Category: Triazoles

Synthetic Route of 41253-21-8, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 41253-21-8, name is Sodium 1,2,4-triazol-1-ide, 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.

[Step 1] Synthesis of ethyl 2-methyl-2-(1H-1,2,4-triazol-1-yl)propanoate: At room temperature, cesium carbonate (5.0 g, 15 mmol) and sodium 1,2,4-triazol-1-ide (0.58 g, 6.2 mmol) were added to a solution of ethyl 2-bromo-2-methylpropanoate (1.0 g, 5.1 mmol) in DMF (25 mL). The resulting reaction solution was stirred at 50C for 24 hours, and then concentrated under reduced pressure. Water was added to the obtained crude product, and extraction with chloroform was carried out. The organic layer was dried over anhydrous sodium sulfate, and then concentrated under reduced pressure, followed by purifying the obtained crude product by silica gel column chromatography (eluent, hexane:ethyl acetate = 7:3 ? 4:6), to obtain 0.84 g (89%) of ethyl 2-methyl-2-(1H-1,2,4-triazol-1-yl)propanoate (hereinafter referred to as Reference Example Compound 40).

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; Toray Industries, Inc.; NISHIMURA, Yutaka; KATO, Yuko; HAYASHI, Shinnosuke; YAMAZAKI, Aiko; YAMAMOTO, Masashi; ASAOKA, Yoshiji; YAMADA, Masateru; YAMADA, Naohiro; EP2832724; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

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. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Formula: C2HBr2N3

General procedure: A mixture of salt 1a (1 g, 2.9 mmol), 3,5-dibromo-1,2,4-triazole (0.66 g, 2.9 mmol), and K2CO3 (1.20 g, 8.7 mmol) in DMF (10 ml) was refluxed for 2 h. The mixture was cooled and poured into water (50 ml). The precipitate formed was filtered off and recrystallized from DMF.

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

Reference:
Article; Osyanin; Osipov; Klimochkin, Yu. N.; Chemistry of Heterocyclic Compounds; vol. 47; 12; (2012); p. 1607 – 1609; Khim. Geterotsikl. Soedin.; vol. 47; 12; (2011); p. 1914 – 1916,3;,
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. 7343-33-1, name is 5-Bromo-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 5-Bromo-1H-1,2,4-triazole

Example 6 Preparation of 3-bromo-1-(4-(trifluoromethoxy)Phenyl)-1H-1,2,4-triazole A dry round bottom flask was charged with 3-bromo-1H-1,2,4-triazole (5 g, 33.8 mmol), CuI (0.644 g, 3.38 mmol), and Cs2CO3 (11.01 g, 33.8 mmol). The flask was evacuated/backfilled with N2, then DMSO (33.8 mL) and 1-iodo-4-(trifluoromethoxy)benzene (4.87 g, 16.90 mmol) were added. The reaction mixture was heated to 100° C. for 36 h. The reaction mixture was cooled to RT, diluted with EtOAc, filtered through a plug of Celite® and further washed with EtOAc. Water was added to the combined organics, and the layers were separated. The aqueous phase was neutralized to pH 7, and further extracted with EtOAc. The combined organics were concentrated in vacuo. Purification via flash column chromatography (EtOAc/Hexanes) yielded the title compound as an off white solid (3.78 g, 73percent): mp 67-69° C.; 1H NMR (400 MHz, CDCl3) delta 8.43 (s, 1H), 7.70 (m, 2H), 7.38 (m, 2H); 19F NMR (376 MHz, CDCl3) delta -58.02.

If you are hungry for even more, make sure to check my other article about 7343-33-1, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Dow AgroSciences LLC; GIAMPIETRO, Natalie C.; CREEMER, Lawrence C.; US2014/275504; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

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. HPLC of Formula: C2H4N4

2.6 g (0.15 mol)4-aminotriazole and 13.5 g (0.05 mol)4,4′-dicyanodiphenylmethane (compound 4), 250 ml of acetonitrile was added and the temperature was refluxed for 24 h, Drop to room temperature, precipitate solid, filter, the resulting solid dissolved in 120ml of water, Add 12ml concentrated hydrochloric acid, stirring and dissolving. 5.0 g of sodium nitrite was dissolved in 40 ml of water and then added dropwise to the above reaction solution at 0-5 C. After dripping, the reaction temperature was allowed to react at 0-5 C for 6 h, Reaction end, dropping ammonia water adjusted pH = 7, The filter cake was washed with water and dried to give 12.6 g of the final product compound 5 (letrozole) in 88.7% yield.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 584-13-4, and we look forward to future research findings.

Reference:
Patent; Zhejiang University of Technology; ZHANG, Xingxian; LI, Pengcheng; Qi, Weipeng; ZHOU, Xinyu; ZHOU, Jinjin; (9 pag.)CN105801501; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic. 6818-99-1, name is 3-Chloro-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 3-Chloro-1,2,4-triazole

2 – (6 – chloro – 3 – ethanesulfonyl – pyridin – 2 – yl) – 3 – methyl – 6 – trifluoromethyl – 3 H – imidazo [4,5 – b] pyridine500 mg,60% sodium hydride (oil) 60 mg, And 2.5 mL of N, N-dimethylformamide,Under ice-cooling, 141 mg of 3-chloro-1H-1,2,4-triazole was added. After stirring for 2.5 hours under ice cooling,Saturated multilayer aqueous solution was added to the reaction mixture,And extracted with ethyl acetate.The organic layer was washed with water,And washed with saturated brine,And dried over anhydrous sodium sulfate.The obtained organic layer was dried under reduced pressure.The obtained residue was subjected to silica gel chromatography,The books described below435 mg of compound 2 was obtained.

In conclusion, we affirm that quantitative kinetic descriptions of catalytic behavior continue to serve as an indispensable tool to navigate research efforts intended to model. Read on for other articles about 6818-99-1.

Reference:
Patent; SUMITOMO CHEMICAL COMPANY LIMITED; NISHIGUCHI, NAONOBU; SUNAMURA, EIRIKI; (25 pag.)JP2017/52702; (2017); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 584-13-4, 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, 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.

Into a mixture of 78.75 mmol of 4-amino-1,2,4-triazole and 50 mmol of monochlorotriterpenoneAdd 150ml of acetonitrile and 50mmol of sodium tert-butoxide, and heat to 60C for 5h. Qualitative analysis, the content of monochlorotrifluoroacetone ?After 1 wt%, the temperature of the system was lowered to room temperature, and solids gradually precipitated. After the solids were completely precipitated, they were suction-filtered and the solids obtained by suction filtration were collected.Rinse with tetrahydrofuran to obtain 3,3-dimethyl-1-(1H-1,2,4-triazolium-1-yl)butan-2-one chloride as a solid sulfonium salt.10.5g, yield 96%;

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

Reference:
Patent; Jiangsu Jianpai Agrochemical Co., Ltd.; Liu Zhiyong; Sun Yaquan; Liu Hui; Li Ming; (10 pag.)CN107118167; (2017); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 7343-33-1, 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, 7343-33-1, name is 5-Bromo-1H-1,2,4-triazole, molecular formula is C2H2BrN3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

To a mixture of the intermediate 5 300 mg, potassium carbonate 133 mg and N,N-dimethylformamide 3 mL was added 3-bromo-1H-1,2,4-triazole 132 mg at 0°C. The mixtures were stirred at 0°C for 2.5 hours and to the reaction mixture was added saturated aqueous sodium hydrogen carbonate solution and extracted with ethyl acetate. The organic layers were washed with water and brine and dried over anhydrous sodium sulfate. The resulting organic layers were concentrated under reduced pressure. The resulting residues were subjected to a silica gel column chromatography to give the following present compound 3 370 mg. H1-NMR (CDCl3) delta: 9.04 (1H, s), 8.81 (1H, br s), 8.73 (1H, d), 8.35 (1H, br s), 8.26 (1H, d), 3.92 (3H, s), 3.81 (2H, q), 1.39 (3H, t).

