Nickel-Catalyzed Borylation of Aryl- and Benzyltrimethylammonium Salts via C–N Bond Cleavage
摘要:
By developing a mild Ni-catalyzed system, a method for direct borylation of sp(2) and sp(3) C-N bonds has been established. The key to this hightly efficient C-N bond borylative cleavage depends on the appropriate choice of the nickel catalyst Ni(COD)(2), ICy center dot HCl as a ligand, and the use of 2-ethoxyethanol as the cosolvent. This transformation shows good functional group compatibility and can serve as powerful synthetic tool for gram-scale synthesis and late-stage C-N borylation of complex compounds.
[EN] THIENO[3,2-C]PYRIDIN-4(5H)-ONES AS BET INHIBITORS<br/>[FR] THIÉNO[3,2-C]PYRIDIN-4(5H)-ONES UTILES COMME INHIBITEURS DE BET
申请人:GLAXOSMITHKLINE LLC
公开号:WO2014078257A1
公开(公告)日:2014-05-22
Thienopyridone compounds of formula (I) or a salt thereof, pharmaceutical compositions containing such compounds and their use in therapy, in particular in the treatment of diseases or conditions for which a bromodomain inhibitor is indicated.
Synthesis of Boron-Substituted Diaryliodonium Salts and Selective Transformation into Functionalized Aryl Boronates
作者:Motoki Ito、Itsuki Itani、Yosuke Toyoda、Koji Morimoto、Toshifumi Dohi、Yasuyuki Kita
DOI:10.1002/anie.201206917
日期:2012.12.7
Dormant boron awaits its true destiny in diaryliodoniumsalts synthesized from aryl boronate derivatives according to two alternative general methods with hypervalent iodine(III) reagents and fluoroalcohol solvents: transformation of an aryl CH bond and boron–iodine(III) exchange (see scheme; FG=functional group). The salts could be functionalized by both catalyst‐free and metal‐catalyzed reactions
Nickel-Catalyzed Borylation of Aryl- and Benzyltrimethylammonium Salts via C–N Bond Cleavage
作者:Jiefeng Hu、Heqing Sun、Wangshui Cai、Xinghui Pu、Yemin Zhang、Zhuangzhi Shi
DOI:10.1021/acs.joc.5b02557
日期:2016.1.4
By developing a mild Ni-catalyzed system, a method for direct borylation of sp(2) and sp(3) C-N bonds has been established. The key to this hightly efficient C-N bond borylative cleavage depends on the appropriate choice of the nickel catalyst Ni(COD)(2), ICy center dot HCl as a ligand, and the use of 2-ethoxyethanol as the cosolvent. This transformation shows good functional group compatibility and can serve as powerful synthetic tool for gram-scale synthesis and late-stage C-N borylation of complex compounds.
Metallo-β-lactamase inhibitory activity of phthalic acid derivatives
4-Butyl-3-methylphthalic acid was recognized as a metallo-β-lactamase inhibitor. The structure–activity relationship study of substituted phthalicacids afforded 3-phenylphthalic acidderivatives as potent IMP-1 inhibitors. On the other hand, 3-substituted with 4-hydroxyphenyl phthalicacidderivative displayed a potent combination effect with biapenem (BIPM) against Pseudomonas aeruginosa that produce