective reduction via in situ generated BH3/THF to the arylethanol intermediate 2. All stages
Hydroboration of vinylsilanes providing diversity-oriented hydrophobic building blocks for biofunctional molecules
作者:Nao Namba、Shinya Fujii
DOI:10.1039/d4ob00632a
日期:——
agonist to an antagonist. Our results indicate that silylethanols are useful for structural development, and vinylsilanes are a versatile source of hydrophobic building blocks for obtaining biofunctionalmolecules.
Nickel-catalyzed cross-electrophile couplings of aryl fluorosulfates with vinyl chlorosilanes
作者:Jin-He Na、Hong-Jian Du、Jia-Wen Jing、Xue-Qiang Chu、Xiao-Chun Hang、Zhi-Liang Shen、Xiaocong Zhou、Haiqing Luo
DOI:10.1016/j.jcat.2024.115636
日期:2024.9
fluorosulfates with vinyl chlorosilanes by using nickel as transition metal catalyst and manganese as reductant has been achieved. The reactions proceeded smoothly at room temperature via C-O bond activation to give a series of structurally varied aryl silanes in moderate to good yields, displaying broad substrate generality and good functional group compatibility. In addition, the reaction could be subjected