通过哌啶催化的2-氨基苯并咪唑,芳香族醛和1,3-二酮在异丙醇水溶液中的三组分反应实现苯并咪唑并[2,1 - b ]喹唑啉-1(1 H)-的超声辅助合成。在我们确定了一锅反应中不寻常的反应中间体之后,首先怀疑了这种机制。前所未有的偶联反应,它涉及2-氨基苯并咪唑对原位生成的迈克尔加合物的亲核攻击,然后发生电环形成反应。与普遍接受的机理相反,2-氨基苯并咪唑与Knoevenagel加合物的直接反应不能释放目标化合物。
通过哌啶催化的2-氨基苯并咪唑,芳香族醛和1,3-二酮在异丙醇水溶液中的三组分反应实现苯并咪唑并[2,1 - b ]喹唑啉-1(1 H)-的超声辅助合成。在我们确定了一锅反应中不寻常的反应中间体之后,首先怀疑了这种机制。前所未有的偶联反应,它涉及2-氨基苯并咪唑对原位生成的迈克尔加合物的亲核攻击,然后发生电环形成反应。与普遍接受的机理相反,2-氨基苯并咪唑与Knoevenagel加合物的直接反应不能释放目标化合物。
Skeletally Diverse Synthesis of Innovative [2,1-<i>c</i>]-1,4-Oxazepine and [1,4]-Quinoxaline Systems
作者:Chia-Hsin Lee、Wen-Chun Wu、Prasad S. Dangate、Li-Ching Shen、Wen-Sheng Chung、Chung-Ming Sun
DOI:10.1021/acscombsci.5b00093
日期:2015.10.12
embodied pyrimido-pyrrolo motifs was established. Initially, the pyrrole ring was installed using microwave irradiation through an intramolecular base-catalyzed cyclization between acetyl bromomethyl pyrimidine dione and o-amino phenyl methanol or o-phenylenediamine methylbenzoates. Furthermore, oxazepine, and quinoxaline scaffolds were constructed by an acid-catalyzed condensation with a variety of aldehydes
建立了一种高效,创新的[2,1- c ] -1、4-氧杂氮杂和[1,4]-喹喔啉杂环以及具体的嘧啶基-吡咯基基序的合成方法。最初,通过微波辐射通过乙酰溴甲基嘧啶二酮和邻氨基苯甲醇或邻苯二胺甲基苯甲酸酯之间的分子内碱催化的环化作用来安装吡咯环。此外,通过非常规的Pictet-Spengler反应策略,通过酸催化与多种醛的缩合反应构建了奥沙平和喹喔啉骨架。这项工作的重要方面是建立具有潜在医学价值的新型杂环系统。
Multistep divergent synthesis of benzimidazole linked benzoxazole/benzothiazole via copper catalyzed domino annulation
作者:Jen-Yu Liao、Manikandan Selvaraju、Chih-Hau Chen、Chung-Ming Sun
DOI:10.1039/c3ob27177c
日期:——
An efficient, facile synthesis of structurally diverse benzimidazole integrated benzoxazole and benzothiazoles has been developed. In a multi-step synthetic sequence, 4-fluoro-3-nitrobenzoic acid was converted into benzimidazole bis-heterocycles, via the intermediacy of benzimidazole linked ortho-chloro amines. The amphiphilic reactivity of this intermediate was designed to achieve the title compounds
Copper catalyzed aerobic oxidative cyclization and ketonization: one pot synthesis of benzoimidazo[1,2-a]imidazolones
作者:Manikandan Selvaraju、Tzuen-Yang Ye、Chia-Hsin Li、Pei-Heng Ho、Chung-Ming Sun
DOI:10.1039/c6cc01828a
日期:——
A highly efficientsynthesis of benzoimidazo[1,2-a]imidazolone through a novel oxidative 5-exo-dig cyclization-ketonization cascade of 2-aminobenzimidazole, aldehyde and terminalalkyne has been explored underaerobicconditions.
在有氧条件下,通过2-氨基苯并咪唑,醛和末端炔的新型5 - exo -dig环化-酮化级联反应,高效合成了苯并咪唑并[1,2- a ]咪唑酮。
[EN] NOVEL SUBSTITUTED BENZIMIDAZOLE DERIVATIVES AS D-AMINO ACID OXIDASE (DAAO) INHIBITORS<br/>[FR] NOUVEAUX DÉRIVÉS DE BENZIMIDAZOLE SUBSTITUÉS UTILISÉS EN TANT QU'INHIBITEURS DE LA D-AMINO-ACIDE OXYDASE (DAAO)
申请人:TSENG YUFENG JANE
公开号:WO2018053161A1
公开(公告)日:2018-03-22
The present invention provides novel substituted benzimidazole derivatives used as DAAO inhibitors and for treatment and/or prevention of neurological disorders.
本发明提供了一种新型的取代苯并咪唑衍生物,用作DAAO抑制剂,用于治疗和/或预防神经系统疾病。
Microwave-Assisted Synthesis of Benzimidazole-Linked Indoline and Indole Hybrids from C-2 Linked (<i>o</i>
-Aminobenzyl)benzimidazoles
作者:Yun-Ta Lee、Feng-Yu Chiu、Indrajeet J. Barve、Chung-Ming Sun
DOI:10.1002/adsc.201701140
日期:2018.2.1
An efficient and novel synthesis of benzimidazole‐linked indoline hybrids via an unconventional Pictet‐Spengler‐type condensation of C‐2 linked (o‐aminobenzyl)benzimidazoles with aldehydes and ketones under microwave irradiation has been explored. The key condensation step consists of acid‐catalyzed imine generation followed by intramolecular C–C bond formation through unique reactivity of the benzimidazole