已开发出一种铜(II)催化的β-硝基烯烃与1 H-苯并[ d ]咪唑-2-硫醇的硫胺化反应,用于合成苯并[4,5]咪唑并[2,1– b ]噻唑衍生物。通过连续的CN和CS键形成,可以高收率获得各种N稠合的苯并咪唑并噻唑衍生物。该方案也适用于β-取代的β-硝基烯烃,以提供2,3-二取代的苯并咪唑并噻唑。
Substrate Promiscuity of <i>ortho</i>-Naphthoquinone Catalyst: Catalytic Aerobic Amine Oxidation Protocols to Deaminative Cross-Coupling and <i>N</i>-Nitrosation
作者:Tengda Si、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acscatal.9b03442
日期:2019.10.4
been identified as versatile aerobicoxidationcatalysts. Primary amines were readily cross-coupled with primary nitroalkanes via deaminative pathway to give nitroalkene derivatives in good to excellent yields. Secondary and tertiary amines were inert to ortho-naphthoquinone catalysts; however, secondary nitroalkanes were readily converted by ortho-naphthoquinone catalysts to the corresponding nitrite
Nano CoFe<sub>2</sub>O<sub>4</sub> supported antimony(<scp>iii</scp>) as an efficient and recyclable catalyst for one-pot three-component synthesis of multisubstituted pyrroles
A novelmagnetic nano-CoFe2O4 supported Sb ([CoFe2O4@SiO2–DABCO–Sb]) was successfully constructed, which exhibited high catalytic activity for one-potthree-componentsynthesis of multisubstituted pyrroles in the reaction of amines, nitroolefin and 1,3-dicarbonyl compounds. The magneticheterogeneouscatalyst could be easily recovered using an external magnet and reused many times without significant
成功地构建了一种新型的磁性纳米CoFe 2 O 4负载的Sb([CoFe 2 O 4 @SiO 2 –DABCO-Sb]),该催化剂对多取代吡咯的一锅三组分合成具有很高的催化活性。胺,硝基烯烃和1,3-二羰基化合物。磁性非均相催化剂可以使用外部磁体容易地回收,并且可以多次重复使用而不会显着降低催化活性。
1,3-disubstituted 4-methyl-1H-pyrrole-2-carboxamides and their use in medicaments
申请人:Gruenenthal GmbH
公开号:US07968591B2
公开(公告)日:2011-06-28
1,3-disubstituted 4-methyl-1H-pyrrole-2-carboxamides corresponding to formula I
methods for their production, pharmaceutical compositions containing them, and the use thereof for noradrenalin receptor regulation, particularly for inhibiting noradrenalin reuptake, and/or for 5-HT receptor regulation, particularly for inhibiting 5-hydroxy tryptophan reuptake, and/or for opioid receptor regulation and/or for batrachotoxin (BTX) receptor regulation and/or for treating or inhibiting pain and other conditions.
1,3-Disubstituted 4-methyl-1H-pyrrole-2-carboxamides and their Use in Medicaments
申请人:Oberboersch Stefan
公开号:US20090137573A1
公开(公告)日:2009-05-28
1,3-disubstituted 4-methyl-1H-pyrrole-2-carboxamides corresponding to formula I
methods for their production, pharmaceutical compositions containing them, and the use thereof for noradrenalin receptor regulation, particularly for inhibiting noradrenalin reuptake, and/or for 5-HT receptor regulation, particularly for inhibiting 5-hydroxy tryptophan reuptake, and/or for opioid receptor regulation and/or for batrachotoxin (BTX) receptor regulation and/or for treating or inhibiting pain and other conditions.
Ambiphilic Dual Activation Role of a Task-Specific Ionic Liquid: 2-Hydroxyethylammonium Formate as a Recyclable Promoter and Medium for the Green Synthesis of β-Nitrostyrenes
作者:Abdolhamid Alizadeh、Mohammad M. Khodaei、Ali Eshghi
DOI:10.1021/jo101696z
日期:2010.12.3
A cost-effective task-specific ionic liquid, 2-hydroxyethyl ammonium formate, efficiently promotes the condensation of nitroalkanes with various aldehydes to produce beta-nitrostyrenes in high to excellent yields at room temperature. This reaction does not involve any hazardous organic solvent and toxic catalyst. The ionic liquid is recovered and recycled for subsequent reactions. In addition, a novel mechanism has been proposed invoking ambiphilic dual activation influence of the ionic liquid.