Category: Triazoles

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. COA of Formula: C2H3N3

Intermediate G To a mixture of 2-bromo-4-fluorobenzoic acid (30 g, 137 mmol), cesium carbonate (89.26 g, 274 mmol), and copper(I) iodide (5.27 g, 27.4 mmol) in DMF (200 mL) were added N,N’-dimethylcyclohexane-l,2-diamine (3.7 mL,23.3 mmol) and lH-l,2,3-triazole (18.92 g, 274 mmol). The resulting mixture was stirred at 110 C overnight, cooled, concentrated in vacuo, and diluted with water (150 mL). The aqueous layer was extracted with EtOAc (300 mL x 3). The aqueous layer was acidified with 2 N HC1 and extracted with EtOAc (300 mL x 4). The combined organic layers were washed with brine (150 mL x 3), dried over Na2S04, filtered, and concentrated in vacuo. The residue was purified by silica gel column chromatography gel (petroleum ether : EtOAc = 100: 1 – 5 : 1) to provide the title compound as a solid. LRMS m/z (M+H) 208.0 found, 208.0 required.

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Reference:
Patent; MERCK SHARP & DOHME CORP.; KUDUK, Scott, D.; LIVERTON, Nigel; LUO, Yunfu; (85 pag.)WO2016/100156; (2016); A1;,
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. 4923-01-7, name is 5-Methyl-4H-1,2,4-triazol-3-amine belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 5-Methyl-4H-1,2,4-triazol-3-amine

A mixture of methyl 3-oxo-2-(4-(4-(trifluoromethoxy)phenyl)piperidin-1 -yl)butanoate (46A) (300 mg, 0.835 mmol) and 3-methyl-1 H-1 ,2,4-triazol-5-am ine (123 mg, 1 .252 mmol) in acetic acid (10 mL) was heated at 130 C for 2 h . Then reaction mixture was diluted with water (20 mL), adjusted to pH=6 by addition of saturated Na2C03 solution and extracted with EtOAc twice. Organic layers were combined, dried over Na2S04 and concentrated to give a crude product, which was purified by ISCO with 0-1 00% EtOAc:EtOH (3:1 ) in hexanes to give two peaks of same mass. Peak two was the desired product based on NMR. 1 H NMR (400 MHz, DMSO-d6) delta 7.48 – 7.40 (m , 2H), 7.30 (dt, J = 7.8, 1 .1 Hz, 2H) , 3.49 (t, J = 11 .4 Hz, 2H), 2.87 – 2.74 (m , 2H), 2.74 – 2.60 (m , 1 H), 2.41 (s, 3H), 2.34 (s, 3H), 1 .87 – 1 .63 (m , 4H). Method 1 : RT = 1 .12 min. ; M/Z (M+H) = 408.1 .

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 4923-01-7.

Reference:
Patent; NOVARTIS AG; CHIANELLI, Donatella; GIBNEY, Michael; LERARIO, Isabelle K.; LIANG, Fang; LIU, Xiaodong; MOLTENI, Valentina; NAGLE, Advait Suresh; SMITH, Jeffrey M.; SUPEK, Frantisek; XIE, Yongping; YEH, Vince; (64 pag.)WO2018/229683; (2018); 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.7343-34-2, name is 3,5-Dimethyl-4H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Product Details of 7343-34-2

Intermediate 2 4-(3,5-dimethyl-lH-l,2,4-triazol-l-yl)-6-iodo-2-methylpyrimidine (Intermediate 2) A mixture of 4,6-dichloro-2-methylpyrimidine (505 mg, 3.1 mmol), 3,5-dimethyl-lH-l,2,4- triazole (300 mg, 3.1 mmol) and CS2CO3 (1.54 g, 4.7 mmol) in THF (20 mL) was heated at reflux overnight. The mixture was filtered and the filtrate was concentrated to give 4-chloro-6- (3,5-dimethyl-lH-l,2,4-triazol-l-yl)-2-methylpyrimidine that was used without further purification. MS: m/z = 224.1 (M+H). To a mixture of 4-chloro-6-(3,5-dimethyl-lH-l,2,4-triazol-l-yl)-2-methylpyrimidine (2.00 g, 8.9 mmol), KI (4.44 g, 26.8 mmol) was added 57percent aq. HI solution (20 mL, 89.2 mmol). After heating at 70 °C for 5 min, water (20 mL) was added to the reaction mixture. The white solid was filtered, rinsed with water, and dried under vacuum to give Intermediate 2 as a white solid. XH NMR (400 MHz, DMSO) delta 8.06 (s, 1H), 2.78 (s, 3H), 2.62 (s, 3H), 2.30 (s, 3H). MS: m/z = 316.1 (M+H).

We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 3,5-Dimethyl-4H-1,2,4-triazole ,and how the biochemistry of the body works.

