palladium-catalyzed highly regio- and diastereoselective arylboration of alkenylarenes has been developed. This chemistry afforded the benzylic boronic esters with a broad substrate scope, which are valuable synthetic intermediates for organic synthesis. The chiral anion phase-transfer strategy was designed for this transformation to realize the regio-, diastereo-, and enantioselective control of this reaction
Synthetic route for the preparation of substituted 2-phenyl-1,2,3,4-tetrahydronaphthalene-1-ols
申请人:LEK Pharmaceuticals d.d.
公开号:EP2644603A1
公开(公告)日:2013-10-02
The present invention relates in general to the field of organic chemistry and in particular to the preparation of 2-phenyl-1,2,3,4-tetrahydronaphthalene-1-ol substituted with a protected hydroxyl group. These compounds can be used as intermediates in the synthesis of pharmaceutically active agents such as lasofoxifene or derivatives thereof.
Copper-catalyzed asymmetric hydrogenation of 2-substituted ketones <i>via</i> dynamic kinetic resolution
作者:Olga V. Zatolochnaya、Sonia Rodríguez、Yongda Zhang、Kendricks S. Lao、Sergei Tcyrulnikov、Guisheng Li、Xiao-Jun Wang、Bo Qu、Soumik Biswas、Hari P. R. Mangunuru、Daniel Rivalti、Joshua D. Sieber、Jean-Nicolas Desrosiers、Joyce C. Leung、Nelu Grinberg、Heewon Lee、Nizar Haddad、Nathan K. Yee、Jinhua J. Song、Marisa C. Kozlowski、Chris H. Senanayake
DOI:10.1039/c8sc00434j
日期:——
A new class of tunable heterophosphole dimeric ligands have been designed and synthesized. These ligands have enabled the first examples of Cu-catalyzed hydrogenation of 2-substituted-1-tetralones and related heteroaryl ketones via dynamic kinetic resolution, simultaneously creating two contiguous stereogenic centers with up to >99 : 1 dr and 98 : 2 er. The ligand-Cu complexes were isolated and characterized
设计并合成了一类新型可调节杂磷二聚体配体。这些配体通过动态动力学拆分实现了铜催化 2-取代-1-四氢萘酮和相关杂芳基酮氢化的第一个例子,同时产生了两个连续的立体中心,其高达 >99 : 1 dr 和 98 : 2 er。通过单晶 X 射线分离并表征了配体-Cu 配合物,DFT 计算揭示了一种新型杂配二聚氢化铜过渡态。
RuPHOX–Ru catalyzed asymmetric hydrogenation of α-substituted tetralones <i>via</i> a dynamic kinetic resolution
The efficient RuPHOX–Ru catalyzed asymmetric hydrogenation of α-substituted tetralones via a dynamic kineticresolution has been achieved for the synthesis of chiral tetrahydronaphthols. The mechanism study indicated that hydrogenation with H2 gas, rather than transfer hydrogenation with EtOH solvent as the hydrogen source, predominates in the reaction pathway.
Photoredox-Driven Three-Component Coupling of Aryl Halides, Olefins, and O<sub>2</sub>
作者:Mark C. Maust、Simon B. Blakey
DOI:10.1021/acscatal.3c05988
日期:2024.2.16
hydroxyarylation reaction that utilizes aryl halides, olefins, and O2 as the reaction components. Crucial to this advance was an oxidative, rather than a reductive, approach to aryl radical generation, which enables reaction tolerance to O2. This methodology displays a broad functional group tolerance with a variety of functionalized aryl halides and a broad array of olefins. Development of this methodology enables
现代有机合成需要以温和有效的方式将丰富的原料化学品结合在一起的方法。为了帮助实现这一目标,我们开发了一种多组分自由基羟基芳基化反应,该反应利用芳基卤、烯烃和O 2作为反应组分。这一进展的关键是芳基自由基生成的氧化而非还原方法,这使得反应能够耐受 O 2 。该方法显示出对各种官能化芳基卤化物和多种烯烃的广泛官能团耐受性。该方法的开发使得能够从简单的市售起始材料快速获得生物相关的羟基芳基产品。