Reaction of N-Nitro-benzotriazole with Nucleophiles
摘要:
N-Nitro-benzotriazole 1 reacts with various C-nucleophiles 2 in tetrahydrofuran at room temperature to afford o-nitramidophenylazo-compounds 3a-f and o-nitramidophenyl hydrazones 3g-l, respectively. Reaction of 1 with sodium azide in aqueous acetonitrile gives a reactive 2-azidophenylnitramide intermediate 4 which is trapped by Cu-catalyzed 1,3-dipolar cycloadition with phenyl acetylene to afford 1-o-nitramidophenyl-4-phenyl-1,2,3-triazole 5. Reaction of 1 with trimethylsilylcyanide affords 3-amino-benzo[e][1,2,4]triazine 6.
Product Analyses of Ozone Mediated Nitration of Benzimidazole Derivatives with Nitrogen Dioxide: Formation of 1-Nitrobenzimidazoles and Conversion to Benzotriazoles
benzimidazole derivatives having electron-withdrawing or -donating substituent(s) at the benzene moiety were used as models of the imidazole moiety of purine bases and their nitration with nitrogendioxide and ozone (so-called Kyodai nitration) were examined. Products were extracted from the reaction mixture with AcOEt and their structures were analyzed. 1-Nitrobenzimidazole derivatives and unexpected
3,4-Di-substituted cyclobutene-1,2-diones as CXC-chemokine receptor ligands
申请人:Schering Corporation
公开号:US20040106794A1
公开(公告)日:2004-06-03
There are disclosed compounds of the formula
1
or a pharmaceutically acceptable salt or solvate thereof which are useful for the treatment of chemokine-mediated diseases such as acute and chronic inflammatory disorders and cancer.
Electrochemical Nonacidic N‐Nitrosation/N‐Nitration of Secondary Amines through a Biradical Coupling Reaction
作者:Ji‐Ping Zhao、Lu‐jia Ding、Peng‐Cheng Wang、Ying Liu、Min‐Jun Huang、Xin‐Li Zhou、Ming Lu
DOI:10.1002/adsc.202000267
日期:2020.11.18
acid‐free N‐nitrosation/nitration of the N−H bonds in secondary amines with Fe(NO3)3 ⋅ 9H2O as the nitroso/nitro source through an electrocatalyzed radical coupling reaction was developed. Cyclic aliphatic amines and N‐heteroaromatic compounds were N‐nitrosated and N‐nitrated, respectively, under mild conditions. Control and competition experiments, as well as kinetic studies, demonstrate that N‐nitrosation
[EN] COMPOUNDS USEFUL IN HIV THERAPY<br/>[FR] COMPOSÉS UTILES DANS LA THÉRAPIE DU VIH
申请人:GLAXOSMITHKLINE IP DEV LTD
公开号:WO2020110056A1
公开(公告)日:2020-06-04
The invention relates to compounds of Formula (I), (Ia), (Ib), (II) or (III), salts thereof, pharmaceutical compositions thereof, as well as therapeutic methods of treatment and prevention.
Novel anthranilamide pyridinureas as VEGF receptor kinase inhibitors
申请人:Schering Aktiengesellschaft
公开号:EP1657241A1
公开(公告)日:2006-05-17
The invention relates to novel anthranilamide pyridinureas as VEGF receptor kinase inhibitors, their production and use as pharmaceutical agents for treating diseases that are triggered by persistent angiogenesis.