Reference:
Patent; MERCK SHARP & DOHME CORP.; KUDUK, Scott, D.; MCCOMAS, Casey, C.; REGER, Thomas, S.; WO2014/78216; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 61-82-5, name is 1H-1,2,4-Triazol-5-amine belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 61-82-5

General procedure: A mixture of 3-amino-1,2,4-triazole or benzimidazole (1.0 mmol), benzaldehyde (1.0 mmol), dimedone (1.0 mmol), and acetonitrile (5 mL) was taken in a round bottom flask and added iodine (10 mol %) and stirred at 80 C for 10 min. After completion of the reaction, as monitored by TLC, the reaction mass was cooled to room temperature and the solid separated was filtered and washed with water and dried at reduced pressure.Data of representative examples

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1H-1,2,4-Triazol-5-amine help many people in the next few years.

Reference:
Article; Puligoundla, Ravinder Goud; Karnakanti, Shuklachary; Bantu, Rajashaker; Nagaiah, Kommu; Kondra, Sudhakar Babu; Nagarapu, Lingaiah; Tetrahedron Letters; vol. 54; 20; (2013); p. 2480 – 2483;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 7170-01-6, 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. 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.

Example 4; Preparation of Compound C’ from Compound B’ (Example 2); Compound B’ (60.00 g, 0.274 mol) (prepared as in Example 2) was added in portions to a melt of 3-methyl-1,2,4-triazole (113.8 g, 1.369 mol) under argon at 110-120 C. The mixture was heated to about 143 C. and the resulting solution was stirred at 142-44 C. for 17 h. After cooling to 120 C., 1-methyl-2-pyrrolidinone (NMP) (60 mL) was added quickly. The solution was further cooled to about 95 C. and water (300 mL) was added slowly (about 30 min.) keeping the temperature at 85 and 95 C. resulting in crystallization of the product. The slurry was cooled slowly to 0-5 C. and held for about 1 h. The cold slurry was filtered and the cake washed with cold H2O (2×75 mL) then dried in vacuo at 55 C. for 16 h affording 34.5 g Compound C’ as a crystalline, tan solid (54.9%), HPLC AP 98.2. If necessary, the product could be further purified by recrystallization from ethyl acetate. 1H NMR (400 MHz, CDCl3) delta 2.55 (s, 3H), 4.05 (s, 3H), 6.73 (dd, 1H, J=2.9, 2.6), 7.42 (dd, 1H, J=2.9, 2.8), 7.57 (s, 1H), 9.16 (s, 1H), 10.29 (bs, 1H). Anal. Calcd for C11H11N5O: C, 57.63; H, 4.84; N, 30.55. Found: C, 57.37; H, 4.74; N, 30.79.

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

Reference:
Patent; Bristol-Myers Squibb Company; US2006/293304; (2006); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 4928-87-4, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 4928-87-4, name is 1,2,4-Triazole-3-carboxylic acid, 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.

Single crystals of 1 were prepared by a branched tube method [13], 1H-1,2,4-triazole-3-carboxylic acid (0.117 g, 1 mmol), lead(II) nitrate (0.331 g, 1 mmol) and potassium bromide (0.119 g, 1 mmol) were placed in the bottom main of a branched tube. Water was carefully added to fill both arms, and then the arm to be heated was placed in oil bath at 60 C. After 3 days, colorless crystals were deposited in the cooler arm which were filtered off, washed with water and air dried. (0.225 g, yield 54%), m.p. ?195 C. (Found C 8.55, H 0.99, N 10.43%. calculated for C3H4BrN3O3Pb; C 8.63, H 0.96, N 10.07%). IR (cm-1) selected bands: 464 (s), 651 (s), 1100 (s), 1303 (m), 1370 (m), 1457 (vs), 1606 (s) and 3370 (br).

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 1,2,4-Triazole-3-carboxylic acid, hurry up and to see.

Reference:
Article; Safarifard, Vahid; Morsali, Ali; Joo, Sang Woo; Ultrasonics Sonochemistry; vol. 20; 5; (2013); p. 1254 – 1260;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 16681-65-5, 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. 16681-65-5, name is 1-Methyl-1H-1,2,3-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.

1-Methyl-1H-1,2,3-triazole was prepared according to the literature reference WO2008/98104. To a 2 L flask containing 1-methyl-1H-1,2,3-triazole (9 g, 108.3 mmol) was added THF (1500 mL) and the solution was cooled to -40 C. To this colorless homogeneous solution was added n-butyllithium (2.5 M in hexanes, 45 mL, 112.5 mmol) dropwise which immediately afforded a dark brown viscous mixture. The mixture was kept between -10 to -20 C. for 60 minutes, then a THF solution of 2,4-dimethylthiazole-5-carbaldehyde (17.2 g, 121.8 mmol in 200 mL THF) was introduced via cannula. Once the aldehyde was added the reaction was allowed to warm to room temperature. After 3 hours, the reaction was quenched by pouring into a saturated solution of aqueous NH4Cl. The aqueous portion was extracted with EtOAc in portions, 7*400 mL. The combined organics were washed with brine, dried over MgSO4, filtered and concentrated to give a brown oil. Chromatography on silica gel (10% acetone-DCM increasing to 50% acetone and increasing to 10% MeOH-DCM) provided the title compound as an amber solid.

