Category: Triazoles

Research speed reading in 2021. In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. 584-13-4, name is 4H-1,2,4-Triazol-4-amine belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Formula: C2H4N4

1.071 g of analytically pure dipyridinecarboxaldehyde and 0.841 g of analytically pure 4-amino-1,2,4-triazole, dissolved in 30 mL of analytical ethanol solution and heated to reflux for two hours to give the Schiff base ligand pyta. Yield 1.71 g, yield 98%.

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 4H-1,2,4-Triazol-4-amine, in my other articles.

Reference:
Patent; Guilin University of Technology; Zhang, Shuhua; Zhang, Shaonan; (7 pag.)CN106496188; (2017); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 61-82-5, 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. 61-82-5, name is 1H-1,2,4-Triazol-5-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.

General procedure: To a mixture of dimedone (1 mmol), aldehyde (1 mmol), 2-aminobenzimidazole or 3-amino-1,2,4-triazole (1 mmol)and nano-SiO2 (15 mol %) in the acetonitrile (5 mL) was stirred for appropriate time (Table 2) at 25-30 C. After the completion of the reaction as indicated by TLC, dichloromethane (CH2Cl2) was added to the solidified mixture and the insoluble catalyst was separated by filtration. Evaporation of the solvent from the filtrate and recrystallization of the solid residue from hot ethanol afforded the pure products in high yields.

Future efforts will undeniably focus on the diversification of the new catalytic transformations. These may comprise an expansion of the substrate scope from aromatic and heteroaromatic compounds to other hydrocarbons. Keep reading other articles of 61-82-5.

Reference:
Article; Mousavi, Mir Rasul; Maghsoodlou, Malek Taher; Journal of the Iranian Chemical Society; vol. 12; 5; (2015); p. 743 – 749;,
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. 64922-04-9, name is Ethyl 1H-1,2,4-triazole-5-carboxylate belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Computed Properties of C5H7N3O2

A solution of 613 mg (14.0 mmol) of sodium hydride in 10 ml of 1-methyl-2-pyrrolidinone is cooled to 0 – 5C and treated dropwise with a solution of 1.74 g (12.4 mmol) of 1H-[1,2,4]triazole-3-carboxylic acid ethyl ester in 10 ml of 1-methyl-2-pyrrolidinone over 8 minutes. The mixture is stirred for 1 hour at 0 – 5C and a solution of 3.00 g (11.2 mmol) of 5-fluoro-2-nitro-4-trifluoromethyl-benzoic acid methyl ester in 10 ml of 1-methyl-2-pyrrolidinone is added. The mixture is allowed to warm slowly to room temperature and stirred for 18 hours under N2. It is poured into water and extracted with ethyl acetate. The organic phase is separated and dried over NaaSO^ filtered and concentrated in vacuo. The residue is purified by flash chromatography (SiO2, hexane / ethyl acetate 1:1) and the mixed fractions are recrystallized in toluene to provide overall 3.12 g (71 %) of 1-(5-methoxycarbonyl-4-nitro-2-trifluoromethyl-phenyl)-1H-[1,2,4]triazole-3-carboxylic acid ethyl ester, m.p. 190 – 192C.

If you are hungry for even more, make sure to check my other article about 64922-04-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; NOVARTIS AG; NOVARTIS PHARMA GMBH; WO2006/10591; (2006); A2;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 1455-77-2, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 1455-77-2, name is 3,5-Diamino-1,2,4-triazole, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

A mixture of Zn(NO3)2·6H2O (0.030 g, 0.1 mmol), H3btc (0.024 g, 0.1 mmol), Hdatrz (0.01 g, 0.10 mmol), NaHCO3 (0.025 g, 0.3 mmol) and H2O (10 mL) was placed in a 23 ml Teflon-lined stainless steel reactor under autogenous pressure at 160 °C for 60 h and then cooled to the room temperature slowly. Colorless prism crystals were obtained in 34percent yield based on Zn(NO3)26H2O. Anal. calcd. for C11H7N5O6Zn2 (436.00): C, 30.28; H, 1.61; N, 16.06percent. Found: C, 30.31; H, 1.58; N, 16.02percent. IR (KBr, cm?1) 3387(s), 3175(m), 1607(s), 1566(s), 1395(s), 1366(m), 1307(w), 1224(m), 1077(s), 853(w), 718(s), 688(m), 647(w).

The result showed that such a combination of chemo- and biocatalysis improved the catalytic yield more than two times compared with that of sole metal catalysis.I hope my blog about 3,5-Diamino-1,2,4-triazole is helpful to your research.

