22774-67-0Relevant academic research and scientific papers
One-pot, two-step synthesis of 7-methylene-1,5-piperazine-fused 1,2,3-triazoles
Kuang, Lu,Ming, Peng,Wan, Chang-Feng,Chen, Jun-Min,Sheng, Shou-Ri
, p. 563 - 569 (2020/11/19)
A facile, one-pot two-step synthesis of 7-methylene-1,5-piperazine-fused 1,2,3-triazole derivatives has been developed. The protocol employs an N-allylation of N-propargylated amines with 2,3-dibromopropene in the presence of K2CO3 in DMSO and a CuI-catalyzed [3 + 2] cycloaddition reaction of the synthetic N-(2-bromoallyl)-N-propargyl amines with sodium azide sequentially. Such a method provides methylene-substituted 1,2,3-triazole fused piperazines with some advantages such as simple operation, high efficiency and good product yield (80–91%) through readily available starting materials.
Synthesis and biological evaluation of coumarin-linked 4-anilinomethyl-1,2,3-triazoles as potent inhibitors of carbonic anhydrases ix and xiii involved in tumorigenesis
Thacker, Pavitra S.,Tiwari, Prerna L.,Angeli, Andrea,Srikanth, Danaboina,Swain, Baijayantimala,Arifuddin, Mohammed,Supuran, Claudiu T.
, (2021/04/22)
A series of coumarin-linked 4-anilinomethyl-1,2,3-triazoles (6a–t) was synthesized via a molecular hybridization approach, through carbon C-6 of the coumarin moiety. The synthesized compounds were evaluated for their inhibition of carbonic anhydrase (CA)
Stereoselective Synthesis of Hexahydroimidazo[1,2- a]quinolines via SN2-Type Ring-Opening Hydroarylation-Hydroamination Cascade Cyclization of Activated Aziridines with N-Propargylanilines
Bhattacharyya, Aditya,Chauhan, Navya,Ghorai, Manas K.,Pradhan, Sajan,Shahi, Chandan K.
supporting information, p. 7903 - 7908 (2020/11/02)
A novel synthetic approach for the construction of 1,2,3,3a,4,5-hexahydroimidazo[1,2-a]quinolines in good yields (up to 75%) with excellent stereoselectivity (dr up to 94:6, ee up to >99%) under one-pot domino ring-opening cyclization (DROC) conditions ha
Highly Efficient Conversion of Propargylic Amines and CO2 Catalyzed by Noble-Metal-Free [Zn116] Nanocages
Cao, Chun-Shuai,Cheng, Peng,He, Liang-Nian,Shi, Ying,Song, Zhen-Jun,Xia, Shu-Mei,Xu, Hang,Zhao, Bin
supporting information, p. 8586 - 8593 (2020/03/26)
The reaction of propargylic amines and CO2 can provide high-value-added chemical products. However, most of catalysts in such reactions employ noble metals to obtain high yield, and it is important to seek eco-friendly noble-metal-free MOFs catalysts. Here, a giant and lantern-like [Zn116] nanocage in zinc-tetrazole 3D framework [Zn22(Trz)8(OH)12(H2O)9?8 H2O]n Trz=(C4N12O)4? (1) was obtained and structurally characterized. It consists of six [Zn14O21] clusters and eight [Zn4O4] clusters. To our knowledge, this is the highest-nuclearity nanocages constructed by Zn-clusters as building blocks to date. Importantly, catalytic investigations reveal that 1 can efficiently catalyze the cycloaddition of propargylic amines with CO2, exclusively affording various 2-oxazolidinones under mild conditions. It is the first eco-friendly noble-metal-free MOFs catalyst for the cyclization of propargylic amines with CO2. DFT calculations uncover that ZnII ions can efficiently activate both C≡C bonds of propargylic amines and CO2 by coordination interaction. NMR and FTIR spectroscopy further prove that Zn-clusters play an important role in activating C≡C bonds of propargylic amines. Furthermore, the electronic properties of related reactants, intermediates and products can help to understand the basic reaction mechanism and crucial role of catalyst 1.
Zinc(ii)-catalyzed intramolecular hydroarylation-redox cross-dehydrogenative coupling of N -propargylanilines with diverse carbon pronucleophiles: Facile access to functionalized tetrahydroquinolines
Li, Guangzhe,Wang, Chengdong,Li, Yueqing,Shao, Kun,Yu, Guo,Wang, Shisheng,Guo, Xiuhan,Zhao, Weijie,Nakamura, Hiroyuki
supporting information, p. 7333 - 7336 (2020/07/23)
Zinc(ii)-catalyzed intramolecular hydroarylation-redox cross-dehydrogenative coupling of N-propargylanilines with two types of carbon pronucleophiles (nitromethane as a sp3 carbon pronucleophile and phenylacetylenes as sp carbon pronucleophiles) proceeded to give the 2-substituted tetrahydroquinolines in good yields with 100percent atomic utilization without any additional external oxidants.
Synthesis and Activity of 1,2,3-Triazole Aminopyrimidines against Cyanobacteria as PDHc-E1 Competitive Inhibitors
Zhou, Yuan,Feng, Jiangtao,Feng, Lingling,Xie, Dan,Peng, Hao,Cai, Meng,He, Hongwu
, p. 12538 - 12546 (2019/11/13)
Cyanobacteria harmful algal blooms are of global concern, but all currently available algicides in the market are nonselective and have potential side effects on nontarget species. In the present work, two series of compounds (4 and 6) comprising 16 novel
Stereospecific Ring Opening and Cycloisomerization of Aziridines with Propargylamines: Synthesis of Functionalized Piperazines and Tetrahydropyrazines
Das, Bijay Ketan,Pradhan, Sourav,Punniyamurthy, Tharmalingam
supporting information, p. 4444 - 4448 (2018/08/07)
Stereospecific Cu-catalyzed nucleophilic ring opening of N-sulfonylaziridines with propargylamines and subsequent hydroamination afford piperazines, which leads to double-bond isomerization to furnish tetrahydropyrazines. Optically active aziridines can be cross-coupled with high enantiomeric purities (>98% ee).
One-pot preparation of pyrrole derivatives via the copper-catalyzed [4+1] annulation of propargylic amines with ethyl glyoxylate and phenylglyoxal in the presence of piperidine
Sakai, Norio,Suzuki, Hiroki,Hori, Hiroaki,Ogiwara, Yohei
supporting information, p. 63 - 66 (2016/12/23)
We describe how copper(II) chloride efficiently catalyzes the [4+1] annulation of propargylamines with either ethyl glyoxylate or phenylglyoxal functioning as a C1 unit, in the presence of piperidine, which leads to a straightforward and one-pot preparati
Synthesis of new 1,2,3-triazole linked benzimidazole molecules as anti-proliferative agents
Sahay, Ishani I.,Ghalsasi, Prasanna S.
supporting information, p. 825 - 834 (2017/04/06)
One pot click chemistry is used to link triazole and benzimidazole pharmacophore to get N-((1-((1H-benzo[d]imidazol-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl)aniline and its derivatives. Flexible linkages in the form of –CH2–R or –O–R/–N–R were designed during synthesis. All the newly synthesized compounds were characterized by FT-IR and NMR spectroscopy as well as high-resolution mass spectrometry. Selected compounds were screened for in vitro anti-proliferative activity using National Cancer Institute (NCI)-60 human tumor cell line screening program. The most potent structure N-((1-((1H-benzo[d]imidazol-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl)-4-chloroaniline 7e showed 40% growth inhibition in renal cancer cell line (UO-31) at 10 μM concentration.
Synthesis of 2-Indolyltetrahydroquinolines by Zinc(II)-Catalyzed Intramolecular Hydroarylation-Redox Cross-Dehydrogenative Coupling of N-Propargylanilines with Indoles
Li, Guangzhe,Nakamura, Hiroyuki
supporting information, p. 6758 - 6761 (2016/06/09)
An intramolecular hydroarylation-redox cross-dehydrogenative coupling (CDC) of propargylic anilines with indoles proceeded in the presence of zinc(II) catalysts to give 2-indolyltetrahydroquinolines in good to high yields. Three C-H bonds (two sp2and one sp3) are activated in one shot and these hydrogen atoms are trapped by a propargylic triple bond in the molecule.