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 16681-65-5.

Reference:
Patent; Janssen Pharmaceutica NV; Leonard, Kristi A.; Barbay, Kent; Edwards, James P.; Kreutter, Kevin D.; Kummer, David A.; Maharoof, Umar; Nishimura, Rachel; Urbanski, Maud; Venkatesan, Hariharan; Wang, Aihua; Wolin, Ronald L.; Woods, Craig R.; Fourie, Anne; Xue, Xiaohua; Cummings, Maxwell D.; Jones, William Moore; Goldberg, Steven; US2015/105366; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 3641-08-5, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 3641-08-5, name is 2H-1,2,4-Triazole-3-carboxamide, 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.

EXAMPLE 10 Preparation of 1(and 2 and 4)-Pivaloyl-s-triazole-3-carboxamide To a cooled, stirred mixture of 3 g. of 1,2,4-triazole-3-carboxamide and 3.4 g. of pivaloyl chloride in 125 ml. of anhydrous diethyl ether is added rapidly 2.75 g. of triethylamine. The cooling bath is removed and the mixture is stirred at room temperature for 24 hours. The off-white solid is collected by filtration and washed thoroughly with diethyl ether and then cold water.

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 2H-1,2,4-Triazole-3-carboxamide.

Reference:
Patent; American Cyanamid Company; US4006159; (1977); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 217448-86-7, 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. 217448-86-7, name is Methyl 1-(2,6-difluorobenzyl)-1H-1,2,3-triazole-4-carboxylate, molecular formula is C11H9F2N3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

General procedure: A 250 mL two-necked round bottomflask was charged with sodium azide (6.10 g, 93.8 mmol), compound2 (1.90 g, 6.84 mmol), and water (20 mL). After the solidwas completely dissolved, compound 1a (5.0 g, 31.37 mmol) andCH3CN (80 mL) were added. The mixture was stirred at room temperaturefor 3 h, and then the CH3CN layer was separated. To theCH3CN solution were added Cu2O-NP (0.42 g) and compound 4(2.80 mL, 31.3 mmol), and the reaction mixture was stirred for8 h at room temperature under protection of inert gas. The mixturewas filtered and the filtrate was concentrated, and was chargedwith methanol (40 mL) and 35% ammonia in water (100 mL). The mixture was heated to 65 C and refluxed for 4 h, cooled to roomtemperature, and filtered. The resulting solid was washed withwater and methanol to obtain rufinamide (5.25 g, 71.6%) as colorlesscrystalline product. Mp: 242-244 C. 1H NMR (400 MHz,DMSO-d6) d 8.549 (s, 1H), 7.842 (br s, 1H), 7.566-7.470 (m, 2H),7.215-7.174 (m, 2H), 5.723 (s, 2H). 13C NMR (100 MHz, DMSOd6)d 162.5, 161.7, 160.0, 143.3, 132.3, 127.4, 112.4, 111.5, 41.66.MS (ESI+): 239.06.

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 Methyl 1-(2,6-difluorobenzyl)-1H-1,2,3-triazole-4-carboxylate, hurry up and to see.

Reference:
Article; Wang, Jing-Han; Pan, Cheng-Wen; Li, Yong-Tao; Meng, Fan-Fei; Zhou, Hong-Gang; Yang, Cheng; Zhang, Quan; Bai, Cui-Gai; Chen, Yue; Tetrahedron Letters; vol. 54; 26; (2013); p. 3406 – 3409;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development 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. 956317-36-5, name is 5-Methyl-2-(2H-1,2,3-triazol-2-yl)benzoic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. name: 5-Methyl-2-(2H-1,2,3-triazol-2-yl)benzoic acid

HOBt.H2O (1.1 g, 7.4 mmol) and EDC.HCl (1.4 g, 7.4 mmol) were added to a solution of 3,3-diethoxypropan-1-amine (0.96 mL, 5.9 mmol) and 5-methyl-2-(2H-1,2,3-triazol-2-yl)benzoic acid (1.0 g, 4.9 mmol) in DMF (18 mL), followed by stirring at room temperature for 3 hours. An aqueous NaHCO3 solution was added to the reaction solution, followed by extraction with EtOAc. The organic layer was washed with water and brine and was dried with Na2SO4. The desiccant was then removed by filtration, and the solvent was distilled off under reduced pressure. The resulting residue was purified by column chromatography (KP-Sil: 25 g, hexane/EtOAc=85/15 to 0/100) to give the titled compound (1.6 g, colorless solid). MS (ESI pos.) m/z: 333 [M+H]+

If you are hungry for even more, make sure to check my other article about 956317-36-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; TAISHO PHARMACEUTICAL CO., LTD.; Suzuki, Ryo; Futamura, Aya; Abe, Masahito; Kashiwa, Shuhei; Hattori, Nobutaka; Nozawa, Dai; Ohta, Hiroshi; Araki, Yuko; US2014/81025; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics