Month: April 2022

Safety of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Optimization and study on the synthesis of fluconazole. Author is Wu, Chunli; Li, Xing; Shi, Xiufang; Shi, Yuntao; Wang, Minglin.

An improved process for the preparation of fluconazole is described. 1,3-Difluorobenzene underwent Friedel-Crafts acetylation with chloroacetyl chloride without solvent to give 2,4-difluorophenylacetyl chloride in 98% yield. This chloride was substituted with 1H-1,2,4-triazole in refluxing toluene in the presence of sodium bicarbonate, leading to 1-(2,4-difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone in 71% yield. Finally, one-pot Corey-Chaykovsky reaction of the carbonyl with Me3SOI followed by ring-opening with 1H-1,2,4-triazole to afford fluconazole in 76% yield.

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

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9 ) is researched.Recommanded Product: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone.Wan, Kun; Fang, Bo; Wang, Guang Zhou; Zhou, Cheng He published the article 《2-Bromo-2-(5-bromo-1H-1,2,4-triazol-1-yl)-1-(2,4-difluorophenyl)ethanone》 about this compound( cas:86404-63-9 ) in Acta Crystallographica, Section E: Structure Reports Online. Keywords: bromo bromotriazolyl difluorophenylethanone crystal structure; mol structure bromobromotriazolyl difluorophenylethanone; weak hydrogen bond bromobromotriazolyldifluorophenylethanone. Let’s learn more about this compound (cas:86404-63-9).

In the title compound, C10H5Br2F2N3O, the mean planes of the benzene and triazole rings form a dihedral angle of 84.86 (2)°. In the crystal structure, weak intermol. C-H…O hydrogen bonds link mols. into extended chains propagating along the c axis. Crystallog. data are given.

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

SDS of cas: 86404-63-9. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Method development and validation study for quantitative determination of genotoxic impurity and its precursor in fluconazole sample by liquid chromatography-tandem mass spectrometry. Author is Rao, K. L. Narasimha; Devanna, N.; Reddy, K. V. N. Suresh.

Objective: The objective of this work is method development and validation study for quant. determination of 1-[2-(2,4-difluorophenyl)-2,3-epoxypropyl]-1H-1,2,4-triazole, a genotoxic impurity and its precursor in a fluconazole drug sample by liquid chromatog.-tandem mass spectrometry. Methods: LC-MS/MS anal. of these impurities was performed on Hypersil BDS C18 (100 mm x 4.0 mm, 3 μm) column. 5 mmol ammonium acetate and acetonitrile in the ratio of 65:35 (volume/volume) was used as the mobile phase with a flow rate of 0.4 mL/min. The developed method was accomplished with a short run time of 10 min. Triple quadrupole mass detector coupled with pos. electrospray ionization was used for the quantification of genotoxic impurities in multiple reaction monitoring (MRM). Results: The method was validated as per International Conference on Harmonization (ICH) guidelines. The method was linear in the range of 0.30 μg/g to 11.37 μg/g for impurity A and 0.30 μg/g to 11.34 μg/g for impurity B with a correlation coefficient of 0.999. The accuracy of the method was in the range of 98.25 % to 100.53 % for both impurities. Conclusion: A specific, selective, highly sensitive and more accurate anal. method using LC-MS/MS coupled with pos. electrospray ionization has been developed for the quantification of genotoxic impurity (1-[2-(2,4-difluorophenyl)-2,3-epoxypropyl]-1H-1,2,4-triazole) and its precursor (1-(2,4-difluorophenyl)-2-[1,2,4]triazol-1-yl-ethanone) at 0.3 μg/g with respect to the 5.0 mg/mL of fluconazole.

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

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9 ) is researched.Name: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone.Patel, Pallav D.; Talele, Tanaji T.; Fronczek, Frank R. published the article 《Synthesis and crystallographic characterization of 1-((2-(2,4-difluorophenyl)oxiran-2-yl)methyl)-1H-1,2,4-triazole. A crucial intermediate for the synthesis of azole antifungal drugs》 about this compound( cas:86404-63-9 ) in Journal of Chemical Crystallography. Keywords: fluorophenacyl chloride substitution triazole; fluoroacetophenone triazole preparation epoxidation methylsulfoxonium iodide; fluorophenyl oxiranylmethyl triazole preparation mol crystal structure hydrogen bond. Let’s learn more about this compound (cas:86404-63-9).

Preparation of 1-((2-(2,4-difluorophenyl)oxiran-2-yl)methyl)-1H-1,2,4-triazole(I) was accomplished in two steps. 1H-1,2,4-triazole was reacted with 2,4-difluoro-α-chloroacetophenone in presence of K2CO3 in refluxing toluene to provide the compound 2,4-difluoro-α-(1H-1,2,4-triazol-2-yl)acetophenone (II). The compound II was treated with trimethylsulfoxonium iodide in aqueous NaOH and toluene to provide the title oxirane. The compound I, previously isolated as an oil, was crystallized from (DCM/MeOH) and characterized by X-ray crystallog.: triclinic, space group P – 1, a = 7.3225 (15), b = 7.5833 (15), c = 9.856 (2) Å, α = 91.908 (12), β = 100.824 (11), γ = 103.800 (11)°, V = 520.28 (18) Å3, Z = 2. This important intermediate I, normally an oil, was crystallized, and its crystal structure includes a stepped conformation with nearly parallel triazole and Ph rings. Lack of classical hydrogen-bond donors leads to packing dominated by weaker interactions, including C-H…N, C-H…F and F…F contacts.

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

Application In Synthesis of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Ethyl 2-{[7-fluoro-4-oxo-3-(1H-1,2,4-triazol-1-yl)-4H-thiochromen-2-yl]sulfanyl}acetate.

In the title compound, C15H12FN3O3S2, the two six-membered rings are essentially coplanar, their mean planes making a dihedral angle of 1.1 (2)°. The carbonyl C, the two attached non-fused C atoms and the S atom deviate from the plane of the benzene ring by -0.046 (5), -0.017 (5), 0.000 (6), 0.026 (4) Å, resp. The angle between the mean planes of the triazole ring and the sulfur heterocycle is 53.3 (1)°. In the crystal, intermol. C-H…O hydrogen bonds link the mols. in a stacked arrangement along the a axis. Crystallog. data are given.

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

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Design and synthesis of new fluconazole analogues, the main research direction is fluconazole analog triazole preparation antifungal; ketone propargyl bromide alkyne formaldehyde sodium azide mesylation; click reaction.SDS of cas: 86404-63-9.

We have synthesized new fluconazole analogs containing two different 1,2,3-triazole units in the side chain. The synthesis of new amide analogs using a variety of acids is also described. All the compounds showed very good antifungal activity. A hemolysis study of the most active compounds I and II showed that both compounds did not cause any hemolysis at the dilutions tested. These compounds did not exhibit any toxicity to L929 cells at MIC and lower concentrations In the docking study, the overall binding mode of I and II appeared to be reasonable and provided a good insight into the structural basis of inhibition of Candida albicans Cyp51 by these compounds

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

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Synthesis of novel substituted tetrazoles having antifungal activity, the main research direction is triazolylmethyl styrene oxide arylpiperazinylethyl tetrazole condensation; substituted tetrazole preparation antifungal.Recommanded Product: 86404-63-9.

In an effort to find potent antifungal agents, a variety of triazole derivatives with a 5-substituted tetrazole structure, e.g., I, were prepared and evaluated for antifungal activity against Candida spp., Cryptococcus neoformans, and Aspergillus spp. in vitro. The location of the Me group at the C-3 of of two of the series has been demonstrated to be a key structural element of antifungal potency.

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

HPLC of Formula: 3222-47-7. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 6-Methylnicotinic acid, is researched, Molecular C7H7NO2, CAS is 3222-47-7, about Rhodium-catalyzed ortho-Arylation of (Hetero)aromatic Acids. Author is Weber, Philip; Rank, Christian K.; Yalcinkaya, Enis; Dyga, Marco; van Lingen, Tim; Schmid, Rochus; Patureau, Frederic W.; Goossen, Lukas J..

Rhodium acetate effectively promotes the carboxylate-directed ortho-arylation of (hetero)aromatic carboxylic acids ArCOOH (Ar = 2-methylphenyl, 4-methoxythiophen-3-yl, 2-fluoropyridin-3-yl, etc.) with aryl bromides Ar1Br (Ar1 = 4-methylphenyl, 2-naphthyl, 2-methylpyridin-6-yl, etc.) yielded functionalized hetero/aryl carboxylic acids, e.g., I (X = H, Me) and its Me carboxylates. The main advantage of this phosphine-free, redox-neutral method arises from its efficiency in assembling biol. meaningful electron-rich arylpyridines, which are problematic substrates in known C-H arylations using Pd, Ru, and Ir catalysts.

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

Wang, Wenya; Sheng, Chunquan; Che, Xiaoying; Ji, Haitao; Cao, Yongbing; Miao, Zhenyuan; Yao, Jianzhong; Zhang, Wannian published the article 《Discovery of highly potent novel antifungal azoles by structure-based rational design》. Keywords: azole preparation lanosterol demethylase inhibitor antifungal SAR.They researched the compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9 ).Recommanded Product: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:86404-63-9) here.

On the basis of the active site of lanosterol 14α-demethylase from Candida albicans (CACYP51), a series of new azoles were designed and synthesized. All the new azoles show excellent in vitro activity against most of the tested pathogenic fungi, which represent a class of promising leads for the development of novel antifungal agents. The MIC80 value of compounds 8c, 8i and 8n against C. albicans is 0.001 μg/mL, indicating that these compounds are more potent than fluconazole, itraconazole and voriconazole. Flexible mol. docking was used to analyze the structure-activity relationships (SARs) of the compounds The designed compounds interact with CACYP51 through hydrophobic, van der Waals and hydrogen-bonding interactions.

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

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9 ) is researched.Safety of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone.Lebouvier, Nicolas; Giraud, Francis; Corbin, Typhanie; Na, Young Min; Le Baut, Guillaume; Marchand, Pascal; Le Borgne, Marc published the article 《Efficient microwave-assisted synthesis of 1-(1H-indol-1-yl)-2-phenyl-3-(1H-1,2,4-triazol-1-yl)propan-2-ols as antifungal agents》 about this compound( cas:86404-63-9 ) in Tetrahedron Letters. Keywords: indolyl triazolylpropanol preparation; chloroacetophenone triazole substitution microwave irradiation; triazolylacetophenone preparation epoxidation microwave irradiation; microwave irradiation substitution Corey Chaykovsky epoxidation mediator; aryl triazolylmethyl oxirane preparation indole ring opening. Let’s learn more about this compound (cas:86404-63-9).

Conazole antifungals, in the series of triazole alcs., e.g., I, have been synthesized by ring opening of corresponding oxiranes, e.g., II. These oxiranes were prepared in high yields by Corey-Chaykovsky reaction under microwave irradiation

There is still a lot of research devoted to this compound(SMILES：FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1)Safety of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, and with the development of science, more effects of this compound(86404-63-9) can be discovered.

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