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.
An efficient and versatile synthesis of chiral tetralins has been developed using both inter- and intra-molecular Friedel Crafts alkylation as a key step. The readily available hydronaphthalene substrates were prepared via a highly enantioselective metal-catalyzed ring opening of meso-oxabicyclic alkenes followed by hydrogenation. A wide variety of complex tetracyclic compounds have been isolated with high levels of regio-, diastereo-, and enantioselectivity.
Synthetic Estrogens, Implantation Inhibitors, and Hypocholesterolemic Agents. I. Tetrahydronaphthalene Series
作者:W. L. Bencze、L. I. Barsky、R. W. J. Carney、A. A. Renzi、George. deStevens