Reference:
Article; Cui, Penglei; Li, Xiaohui; Journal of Molecular Structure; vol. 1081; (2015); p. 182 – 186;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. 41253-21-8, name is Sodium 1,2,4-triazol-1-ide belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 41253-21-8

e) Preparation of 2,2′-[5-(1H-1,2,4-triazole-1-yl-methyl)-1,3-phenylene]di(2-methyl propionitrile) (1)A mixture of 2,2′-(5-bromomethyl-1,3-phenylene)di(2-methylpropionitrile) (V) (4 gm, 0.013 moles) and 1,2,4-triazole sodium salt (2.40 gm, 0.026 moles) in N,N-dimethylformamide (28 ml) was heated under stirring at 45-50 C. for 4 hour. The reaction mixture was cooled, poured into the ice-water and extracted with ethyl acetate. The ethyl acetate layer was separated and concentrated to give a residue. This residue was diluted with water, acidified with concentrated hydrochloric acid (adjusted the pH tol-2). The reaction mixture was heated at 50 C. and subsequently filtered the hot solution. The mother liquor was treated with ammonia solution at 0-5 C. (adjusted the pH to 8-9) and extracted with ethyl acetate. The ethyl acetate layer was separated and concentrated to obtain a residue (3.0 g).f) Purification of Anastrozole by Column Chromatography and CrystallizationThis residue was purified through column chromatography by using silica gel column and ethylacetate-hexane (740 ml: 950 ml) as eluent. The solid (2.0 g) obtained was recrystallized using a mixture of acetone-water (12 ml: 20 ml) or ethylacetate-hexane mixture (9 ml to 18 ml) to obtain 2,2′-[5-(1H-1,2,4-triazole-1-ylmethyl)-1,3-phenylene]di(2-methyl propionitrile) (1). [Yield: 34.0%, purity, 99.9%].

The catalyzed pathway has a lower Ea, but the net change in energy that results from the reaction is not affected by the presence of a catalyst. In my other articles, you can also check out more blogs about 41253-21-8

Reference:
Patent; Radhakrishnan, Tarur Venkatasubramanian; Baban, Bhise Nandu; Govind, Sathe Dhananjay; Janardan, Chaudhari Chhayendra; Ashokkumar, Joshi Mehul; US2008/207915; (2008); 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. 7170-01-6, name is 3-Methyl-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 7170-01-6

The 5-chloro-6-methyl-pyrazolo [1,5-a] pyrimidine-3-carboxylic acid butyl 3rd (607 mg) for N, N- dimethyl formamide (39.8 ml) is added a solution of 4-methyl -1H-1, 2, 3-triazole (208 mg) and potassium carbonate (378 mg). The reaction mixture is stirred at room temperature for 2 hours, to be added, and the mixture is extracted with ethyl acetate. Extract water and saturated salt water cleaning, drying with anhydrous sodium sulfate, and the evaporation of the solvent under reduced pressure. Aid hemostasis by silica gel column chromatography purification (hexane/ethyl acetate), in order to produce the title compound (167 mg).

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-Methyl-1H-1,2,4-triazole, in my other articles.

Reference:
Patent; TAKED A PHARMACEUTICAL COMPANY LIMITED; KAWASAKI, MASANORI; MIKAMI, SATOSHI; NAKAMURA, SHINJI; NEGORO, NOBUYUKI; IKEDA, SHUHEI; ASHIZAWA, TOMOKO; MARUI, SHOGO; TANIGUCHI, TAKAHIKO; (135 pag.)TW2016/520; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

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.16681-70-2, name is 1H-[1,2,3]Triazole-4-carboxylic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Product Details of 16681-70-2

[0635] Compound 1 (500 mg, 1.4 mmol) was combinedwith HATU (656 mg, 1.7 mmol), 3H-[1,2,3]triazole-4-carboxylicacid (195 mg, 1.7 mmol) and DMF (3 mL). DIPEA(803 f.LL, 4.6 mmol) was added and the mixture was stirred for30 minutes. Saturated aqueous NH4Cl (10 mL) and EtOAc(40 mL) were added. The organic layer was separated anddried over MgS04 . The solvent was evaporated and the residuepurified by normal phase chromatography (0-1 00%EtOAc/hexanes) to yield Compound 2 (650 mg).

