An easy-to-prepare, reusable and versatile catalyst consisting of oxidised copper nanoparticles on activated carbon has been fully characterised and found to effectively promote the multicomponent synthesis of 1,2,3-triazoles from organic halides, diazonium salts, and aromatic amines in water at a low copper loading.
SUBSTITUTED PYRIMIDINYL-AMINES AS PROTEIN KINASE INHIBITORS
申请人:Kamenecka Theodore Mark
公开号:US20130231336A1
公开(公告)日:2013-09-05
The present invention provides novel substituted pyrimidinyl-amines that are useful as inhibitors of protein kinases, especially c-Jun N-terminal kinases (JNK) and pharmaceutical compositions thereof and methods of using the same for treating conditions responsive to the inhibition of the JNK pathway.
Substituted pyrimidinyl-amines as protein kinase inhibitors
申请人:Kamenecka Theodore
公开号:US08530480B2
公开(公告)日:2013-09-10
The present invention provides novel substituted pyrimidinyl-amines that are useful as inhibitors of protein kinases, especially c-Jun N-terminal kinases (JNK) and pharmaceutical compositions thereof and methods of using the same for treating conditions responsive to the inhibition of the JNK pathway.
Application of Hantzsch Dihydropyridine in Copper-Catalyzed [3 + 2] Cycloaddition of Terminal Alkynes with Azides
作者:Zuxi Jin、Peng Xue、Enqin Fu
DOI:10.1080/00397911.2013.789113
日期:2014.1.2
2,6-Dimethyl-3,5-bis(ethoxycarbonyl)-1,4-dihydropyridine (dihydropyridine Hantzsch ester, DHPHE) and CuSO45H2O efficiently accelerated azide-alkyne cycloaddition reactions of both aliphatic and aromatic substrates and gave 1,4-disubstituted 1,2,3-triazoles as the only isomer in good to excellent yields at room temperature with 1mol% of CuSO45H2O/DHPHE (1:1 in molar ratio). The reaction could be carried out smoothly in methanol in air with high efficiency. DHPHE may play multiple important roles in the reaction: a reducing reagent to generate the catalytic center copper(I) from CuSO4, a base to help form the intermediate acetylide, and a ligand to stabilize the catalytic copper(I) species via coordination after being transformed to pyridine derivative. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resource(s): Full experimental and spectral details.]
Melai, Valeria; Brillante, Aldo; Zanirato, Paolo, Journal of the Chemical Society. Perkin Transactions 2 (2001), 1998, # 11, p. 2447 - 2449