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 5-Bromo-1H-1,2,4-triazole, hurry up and to see.

Reference:
Patent; Sumitomo Chemical Company, Limited; TANABE, Takamasa; MIZUNO, Hajime; OKAMOTO, Hiroshi; (41 pag.)US2017/135348; (2017); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 41253-21-8, 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, 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.

5-Fluoro-2-(lH-l,2,4-triazol-l~yl)benzonitrile. A suspension of 2,5- diflurobenzonitrile (4.5 g, 32.35 mmol) and 1,2,4-triazole sodium salt (3.6 g, 40 mmol) in dimethylformamide (40 mL) was heated at 80 0C for 15 h. The reaction mixture was then cooled, diluted with CH2Cl2 (200 mL), washed with water (3 X 30 mL) and brine (30 mL), then dried (Na2SO4), filtered and concentrated to give a white solid which was purified by flash column chromatography (SiO2) using 1 : 1 to 3:1 ethyl acetate/Hexanes to afford the title compound (2.98 g, 49% yield) as a white powder. 1H NMR (500 MHz, CDCl3) delta: 8.70 (IH, s), 8.18 (IH, s), 7.76 (IH, dd, J = 9.0, 4.8 Hz), 7.55 (IH, dd, J = 7.3, 2.8 Hz), 7.51-7.47 (IH, m). LCMS (M+H) calcd for C9H6FN4: 189.17; found: 189.10.

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 Sodium 1,2,4-triazol-1-ide, hurry up and to see.

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; WO2007/64316; (2007); A1;,
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.16227-12-6, name is 4-Phenyl-4H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 16227-12-6

EXAMPLE 130 4-phenyl-1-(undec-1-yl)triazolium bromide 0.15 g (0.001 mol) 4-phenyltriazole 1 and 0.486 g (0.003 mol) 1-bromoheptane 2 are combined in a pressure tube. The mixture is stirred for 12 h at 110 C. Subsequently, it is cooled down on room temperature. The precipitated solid is taken up in a 1:1 mixture of THF and petroleum ether, is filtered off, and washed with diethylether. M 380.37 C15H22N3Br Yield: 0.242 g (64%) 1H-NMR DM-230 (300 MHz/DMSO): (ppm)=0.88 (t, 3H, 13-H); 1.37 (m, 8H, 9/10/11/12H); 1.96 (q, 2H, 8-H); 4.44 (t, 2H, 7-H); 7.69 (m, 3H, 5/5’/6H); 7.85 (d, 2H, 4/4′-H); 9.81 (s, 1H, 2-H); 10.85 (s, 1H, 1-H) 13C-NMR DM-230 (75.475 MHz/DMSO):

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

Reference:
Patent; TECHNISCHE UNIVERSITAET DRESDEN; US2011/105761; (2011); A1;,
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. 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

EXAMPLE 11 A mixture of ethyl 1,2,4-triazole-3-carboxylate (1.41 g, 0.01 mole) and beta-D-ribofuranosyl-1,2,3,5-tetraacetate (3.18 g, 0.01 mole) was melted and then 0.095 g of p-toluenesulfonic acid was added thereto. The reaction mixture was reacted for 3 hours, while maintaining the temperature of the reaction mixture at 95+-5 C. And then, the reaction mixture was crystallized with 20 ml of methanol to give 3.27 g of 1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1,2,4-triazole-3-carboxylic acid ethyl ester (yield: 82%). NMR (CDCl3) delta (ppm): 1.43(t, 3H), 2.12(t, 9H), 4.00(m, 2H), 4.26(m, 1H), 4.48(m, 2H), 5.57(t, 1H), 5.77(q, 1H), 6.10(d, 1H), 8.50(s, 1H)

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 64922-04-9

Reference:
Patent; Lee, Tai-Au; Park, Nam-Jin; Khoo, Ja-Heouk; Lee, Byung-Cheol; US2003/120064; (2003); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics