Triazoles

New discoveries in chemical research and development in 2021. As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world.118863-62-0, name is 3-(4-Bromophenyl)-1H-[1,2,4]triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 3-(4-Bromophenyl)-1H-[1,2,4]triazole

Example 15 Preparation of 3-(4-bromophenyl)-1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazole (C7) 3-(4-Bromophenyl)-1H-1,2,4-triazole (C6) (10.9 g, 48.5 mmol), copper(I) iodide (2.38 g, 12.5 mmol), and cesium carbonate (30.3 g, 93.0 mmol) in a round-bottomed flask was flushed with nitrogen. Dimethylsulfoxide (85 mL) was added, followed by 1-iodo-4-(trifluoromethoxy)benzene (13.2 g, 45.8 mmol). The reaction was degassed for 5 minutes, then heated at 100 C. for 3 days. The reaction was cooled to room temperature, diluted with ethyl acetate, and filtered through a plug of Celite rinsing with ethyl acetate. To the filtrate was added saturated ammonium chloride and stirred for 1.5 hours. The layers were separated and the aqueous layer was extracted with ethyl acetate (3*). The combined organic layers were dried over magnesium sulfate, filtered, and concentrated onto Celite. Purification by flash column chromatography using 0-40% EtOAc/hexanes as eluent provided the title compound as an off-white solid (9.65 g, 52%): mp 109-112 C.; 1H NMR (400 MHz, CDCl3) delta 8.56 (s, 1H), 8.10-8.03 (m, 2H), 7.83-7.75 (m, 2H), 7.64-7.57 (m, 2H), 7.42-7.35 (m, 2H); ESIMS m/z 386 ([M+2H]+).

We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 3-(4-Bromophenyl)-1H-[1,2,4]triazole ,and how the biochemistry of the body works.

Reference:
Patent; DOW AGROSCIENCES LLC; Fischer, Lindsey G.; Crouse, Gary D.; Sparks, Thomas C.; Goldsmith, Miriam E.; (77 pag.)US2016/24026; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 4928-88-5, New Advances in Chemical Research in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 4928-88-5, name is Methyl 1H-1,2,4-triazole-3-carboxylate, molecular formula is C4H5N3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Example 3A Methyl 1-(2,3,5-Tri-O-acetyl-beta-L-ribofuranosyl)-1,2,4-triazole-3-carboxylate (20) A mixture of methyl 1,2,4-triazole-3-carboxylate (0.64 g, 5 mmol), 1,2,3,5-tetra-O-acetyl-beta-L-ribofuranose (2) (1.5 g, 4.72 mmol) and bis(p-nitrophenyl)-phosphate (20 mg) were placed in a pear shaped flask and placed in a preheated oil bath at (160-165° C.). The flask was connected to a water aspirator and kept at 160-165° C. (oil bath temperature) under reduced pressure with stirring for 25 min. The reaction mixture was removed, cooled and diluted with EtOAc (150 mL) and sat. NaHCO3 (100 mL). The product was extracted in EtOAc. The organic extract was washed with water (100 mL) and brine (50 mL), dried and evaporated to dryness. The residue that obtained was purified by flash column of silica gel using CHCl3 –>EtOAc as the eluent. The pure fractions were collected and evaporated to dryness to give 1.2 g (66percent) of pure product: 1 H NMR (CDCl3) delta 2.10 (3s, 9H, 3 COCH3), 3.98 (s, 3H, OCH3), 4.22 (m, 1H), 4.46 (m, 2H), 5.54 (t, 1H), 5.76 (m, 1H), 6.04 (d, 1H, C1′,), and 8.38 (s, 1H, C3 H). Anal. Calc. for C15 H19 N3 O9 (385.22): C, 46.75; H, 4.97; N,10.91. Found: C, 46.82; H, 4.57; N=10.71.

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Reference:
Patent; ICN Pharmaceuticals, Inc.; US6130326; (2000); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 1001401-62-2, New Advances in Chemical Research in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic,A common heterocyclic compound, 1001401-62-2, name is 2-(2H-1,2,3-Triazol-2-yl)benzoic acid, molecular formula is C9H7N3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

A solution of (3S,6R)-6-methylpiperidin-3-ol (5.06 g, 43.9 mmol), 2-(2H-1,2,3- triazol-2-yl)benzoic acid (9.97 g, 52.7 mmol), 1-hydroxy-7-azabenzotriazole (11.96 g, 88.0 mmol), and EDC (16.84 g, 88.0 mmol) in DMF (293 mL) and Hunig?s Base (18.37 ml, 132mmol) was heated at 50 C overnight, then diluted with saturated, aqueous NaHCO3 and water and extracted 3x with EtOAc. The organics were washed with brine, dried over Mg504, filtered, and concentrated. The crude material was partially purified by silica gel gradient chromatography (0-100% ethyl acetate in hexanes), providing the titled compound as a faint orange solid. LRMS mlz (M+H) 287.3 found, 287.1 required.

