Rapid Access to Dibenzohelicenes and their Functionalized Derivatives
作者:Andrej Jančařík、Jiří Rybáček、Kevin Cocq、Jana Vacek Chocholoušová、Jaroslav Vacek、Radek Pohl、Lucie Bednárová、Pavel Fiedler、Ivana Císařová、Irena G. Stará、Ivo Starý
DOI:10.1002/anie.201301739
日期:2013.9.16
Spiraling up: Easy access to dibenzo[5]‐, dibenzo[6]‐, and dibenzo[7]helicenes (see picture) as well as their functionalizedderivatives includes Sonogashira and Suzuki–Miyaura couplings, desilylation, and [2+2+2] alkyne cycloisomerization. The simplicity of this non‐photochemical approach combined with the potential for helicity control favors dibenzohelicenes over the parent helicenes for practical
Superactive Iodination Reagent on a Base of Iodine Chloride and Silver Sulfate
作者:Vitold K. Chaikovski、Tatjana S. Kharlova、Victor D. Filimonov、Tamara A. Saryucheva
DOI:10.1055/s-1999-3475
日期:1999.5
After reaction of ICl and Ag2SO4 in sulfuric acid and separation of resulting AgCl a stable solution is formed, containing very active forms of electrophilic iodine. This solution has a powerful iodination ability with respect to aromatic compounds. Deactivated arenes are iodinated easily and in mild conditions by action of this new reagent in generally good yields of the iodoarenes.
[EN] INDOLOQUINOLONE COMPOUNDS AS ANAPLASTIC LYMPHOMA KINASE (ALK) INHIBITORS<br/>[FR] COMPOSÉS D'INDOLOQUINOLONE UTILISÉS EN TANT QU'INHIBITEURS DE KINASE DU LYMPHOME ANAPLASIQUE (ALK)
申请人:JIANGSU ASCENTAGE BIOMED DEV INC
公开号:WO2015127629A1
公开(公告)日:2015-09-03
Disclosed herein are certain indoloquinolone compounds, methods of preparation thereof, pharmaceutical compositions thereof, and uses thereof, such as their uses as ALK inhibitors
A regioselective double Stille coupling reaction was explored using bicyclic stannolanes that were easily prepared from the radical cascade reaction of β-amino-α-methylene esters. Various 1-bromo-2-iodoarenes underwent the double coupling reaction to afford benzoisoindole derivatives in a regioselective manner, where the carbon attached to the iodine selectively coupled with the vinylic carbon, and
使用容易从β-氨基-α-亚甲基酯的自由基级联反应制备的双环锡烷来研究区域选择性双Stille偶联反应。各种1-溴-2-碘代芳烃进行双偶联反应,以区域选择性方式得到苯并异吲哚衍生物,其中连接至碘的碳与乙烯基碳选择性地偶联,然后连接至溴的碳与烷基碳选择性地偶联。分子内和分子间偶联反应的结合提供了六氢茚并[1,2- b]吡咯衍生物,收率高。在过量的CsF存在下,产率进一步提高。试图鉴定反应中间体,其中用盐酸和HBr水溶液分解锡烷基锡烷,得到三联双锥体(TBP)五配位锡配合物,如通过微观分析和119 Sn NMR证实的。使用DC1进行分解选择性地将氘引入到异亚甲基单元的E-位。在钯催化剂和DABCO的存在下,该配合物顺利进行分子内Stille偶联反应,得到六氢茚并[1,2- b]吡咯,收率高。这些结果表明,双偶联反应通过TBP锡配合物进行,从而促进了芳基卤化物与Csp 3-锡键之间的第二次分子内偶联反应。