Transition-metal-free insertion of benzyl bromides into 2-(1H-benzo[d]imidazol-1-yl)benzaldehyde: One-pot switchable syntheses of benzo[4,5]imidazo[1,2-a]quinolin-5(7H)-ones and 3-arylquinolin-4-ones mediated by base
transition-metal-free insertion of benzyl group between aldehyde and imidazole of 2-(1H-benzo[d]imidazol-1-yl)benzaldehyde was achieved for the first time. Two diverse sets of quinolin-4-one derivatives: benzo[4,5]imidazo[1,2-a]quinolin-5(7H)-ones (2) and 3-arylquinolin-4-ones (3) were synthesized based on identical starting materials 2-(1H-benzo[d]imidazol-1-yl)benzaldehydes (1) and benzyl bromides. In the preparations
首次实现了2-(1 H-苯并[ d ]咪唑-1-基)苯甲醛在醛和咪唑之间的无过渡金属苄基插入。合成了两组不同的喹啉-4-酮衍生物:苯并[4,5]咪唑并[1,2 - a ]喹啉-5(7 H)-酮(2)和3-芳基喹啉-4-酮(3)。基于相同的起始原料2-(1 H-苯并[ d ]咪唑-1-基)苯甲醛(1)和苄基溴。在准备工作中,两个关键的中间体I和II 涉及并可能通过布雷斯洛内中间体与苄基溴的反应在存在碱的情况下通过烯醇攻击或在不存在碱的情况下通过基于NHC的烯胺攻击原位合成,其中布雷斯洛内通过遵循两种新的不同途径,该中间体可能起亲核试剂的作用。
Palladium(II) 9,10-phenanthrenequinone N-substituted thiosemicarbazone/semicarbazone complexes as efficient catalysts for N-arylation of imidazole
catalytic efficiency of the synthesized complexes was examined against N-arylation of imidazole. The system works well with the electron-rich, -neutral, and -deficient aryl halides to afford the products in good to excellent yields. Sterically congested aryl halides and heteroaryl halides have also been used as substrates to provide N-arylated heterocycles. In addition, this methodology can be applicable
[EN] BICYCLIC COMPOUNDS HAVING ACTIVITY AT THE CXCR4 RECEPTOR<br/>[FR] COMPOSÉS BICYCLIQUES AYANT UNE ACTIVITÉ SUR LE RÉCEPTEUR CXCR4
申请人:ALLERGAN INC
公开号:WO2009143058A1
公开(公告)日:2009-11-26
A compound represented by the structural formula (I): Therapeutic methods, compositions, and medicaments related thereto are also disclosed.
由结构式(I)表示的化合物:还公开了相关的治疗方法、组合物和药物。
Regioselective Synthesis of Diversely Substituted Diazoninones Through a Post-Ugi Gold-Catalyzed Intramolecular Hydroarylation Process
作者:Zhenghua Li、Amit Kumar、Dipak D. Vachhani、Sunil K. Sharma、Virinder S. Parmar、Erik V. Van der Eycken
DOI:10.1002/ejoc.201301507
日期:2014.4
A highly efficient approach for the regioselective construction of fused nine-membered rings (diazoninone framework) was developed by employing sequential Ugi and gold-catalyzed intramolecular hydroarylation reactions. The scope of this intramolecular cyclization has been demonstrated.
通过采用连续的 Ugi 和金催化的分子内加氢芳基化反应,开发了一种用于区域选择性构建稠合九元环(重氮酮骨架)的高效方法。已经证明了这种分子内环化的范围。