A Biphilic Phosphetane Catalyzes N–N Bond-Forming Cadogan Heterocyclization via P<sup>III</sup>/P<sup>V</sup>═O Redox Cycling
作者:Trevor V. Nykaza、Tyler S. Harrison、Avipsa Ghosh、Rachel A. Putnik、Alexander T. Radosevich
DOI:10.1021/jacs.7b03260
日期:2017.5.24
chemoselective catalytic synthesis of 2H-indazoles, 2H-benzotriazoles, and related fused heterocyclic systems with good functional group compatibility. On the basis of both stoichiometric and catalytic mechanistic experiments, the reaction is proposed to proceed via catalytic PIII/PV═O cycling, where DFT modeling suggests a turnover-limiting (3+1) cheletropic addition between the phosphetane catalyst and nitroarene
Direct Acyl Radical Addition to 2<i>H</i>-Indazoles Using Ag-Catalyzed Decarboxylative Cross-Coupling of α-Keto Acids
作者:Ganganna Bogonda、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acs.orglett.8b00920
日期:2018.5.4
A direct acyl radical addition to 2H-indazoles has been achieved for the first time, where the less-aromatic quinonoid 2H-indazoles readily accepted radical species to the C-3 position. Motivated by the lack of direct acylation strategy for 2H-indazoles, the current method utilizes the radical acceptability of 2H-indazoles, discovering an ambient temperature reaction to provide facile access to a diverse
Novel Imidazo[4,5-c]Quinoline And Imidazo[4,5-c][1,5]Naphthyridine Derivatives As LRRK2 Inhibitors
申请人:Pfizer Inc.
公开号:US20170073343A1
公开(公告)日:2017-03-16
The present invention provides novel imidazo[4,5-c]quinoline and imidazo[4,5-c][1,5]naphthyridine derivatives of Formula (I), and the pharmaceutically acceptable salts thereof
wherein R
1
, R
1a
, R
1b
, R
2
, R
4
, R
5
, R
6
, X and Z are as defined in the specification. The invention is also directed to pharmaceutical compositions comprising the compounds of Formula (I) and to use of the compounds in the treatment of diseases associated with LRRK2, such as neurodegenerative diseases including Parkinson's disease or Alzheimer's disease, cancer, Crohn's disease or leprosy.
Silica‐supported Cu(II)–quinoline complex: Efficient and recyclable nanocatalyst for one‐pot synthesis of benzimidazolquinoline derivatives and 2
<i>H</i>
‐indazoles
作者:Hashem Sharghi、Mahdi Aberi、Pezhman Shiri
DOI:10.1002/aoc.4974
日期:2019.7
The synthesis, characterization and catalytic activity of a Cu(II) complex derived from 2‐oxoquinoline‐3‐carbaldehyde Schiff base supported on amino‐functionalized silica are reported. 3‐(1H‐Benzo[d]imidazol‐2‐yl)quinolines containing piperidine, morpholine and phenylpiperazine skeletons at the C‐2 position were formed in good to excellent yields via the one‐pot reaction of 2‐chloroquinoline‐3‐carbaldehyde
报道了由氨基官能化二氧化硅负载的2-氧代喹啉-3-甲醛甲醛席夫碱衍生的Cu(II)配合物的合成,表征和催化活性。通过2-氯喹啉-3-的一锅反应,形成了在C-2位置含有哌啶,吗啉和苯基哌嗪骨架的3-(1 H-苯并[ d ]咪唑-2-基)喹啉。在温和条件下,在纳米催化剂存在下,甲醛,苯1,2-二胺和仲胺。此外,发现纳米催化剂可循环使用多达七次,而活性没有明显损失。另外,通过2-溴苯甲醛,叠氮化钠和伯胺的催化缩合反应,合成了一系列2 H-吲唑。
A facile synthesis of 2H-indazoles under neat conditions and further transformation into aza-γ-carboline alkaloid analogues in a tandem one-pot fashion
作者:Shinde Vidyacharan、A. Sagar、N. C. Chaitra、Duddu S. Sharada
DOI:10.1039/c4ra06838f
日期:——
We have described a facile, microwave-assisted, catalyst-free and solvent-free approach to 2H-indazoles and further developed a robust tandem one-pot metal-free strategy for CâC bond formation at the C-3 position of 2H-indazoles leading to a unique class of aza-γ-carboline alkaloid analogues. This straightforward expedient synthesis constitutes an interesting alternative to the existing conventional transition metal catalyzed reactions.