1-(2-硝基苯基)-1-苯胺和4-((2-硝基苯基)氨基)苯甲酸甲酯在氯磺酰基异氰酸酯的作用下已转化为相应的尿素衍生物。来自前一反应的初始磺酰亚胺产物具有足够的稳定性,因此可以将其分离并表征为其二钠盐,并且此以及其他三种后续产物已通过 X 射线衍射表征。相应的中间尿素在氧化条件下通过霍夫曼重排转化为其肼衍生物。密度泛函理论已被用于检查霍夫曼重排的中间体和过渡态的性质。
A selenium‐catalyzed carbonylative reaction for the synthesis of 2‐benzimidazolones from 2‐nitroanilines has been developed. In this strategy, to avoid the usage of toxic CO gas, TFBen (benzene‐1,3,5‐triyl triformate) was used as a solid and stable CO precursor, and a variety of desired 2‐benzimidazolones were produced in moderate to excellent yields.
Decarboxylative <i>ipso</i>
Amination of Activated Benzoic Acids
作者:Martin Pichette Drapeau、Janet Bahri、Dominik Lichte、Lukas J. Gooßen
DOI:10.1002/anie.201812068
日期:2019.1.14
the ligand and either air or N‐methylmorpholine N‐oxide as the oxidant, electron‐deficient benzoic acids undergo oxidative decarboxylative coupling with unprotected amines. This operationally simple aniline synthesis is widely applicable with respect to the amine and gives good yields, even on multigram scale. The orthogonality of this reaction to other Pd‐catalyzedcross‐couplings allows the concise
Aminoalkylazole derivatives as histamine-3 antagonists
申请人:Wyeth LLC
公开号:US07803825B2
公开(公告)日:2010-09-28
The present invention provides a compound of formula Ia:
and the use thereof for the treatment of a central nervous system disorder related to or affected by the histamine-3 receptor.
本发明提供了一种Ia式化合物,并且其用于治疗与组胺-3受体相关或受其影响的中枢神经系统疾病。
US7803825B2
申请人:——
公开号:US7803825B2
公开(公告)日:2010-09-28
[EN] AMINOALKYLAZOLE DERIVATIVES AS HISTAMINE-3 ANTAGONISTS<br/>[FR] DÉRIVÉS D'AMINOALKYLAZOLE EN TANT QU'ANTAGONISTES D'HISTAMINE-3
申请人:WYETH CORP
公开号:WO2009012252A1
公开(公告)日:2009-01-22
The present invention provides a compound of formula (I) and the use thereof for the treatment of a central nervous system disorder related to or affected by the histamine-3 receptor.