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

Reference:
Patent; THERAVANCE BIOPHARMA R&D IP, LLC; Fleury, Melissa; Beausoliel, Anne-Marie; Hughes, Adam D.; Long, Daniel D.; Wilton, Donna A.A.; US2015/210690; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 16681-65-5, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 16681-65-5, name is 1-Methyl-1H-1,2,3-triazole, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

7.1 : 1 -Methyl-1 H-[1 ,2,3]triazole (1 .50 g; 17.150 mmol) was dissolved in dry THF (30.0 mL) under argon and cooled to -65 C. Butyllithium (2.5 M in hexane; 6.86 mL; 17.150 mmol) was added dropwise over a period of 10 min. The temperature was hold between -65 C and -60 C. A colorless suspension was formed, which was stirred at – 65 C for 1 h. 1 -Methyl-1 H- pyrazole-4-carbaldehyde (1 .89 g; 17.150 mmol), dissolved in dry THF (10.0 mL), was added dropwise at -65 C and the mixture stirred at – 65 C for 15 min. The reaction mixture was slowly warmed to 0 C within 1 .5 h and then quenched with methanol (10 ml_) and evaporated to dryness. The crude residue was dissolved in dry THF (50.0 ml_) and water (15.0 ml_). (0380) Manganese(IV) oxide (2.98 g; 34.299 mmol) was added, and the mixture was stirred at 80 C overnight. Manganese(IV) oxide (2.98 g; 34.299 mmol) was added and the mixture was stirred for further 24 h at 80 C. The mixture was filtered over kieselguhr. The residue was washed with dichloro- methane/methanol(30%). The combined filtrates were evaporated to an aqueous residue. A precipitate was formed, which was filtered by suction and washed with little water, acetonitrile and MTBE and dried under vacuum at 50 C for 1 h. The filtrate was diluted with water and extracted with ethyl acetate. The combined organic layers were washed with sodium sulfate, filtered by suction and evaporated to dryness. The solid residue was triturated with little acetonitrile, filtered by suction and washed with little acetonitrile and MTBE, and dried under vacuum at 50 C for 1 h. Yield: 2.38 g colorless solid; (0381) LC/MS, Rt: 1 .29 min; (M+H) 192.2

This is the end of this tutorial post, and I hope it has helped your research about 16681-65-5!

Reference:
Patent; MERCK PATENT GMBH; BUCHSTALLER, Hans-Peter; (101 pag.)WO2018/87021; (2018); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 1455-77-2, New Advances in Chemical Research in 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. 1455-77-2, name is 3,5-Diamino-1,2,4-triazole, molecular formula is C2H5N5, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Included at room temperature3,5-diamino-1,2,4-triazole 15.0 g (0.151 mol)And dehydrated N,N-dimethylformamide 100mLAdd 28percent to the suspensionSodium methoxide methanol solution 29.2g (0.151mol)After making a uniform solution and stirring for 30 minutes,30.1 g (0.151 mol) of 3-chloropropyltrimethoxydecane was added.Stir at 77~80 ° C for 4 hours.After cooling the suspension reaction solution to 3 ° C,Filter out insoluble matter,And the solvent of the filtrate is distilled off under reduced pressure,Obtained 35.7 g (0.137 mol, brown viscous,Yield 90.5percent).

I am very proud of our efforts over the past few months and hope to 3,5-Diamino-1,2,4-triazole help many people in the next few years.

Reference:
Patent; SHIKOKU CHEMICALS CORPORATION; MURAI,, TAKAYUKI; TANIOKA, MIYA; IIDA, SHUSAKU; KATSUMURA, MASATO; YAMAJI, NORIAKI; IMAMINE, TAKAHITO; TSUJINO, MASAHIKO; HIRAO, HIROHIKO; (52 pag.)TW2018/41929; (2018); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 288-36-8, New Advances in Chemical Research in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 288-36-8, name is 1H-1,2,3-Triazole, molecular formula is C2H3N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

To a solution of 0.87 g (8.4 mmol) of 2-chloroimidazole in 14 mL of DMF was added 0.40 g (10 mmol) of 60% NaH in mineral oil. After 20 min of stirring, 2.5 g (8.4 mmol) of 4-bromo-2-tert-butoxycarbonylamino-butyric acid methyl ester in 5 mL of DMF was added. The reaction mixture was heated to 80 C for 1 h. The mixture was diluted with EtOAc (150 mL), washed with water, brine, dried over MgSO4, filtered, and concentrated. The residue was purified by flash chromatography (0-5% MeOH in CH2C12) to provide 2.1 g (78%) of 2-tert-butoxycarbonylamino-4-1,2,3-triazol-2-yl- butyric acid methyl ester.

By the way, if you are interested in learning more fun chemistry with your kids, get your hands into one chemistry set now, and start enjoying the best part of chemistry: experiments about 1H-1,2,3-Triazole.

Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG; WO2009/70485; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics