Month: October 2022

《Periodic mesoporous organosilica nanoparticles with BOC group, towards HIFU responsive agents》 was written by Li, Hao; Gasco, Carolina; Delalande, Anthony; Charnay, Clarence; Raehm, Laurence; Midoux, Patrick; Pichon, Chantal; Pleixats, Roser; Durand, Jean-Olivier. Category: triazoles And the article was included in Molecules in 2020. The article conveys some information:

Periodic Mesoporous Organosilica Nanoparticles (PMONPs) are nanoparticles of high interest for nanomedicine applications. These nanoparticles are not composed of silica (SiO2). They belong to hybrid organic-inorganic systems. We considered using these nanoparticles for CO2 release as a contrast agent for High Intensity Focused Ultrasounds (HIFU). Three mols. (P1-P3) possessing two to four triethoxysilyl groups were synthesized through click chem. These mols. possess a tert-butoxycarbonyl (BOC) group whose cleavage in water at 90-100°C releases CO2. Bis(triethoxysilyl)ethylene E was mixed with the mols. Pn (or not for P3) at a proportion of 90/10 to 75/25, and the polymerization triggered by the sol-gel procedure led to PMONPs. PMONPs were characterized by different techniques, and nanorods of 200-300 nm were obtained. These nanorods were porous at a proportion of 90/10, but non-porous at 75/25. Alternatively, mols. P3 alone led to mesoporous nanoparticles of 100 nm diameter The BOC group was stable, but it was cleaved at pH 1 in boiling water. Mols. possessing a BOC group were successfully used for the preparation of nanoparticles for CO2 release. The BOC group was stable and we did not observe release of CO2 under HIFU at lysosomal pH of 5.5. The pH needed to be adjusted to 1 in boiling water to cleave the BOC group. Nevertheless, the concept is interesting for HIFU theranostic agents. In the experiment, the researchers used many compounds, for example, Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8Category: triazoles)

Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8) can stabilizes Cu(I) towards disproportionation and oxidation thus enhancing its catalytic effect in the azide-acetylene cycloaddition.Category: triazoles

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

In 2018,Vos, Rita; Rolin, Cedric; Rip, Jens; Conard, Thierry; Steylaerts, Tim; Cabanilles, Maria Vidal; Levrie, Karen; Jans, Karolien; Stakenborg, Tim published 《Chemical Vapor Deposition of Azidoalkylsilane Monolayer Films》.Langmuir published the findings.Application In Synthesis of Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine The information in the text is summarized as follows:

N3-functionalized monolayers on silicon wafer substrates are prepared via the controlled vapor-phase deposition of 11-azidoundecyltrimethoxysilanes at reduced pressure and elevated temperature The quality of the layer is assessed using contact angle, attenuated total reflectance IR spectra, and ellipsometry measurements. At 60 °C, longer deposition times are needed to achieve monolayers with similar N3 d. compared to depositions at 145 °C. The monolayers formed via the vapor phase are denser compared to those formed via a solvent-based deposition process. ATR-FTIR measurements confirm the incorporation of azido-alkyl chains in the monolayer and the formation of siloxane bridges with the underlying oxide at both deposition temperatures X-ray photon spectroscopy shows that the N3 group is oriented upward in the grafted layer. Finally, the d. was determined using total reflection X-ray fluorescence after a click reaction with chlorohexyne and amounts to 2.5 × 1014 N3 groups/cm2. In summary, our results demonstrate the formation of a uniform and reproducible N3-containing monolayer on silicon wafers, hereby providing a functional coating that enables click reactions at the substrate. In addition to this study using Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine, there are many other studies that have used Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8Application In Synthesis of Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine) was used in this study.

Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8) can stabilizes Cu(I) towards disproportionation and oxidation thus enhancing its catalytic effect in the azide-acetylene cycloaddition.Application In Synthesis of Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)aminePolytriazolylamines were synthesized by the copper(I)-catalyzed ligation of azides and alkynes.