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Reference:
Patent; MERCK SHARP & DOHME CORP.; KUDUK, Scott, D.; SKUDLAREK, Jason, W.; WO2014/66196; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 584-13-4, New Advances in Chemical Research in 2021. Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 584-13-4, name is 4H-1,2,4-Triazol-4-amine, molecular formula is C2H4N4, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

An EtOH solution of 4-amino-1,2,4-triazole (1.26 g, 15 mmol) and 2-pyridinecarboxaldehyde (1.61 g, 15 mmol) was refluxed for 3 h, a large amount of precipitate of the ligand L was filtered off after cooling and dried under vacuum. Yield 80%, 2.08 g. Anal. Calcd. (%) for C8H7N5: C, 55.49; H, 4.04; N, 40.46. Found: C, 55.53; H, 3.97; N, 40.40. IR (cm-1, KBr pellet): 3094 (s), 1617 (w), 1587 (m), 1503 (s), 1475 (s), 1439 (m), 1392 (w), 1315 (w), 1287 (m), 1223 (m), 1173 (s), 1093 (w), 1058 (s), 995 (m), 982 (w), 964 (w), 939 (w), 869 (m), 781 (s), 760 (w), 743 (m), 622 (s), 521 (m), 505 (w).

The potential utility of systematic synthetic strategy will be applicable to efficient generations of chemical libraries of compounds to find ‘hit’ molecules.Read on for other articles about 4H-1,2,4-Triazol-4-amine, hurry up and to see.

Reference:
Article; Dang, Dong-Bin; Li, Meng-Meng; Bai, Yan; Zhou, Rui-Min; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy; vol. 103; (2013); p. 101 – 107;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 7411-23-6, New Advances in Chemical Research in 2021.In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole, molecular formula is C2HBr2N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Into a 250-mL round-bottom flask, was placed 3,5-dibromo-lH-l,2,4-triazole (5 g, 22.04 mmol, 1.00 equiv) in N,N-dimethylformamide (25 mL) and potassium carbonate (9 g, 65.12 mmol, 3.00 equiv). This was followed by the addition of SEMC1 (4.43 g, 26.53 mmol, 1.20 equiv) dropwise with stirring at 0 C. The resulting mixture was stirred overnight at 25 C. The resulting solution was diluted with 100 mL of EA, washed with 5 x 100 mL of saturated brine and concentrated. The residue was applied onto a silica gel column and eluted with ethyl acetate/petroleum ether (1/10). This resulted in 7.26 g (92%) of 3,5-dibromo-l-((2- (trimethylsilyl)ethoxy)methyl)-lH-l,2,4-triazole as yellow oil. MS (ES, m/z) [M+H]+: 356, 358, 360.

The potential utility of systematic synthetic strategy will be applicable to efficient generations of chemical libraries of compounds to find ‘hit’ molecules.Read on for other articles about 3,5-Dibromo-1H-1,2,4-triazole, hurry up and to see.

Reference:
Patent; THE ROCKEFELLER UNIVERSITY; BRESLOW, Jan L.; PONDA, Manish P.; SELNICK, Harold; EGBERTSON, Melissa; (61 pag.)WO2017/123518; (2017); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 1455-77-2, name is 3,5-Diamino-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. SDS of cas: 1455-77-2

2-acetylthiophene (8.20 g) and N,N-dimethylformamide diethyl acetal (13.6 mL) were heated to reflux at 130°C in xylene (13 mL) for two days. The reaction liquid was concentrated under reduced pressure, and after subjected to azeotropic distillation with toluene, crystallized with a mixed solvent of toluene-hexane and 3-dimethylamino-1-thiophen-2-ylpropenone (11.52g, yield 98percent) was obtained. The obtained 3-dimethylamino-1-thiophen-2-ylpropenone (10.78 g) was dissolve in toluene (160 mL) and stirred at 100°C with 3,5-diamino-1,2,4-triazole (14.15 g) added. After 10-camphor sulfonic acid (13.82 g) was added, it was heated to reflux for 1.5 hours. After having cooled to room temperature, the supernatant was removed (decantation). The residue was suspended and washed with 5percent sodium carbonate/10percent ethanol aqueous solution, 10percent ethanol water, absolute ethanol and methylene chloride in this order and dried under reduced pressure and the title compound was obtained (8.55 g, yield 66percent).

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 3,5-Diamino-1,2,4-triazole, in my other articles.

Reference:
Patent; NIPPON KAYAKU KABUSHIKI KAISHA; EP1674454; (2006); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 7170-01-6, New Advances in Chemical Research in 2021.In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. 7170-01-6, name is 3-Methyl-1H-1,2,4-triazole, molecular formula is C3H5N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Intermediate 1075-(3-Methyl-[i ,2,4ltriazol-i -yl)-ryrazine-2-carboxylic acid: A mixture of methyl 5-chloropyrazine-2-carboxylate (0.75 g), K2003 (1 .8 g) and 3- methyl-i H-i ,2,4-triazole(i .2 g) in N,N-dimethylformamide (6 mL) is heated to 100C overnight. Analysis of the crude mixture by LCMS shows saponified product. The product is acidified with 1 N hydrochloric acid and the precipitate is filtered andwashed with water and diethyl ether to afford the title compound. LC (method 20): tR = 1 .21 mm; Mass spectrum (APCI): m/z = 206 [M+H]

We very much hope you enjoy reading the articles and that you will join us to present your own research about 7170-01-6, Happy reading!

Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; NEUROCRINE BIOSCIENCES, INC.; NOSSE, Bernd; ECKHARDT, Matthias; HIMMELSBACH, Frank; LANGKOPF, Elke; ASHWEEK, Neil J.; HARRIOTT, Nicole; WO2014/19967; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 41253-21-8, New Advances in Chemical Research in 2021. The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis. 41253-21-8, name is Sodium 1,2,4-triazol-1-ide, molecular formula is C2H2N3Na, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

1-2. Preparation of 1-(3-chloropropyl)-1,2,4-triazole (compound of formula 3) A 1,2,4-triazole sodium salt (5g, 54.91mmol) was dissolved in dimethylformamide (50mL) and the solution was cooled to 0. Then, sodium hydride (60%, 2.86g, 71.38mmol) was added thereto, followed by stirring for 30 minutes. 1-bromo-3-chloropropane (6.5mL, 65.89mmol) was added thereto, followed by stirring at room temperature for 12 hours, and the reaction was terminated with the addition of an ammonium chloride saturated solution. After extraction with ethyl acetate and water, the organic layer was washed with brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The resulting residue was purified by column chromatography to afford the title compound (2.77g, 35%).1H NMR (CDCl3, 400MHz): delta 8.08 (s, 1H), 7.94 (s, 1H), 4.36 (t, J =6.4Hz, 2H), 3.45 (t, J =6Hz, 2H), 2.35-2.30 (m, 2H).

In the meantime we’ve collected together some recent articles in this area about Sodium 1,2,4-triazol-1-ide to whet your appetite. Happy reading!

Reference:
Patent; DONG-A PHARM.CO., LTD.; KIM, Soon-Hoe; IM, Weon-Bin; CHOI, Sung-Hak; CHOI, Sun-Ho; SOHN, Ju-Hee; SUNG, Hyun-Jung; KIM, Mi-Yeon; CHO, Kang-Hun; SOHN, Tae-Kyoung; WO2011/132901; (2011); A2;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 6818-99-1, New Advances in Chemical Research in 2021. As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 6818-99-1, name is 3-Chloro-1,2,4-triazole, molecular formula is C2H2ClN3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Example 20[6-(3-Chloro-[1,2,4]triazol-1-yl)-3-methyl-5-(3-trifluoromethyl-phenyl)-pyridin-2-yl]-(4-pyrrolidin-1-yl-piperidin-1-yl)-methanone; A well stirred solution of 0.17 g (1.59 mmol) of 3-chloro-1H-[1,2,4]triazole in 1.0 ml of 1-methyl-pyrrolidin-2-one was treated at RT with 0.058 g (1.32 mmol) of a sodium hydride (55% in mineral oil). After 30 min, 0.20 g (0.44 mmol) of [6-chloro-3-methyl-5-(3-trifluoromethyl-phenyl)-pyridin-2-yl]-(4-pyrrolidin-1-yl-piperidin-1-yl)-methanone (example 3) was added and the reaction mixture was heated up to 150 C. After 24 hours, it was poured into crashed ice and extracted twice with EtOAc; the organic phases were washed with water, dried over magnesium sulfate, filtered and evaporated. The residue was purified by flash column chromatography (CH2Cl2/MeOH 1:0 to 95:5) to give 0.11 g (48%) of the title compound as yellow oil. MS: 519.3 (MH+, 1Cl).

Therefore, this conceptually novel strategy might open impressive avenues to establish green and sustainable chemistry platforms.In my other articles, you can also check out more blogs about 3-Chloro-1,2,4-triazole.

Reference:
Patent; Adam, Jean-Michel; Aebi, Johannes; Binggeli, Alferd; Green, Luke; Hartmann, Guido; Maerki, Hans P.; Mattei, Patrizio; Ricklin, Fabienne; Roche, Olivier; US2009/318467; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 288-36-8, name is 1H-1,2,3-Triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 288-36-8

To a solution of 1H-1, 2, 3-triazole (10 g, 145 mmol) in anhydrous THF (150 mL) was added powder K2CO3(40.0g, 290 mmol) , then iodomethane (32.29 g, 227 mmol) was added dropwise at 30 . After the addition was complete, the mixture was stirred at 30 for 16 h. The reaction mixture was filtered and the filtrate was concentrated to afford the product as an oil.1H-NMR: (DMSO-d6400MHz) delta 8.06 (s, 1H) , 7.71 (s, 1H) , 4.05 (s, 3H)

If you are hungry for even more, make sure to check my other article about 288-36-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; MERCK SHARP & DOHME CORP.; ARASAPPAN, Ashok; BUNGARD, Christopher James; FRIE, Jessica L.; HAN, Yongxin; HOYT, Scott B.; MANLEY, Peter J.; MEISSNER, Robert S.; PERKINS, James; SEBHAT, Iyassu K.; WILKENING, Robert R.; (140 pag.)WO2016/29454; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics