[EN] PROCESS FOR PREPARING 5-FLUORO-1H-PYRAZOLO [3, 4-B] PYRIDIN-3-AMINE AND DERIVATIVES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE LA 5-FLUORO-1H-PYRAZOLO[3,4-B]PYRIDIN-3-AMINE ET DES DÉRIVÉS DE CELLE-CI
申请人:VERTEX PHARMA
公开号:WO2009018415A1
公开(公告)日:2009-02-05
The present invention relates to a process for the synthesis of 5-fluoro-1H-pyrazolo [3, 4-b]pyridin-3-amine in high yield and purity. The present invention also relates to processes for the synthesis of 5-fluoro-1H-pyrazolo [3, 4- b] ρyridin-3-amine derivatives. These processes are useful for preparing biologically active compounds, particularly certain GSK-3 inhibitors, or derivatives thereof. Reagents and conditi ons : i. Pd ( OAc )2, PPh3, Et3N, H2CO2; i i. 1 ) (COCl )2, CH2Cl2, cat. DMF; 2 ) NH3 (g ), dioxane, i i i. TFAA, Et3N, CH2Cl2, O°C; iv. H2NNH2. H2O, n-butanol, reflux.
Diacetyl as a “traceless” visible light photosensitizer in metal-free cross-dehydrogenative coupling reactions
作者:Chia-Yu Huang、Jianbin Li、Wenbo Liu、Chao-Jun Li
DOI:10.1039/c8sc05631e
日期:——
light-sensitive and “traceless” hydrogen atom abstractor to achieve metal-free cross-dehydrogenative Minisci alkylation under mild conditions. Mechanistic studies supported hydrogen atom transfer (HAT) between an activated C(sp3)–H substrate and diacetyl. Moreover, with the assistance of di-tert-butyl peroxide (DTBP), the scope of the reaction could be extended to strong aliphatic C–H bonds via diacetyl-mediated
Desulfonative photoredox alkylation of <i>N</i>-heteroaryl sulfones – an acid-free approach for substituted heteroarene synthesis
作者:Zheng-Jun Wang、Shuai Zheng、Jennifer K. Matsui、Zhipeng Lu、Gary A. Molander
DOI:10.1039/c9sc00776h
日期:——
Minisci-type alkylation of electron-deficient heteroarenes has been a pivotal technique for medicinal chemists in the synthesis of drug-like molecules. However, such transformations usually require harsh conditions (e.g., strong acids, stoichiometric amount of oxidants, elevated temperatures, etc.). Herein, by utilizing photoredoxcatalysis, a highly-selective alkylation method using heteroaryl sulfones
AMINOPYRIMIDINES USEFUL AS INHIBITORS OF PROTEIN KINASES
申请人:Jimenez Juan-Miguel l
公开号:US20100022507A1
公开(公告)日:2010-01-28
The present invention relates to compounds useful as inhibitors of protein kinase. The invention also provides pharmaceutically acceptable compositions comprising said compounds and methods of using the compositions in the treatment of various disease, conditions, or disorders. The invention also provides processes for preparing compounds of the inventions.
Aminopyrimidines useful as inhibitors of protein kinases
申请人:Jimenez Juan-Miguel
公开号:US08426425B2
公开(公告)日:2013-04-23
The present invention relates to compounds useful as inhibitors of protein kinase. The invention also provides pharmaceutically acceptable compositions comprising said compounds and methods of using the compositions in the treatment of various disease, conditions, or disorders. The invention also provides processes for preparing compounds of the inventions.