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

《Molybdenum oxide-based metal-organic framework/polypyrrole nanocomposites for enhancing electrochemical detection of dopamine》 was written by Zhou, Kunfeng; Shen, Defeng; Li, Xiao; Chen, Yuhao; Hou, Liran; Zhang, Yishuai; Sha, Jingquan. Quality Control of 1H-1,2,3-Triazole And the article was included in Talanta in 2020. The article conveys some information:

To overcome the poor conductivities and promote the application in the biosensors of metal-organic frameworks (MOFs), a simple approach was employed to improve their overall conductivity by adjusting the metal centers of MOFs and coating conductive polypyrrole (PPy) in the work. An unprecedented molybdenum oxide-based three-dimensional MOFs with helical channels (CuTRZMoO4) was synthesized based on MoO-4, Cu2+ ions and 1,2,3-trz for the first time, then combined with PPy to fabricate hybrid composites (CuTRZMoO4@PPy-n) with both advantages. The CuTRZMoO4 modified glassy carbon electrode show high sensitivity for detecting the neurotransmitter dopamine (DA), and the CuTRZMoO4@PPy-2 modified glassy carbon electrode has the highest catalytic activity to DA with the linear detection range from 1μM to 100μM and the detection limit of 80 nM (S/N = 3) by differential pulse voltammetry (DPV). Moreover, the developed biosensor has good selectivity, reproducibility and stability. The concept behind the new architecture to modify electrodes should promote the further development of MOF-based biosensors. In the experiment, the researchers used 1H-1,2,3-Triazole(cas: 288-36-8Quality Control of 1H-1,2,3-Triazole)

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties Quality Control of 1H-1,2,3-Triazole

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Cui, Xue; Ma, Jianting; Zeng, Tingting; Xu, Junyu; Li, Youbin; Wang, Xuesong published their research in RSC Advances in 2021. The article was titled 《Metal-free cascade synthesis of unsymmetrical 2-aminopyrimidines from imidazolate enaminones》.Formula: C2H3N3 The article contains the following contents:

A convenient metal-free synthesis of unsym. 2-aminopyrimidines I [R1 = cyclopropyl, Ph, 4-MeC6H4, etc.; R2 = Ph, 4-ClC6H4, 4-MeOC6H4, etc.] from imidazolate enaminones had been developed. In this procedure, various structural 2-aminopyrimidines I, as well as 4,5-dihydroisoxazol-5-ols and pyrazoles were synthesized in moderate to excellent yields. A plausible mechanism was also proposed for the cascade reaction. This method represented an effective strategy toward the synthesis of unsym. 2-aminopyrimidines I. In the part of experimental materials, we found many familiar compounds, such as 1H-1,2,3-Triazole(cas: 288-36-8Formula: C2H3N3)

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties Formula: C2H3N3

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Ma, Dong; Yin, Yang; Chen, Ying-Lu; Yan, Yi-Tao; Wu, Jun published an article in 2021. The article was titled 《Design, step-economical diversity-oriented synthesis of an N-heterocyclic library containing a pyrimidine moiety: discovery of novel potential herbicidal agents》, and you may find the article in RSC Advances.Application of 288-36-8 The information in the text is summarized as follows:

The step-economical diversity-oriented synthesis of a library of various pyrimidine-N-heterocycle hybrids I [R = 1H-imidazol-1-yl, 1H-1,2,3-triazol-1-yl, 1-methyl-1H-indol-3-yl, etc.] and II [R1 = 5-Me, 4-Cl, 5-Cl, 6-Cl] was developed, in which a 4,6-dimethoxypyrimidine core was incorporated into nine kinds of N-heterocycles. A total of 34 structurally diverse compounds I and II were synthesized via a two-step process from very simple and com. available starting materials. Further, in-vivo biol. screening of this library identified 11 active compounds I [R = 1H-imidazol-1-yl, 1H-1,2,3-triazol-1-yl, 2-(trifluoromethyl)-1H-1,3-benzodiazol-1-yl, 3-methyl-1H-indazol-1-yl, 5-methyl-1H-indazol-1-yl, 2,3,4,9-tetrahydro-1H-carbazol-9-yl, 1H-indol-3-yl, 4-chloro-1H-indol-3-yl, 5-chloro-1H-indol-3-yl, 7-chloro-1H-indol-3-yl] and II [R1 = 5-Cl] that exhibited good post-emergence herbicidal activity against D. sanguinalis at 750 g ai per ha. More importantly, pyrimidine-tetrahydrocarbazole hybrid I [R = 2,3,4,9-tetrahydro-1H-carbazol-9-yl] showed good to excellent herbicidal activity against five test weeds at the same dosage. Pyrimidine-tetrahydrocarbazole hybrids I [R = 9H-carbazol-9-yl, 2,3,4,9-tetrahydro-1H-carbazol-9-yl, 3-chloro-9H-carbazol-9-yl] represented a novel class of herbicidal agents that may become promising lead compounds in the herbicidal discovery process.1H-1,2,3-Triazole(cas: 288-36-8Application of 288-36-8) was used in this study.

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties Application of 288-36-8

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

In 2015,Fu, Ou; Pukin, Aliaksei V.; van Ufford, H. C. Quarles; Branson, Thomas R.; Thies-Weesie, Dominique M. E.; Turnbull, W. Bruce; Visser, Gerben M.; Pieters, Roland J. published 《Tetra- versus Pentavalent Inhibitors of Cholera Toxin》.ChemistryOpen published the findings.Category: triazoles The information in the text is summarized as follows:

The five B-subunits (CTB5) of the Vibrio cholerae (cholera) toxin can bind to the intestinal cell surface so the entire AB5 toxin can enter the cell. Simultaneous binding can occur on more than one of the monosialotetrahexosylganglioside (GM1) units present on the cell surface. Such simultaneous binding arising from the toxins’ multivalency is believed to enhance its affinity. Thus, blocking the initial attachment of the toxin to the cell surface using inhibitors with GM1 subunits has the potential to stop the disease. Previously we showed that tetravalent GM1 mols. were sub-nanomolar inhibitors of CTB5. In this study, we synthesized a pentavalent version and compared the binding and potency of penta- and tetravalent cholera toxin inhibitors, based on the same scaffold, for the first time. The pentavalent geometry did not yield major benefits over the tetravalent species, but it was still a strong inhibitor, and no major steric clashes occurred when binding the toxin. Thus, systems which can adopt more geometries, such as those described here, can be equally potent, and this may possibly be due to their ability to form higher-order structures or simply due to more statistical options for binding. The experimental part of the paper was very detailed, including the reaction process of ((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)(cas: 56602-33-6Category: triazoles)

((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)(cas: 56602-33-6) is used as a reagent for peptide coupling, lactonization, selective esterification, amidation of alfa amino acids without racemization and synthesis of magnolamide for antioxidative activity and catalyst for 9-acridinecaroboxamide derivative. It acts as a substitute for (Benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate (BOP) reagent.Category: triazoles

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

《Monopeptide-based powder gelators for instant phase-selective gelation of aprotic aromatics and for toxic dye removal》 was written by Li, Zhongyan; Luo, Ziqing; Zhou, Jialing; Ye, Zecong; Ou, Guang-chuan; Huo, Yanping; Yuan, Lin; Zeng, Huaqiang. Electric Literature of C12H22F6N6OP2 And the article was included in Langmuir in 2020. The article conveys some information:

Through a combinatorial screening of 35 possible phase-selective monopeptide-based organogelators readily made at low cost, we identified five of them with high gelling ability toward aprotic aromatic solvents in the powder form. The best of them (Fmoc-V-6) is able to instantly and phase-selectively gel benzene, toluene, and xylenes in the presence of water at room temperature at a gelator loading of 6% w/v. This enables the gelled aromatics to be separated by filtration and both aromatics and the gelling material to be recycled by distillation We also identified Fmoc-I-16 as the best gelator for benzyl alc., and the corresponding organogel efficiently removes toxic dye mols. by 82-99% from their highly concentrated aqueous solutions These efficient removals of toxic organic solvents and dyes from water suggest their promising applications in remediating contaminated water resources. In the experimental materials used by the author, we found ((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)(cas: 56602-33-6Electric Literature of C12H22F6N6OP2)

((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)tris(dimethylamino)phosphonium hexafluorophosphate(V)(cas: 56602-33-6) is used as a reagent for peptide coupling, lactonization, selective esterification, amidation of alfa amino acids without racemization and synthesis of magnolamide for antioxidative activity and catalyst for 9-acridinecaroboxamide derivative. It acts as a substitute for (Benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate (BOP) reagent.Electric Literature of C12H22F6N6OP2

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Category: triazolesIn 2020 ,《Graphite-like polyoxometalate-based metal-organic framework as an efficient anode for lithium ion batteries》 appeared in CrystEngComm. The author of the article were Yang, Xiya; Zhu, Peipei; Ma, Xiaoliang; Li, Wenjing; Tan, Zenglong; Sha, Jingquan. The article conveys some information:

A new polyoxometalate (POM) pillared metal-organic framework (POMOF), [Cu24(Trz)16(H2O)Cl4(HPMo12O40)] (Cu-POM, Trz = 1,2,3-triazole), was synthesized and characterized. Crystal anal. reveals that the Keggin POMs are inserted into copper-triazole layers with a graphite-like structure generating a POM-supported porous three-dimensional framework. Owing to the combination of the multi-electron redox property of POM units and the open porous framework, Cu-POM can be utilized as an anode material for lithium ion batteries (LIBs), and exhibits a reversible capacity of 525 mA h g-1 at a c.d. of 100 mA g-1 after 100 cycles. Moreover, to illustrate lithium storage, the impedance spectra of compound Cu-POM during the first and 100th charge process have also been studied. The study of Cu-POM in this work might guide the development of POM-based electrode materials for LIBs. The experimental part of the paper was very detailed, including the reaction process of 1H-1,2,3-Triazole(cas: 288-36-8Category: triazoles)

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties Category: triazoles

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 1H-1,2,3-TriazoleIn 2020 ,《Visible-Light Photoredox Catalyzed C-N Coupling of Quinoxaline-2(1H)-ones with Azoles without External Photosensitizer》 appeared in ChemCatChem. The author of the article were Sun, Mingli; Wang, Lei; Zhao, Lulu; Wang, Zhiming; Li, Pinhua. The article conveys some information:

A visible-light photoredox catalyzed C-N coupling of quinoxaline-2(1H)-ones with azoles in the absence of external photosensitizer was developed. The protocol employed com. available pyrazoles and triazoles as amination reagents and showed wide substrate scope, providing the corresponding C3-position amination products in good yields and high regioselectivity under ambient conditions. Investigations indicated that the starting materials and products can act as photosensitizers avoiding use of addnl. photocatalyst in an autocatalytic manner. In addition, 1O2 coexists with O2·- from mol. oxygen (3O2) via an energy transfer (ET) and single electron transfer (SET) process during the reaction. After reading the article, we found that the author used 1H-1,2,3-Triazole(cas: 288-36-8Reference of 1H-1,2,3-Triazole)

1H-1,2,3-Triazole(cas: 288-36-8) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties Reference of 1H-1,2,3-Triazole

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Kluge, R.; Schulz, M.; Liebsch, S. published an article on February 19 ,1996. The article was titled 《Diastereoselective Epoxidation of Olefins by Organo Sulfonic Peracids. II》, and you may find the article in Tetrahedron.Name: 3-Nitro-1-tosyl-1H-1,2,4-triazole The information in the text is summarized as follows:

The behavior of sulfonic peracids (generated in situ) toward olefins, allylic alcs., homoallylic alcs., and α,β-unsaturated ketones was studied. For example, 4-methylbenzenesulfonoperoxoic acid was generated in situ from 1-(4-methylphenylsulfonyl)-1H-imidazole and trimethyloxonium tetrafluoroborate. Epoxidation of α-pinene with 4-methylbenzenesulfonoperoxoic acid gave 2α,3α-epoxypinane. Generally, the epoxidation proceeds in a peracid-like manner with greater diastereoselectivity than those by common oxidants. In particular, the epoxidation of Δ4 3-ketosteroids gave 4α,5α-epoxides with good diastereoselectivity. Enhanced α-selectivity was also found in the epoxidation of a cholesterol derivative The results came from multiple reactions, including the reaction of 3-Nitro-1-tosyl-1H-1,2,4-triazole(cas: 77451-51-5Name: 3-Nitro-1-tosyl-1H-1,2,4-triazole)

3-Nitro-1-tosyl-1H-1,2,4-triazole(cas: 77451-51-5) belongs to triazoles. Triazoles are an important group of nitrogen-containing five-membered heterocyclic scaffolds. Triazoles are core structures of several drugs and pharmaceutical agents. Triazole derivatives possess antimicrobial, antiparasitic, antidiabetic, analgesic, and anti-inflammatory properties Name: 3-Nitro-1-tosyl-1H-1,2,4-triazole

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics