Category: Triazoles

Research speed reading in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 626248-56-4, name is 3-(2H-1,2,3-Triazol-2-yl)aniline belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Computed Properties of C8H8N4

Example 15 3-(3-(2H-1,2,3-triazol-2-yl)phenylamino)-5-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)pyrazine-2-carboxamide A mixture of 5-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)-3-chloropyrazine-2-carbonitrile (76 mg, 0.264 mmol), 3-(2H-1,2,3-triazol-2-yl)aniline (60 mg, 0.375 mmol), K2CO3 (80 mg, 0.579 mmol), BINAP (25 mg, 0.040 mmol) and Pd(OAc)2 (10 mg, 0.044 mmol) in dioxane (2 mL) was degassed with Ar, then was stirred at 110 C for 3 h. The mixture was concentrated in vacuo. The residue was purified by HPLC to give 3-(3-(2H-1,2,3-triazol-2-yl)phenylamino)-5-((1R,2R)-2-amino-3,3-difluorocyclohexylamino)pyrazine-2-carbonitrile (41 mg).

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 626248-56-4, and we look forward to future research findings.

Reference:
Patent; Portola Pharmaceuticals, Inc.; Song, Yonghong; Xu, Qing; Jia, Zhaozhong J.; Kane, Brian; Bauer, Shawn M.; Pandey, Anjali; US2013/131040; (2013); 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.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. category: Triazoles

To a solution of l-chloro-2-(4-methoxybenzyloxy)-4-nitrobenzene (15 g, 51.1 mmol) in DMSO (45 mL) was added potassium hydroxide (4.3 g, 77 mmol) followed by methyl triazole (6.39 g, 77 mmol) at room temperature. The reaction mixture was heated at 95 C for 18 h. The reaction mixture was poured onto crushed ice (1.5 Kg) and extracted with ethyl acetate (3 x 250 mL). It was then washed with brine (3 x 250 mL) and dried over sodium sulphate. The solvent was removed under reduced pressure and the residue was dissolved in dichloromethane (25 mL) and absorbed onto silica (25 g). The resultant slurry of the compound on silica was subjected to flash chromatography using a Teledyne Isco instrument (120 g RediSep silica column, with 50% ethyl acetate in pet-ether) to get Intermediate J(2) (6 g, 34.5%) as a yellow solid and Intermediate J(3) (4.5 g, 24.9%) as a dark brown solid.Analytical data of J(2): LC-MS (M+H)+ = 341.2. IH NMR (400 MHz, CDC13) delta ppm 8.83 (IH, s), 8.13 (IH, d, J=8.8 Hz), 8.06 (IH, s), 8.09 (IH, d, J= 8.8 Hz), 7.35 (2H, d, J=8.4 Hz), 6.94 (2H, d, J= 6.4 Hz), 5.29 (2H, s), 3.83 (3H, s), 2.47 (3H, s).Analytical data of J(3): LC-MS (M+H)+ = 341.2. IH NMR (400 MHz, CDC13) delta ppm 8.03-7.96 (3H, m), 7.57 (IH, d, J= 8.8 Hz), 7.20 (2H, d, J=8.4 Hz), 6.89 (2H, d, J=8.8 Hz), 5.13 (2H, s), 3.80 (3H, s), 2.32 (3H, s).

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-Methyl-1H-1,2,4-triazole ,and how the biochemistry of the body works.

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; BOY, Kenneth M.; GUERNON, Jason M.; MACOR, John E.; THOMPSON III, Lorin A.; WU, Yong-Jin; ZHANG, Yunhui; WO2012/9309; (2012); 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. 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. 7343-33-1

General procedure: To a reaction vial were added 2-bromo-5-(trifluoromethoxy)pyridine ( 1.0 g, 4.1 mmol) and 3-bromo- l – -l,2,4-triazole (0.91 g, 6.2 mmol). Lambda ,/V-Dimethylformamide (16 ml_) and cesium carbonate (2.6 g, 8.2 mmol) were added, and the vial was degassed for 5 minutes with argon. Copper(I) iodide (0.077 g, 0.41 mmol) was added, and the via l was further degassed for 5 minutes with argon. The vial was capped and heated at 100 C for 1 hour in a Biotage Initiator microwave reactor, with external IR-sensor temperature monitoring from the side of the vessel. The reaction mixture was cooled to room temperature, poured onto crushed ice (3 volumes), and extracted with ethyl acetate (3 x 150 ml_). The combined organic layers were dried over sodium sulfate, filtered, and concentrated. Purification by flash column chromatography using 0-40% ethyl acetate/hexanes as eluent provided the title compound as a pale brown liquid (0.40 g, 31%) : *H N MR (400 MHz, CDCI3) delta 9.01 (s, 1H), 8.39 (d, J = 2.4 Hz, 1H), 7.94 (d, J = 8.8 Hz, 1H), 7.77 (dd, J = 1.6 Hz, 8.8Hz, 1H) ; ESIMS m/z 309 ([M + H]+).

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

Reference:
Patent; DOW AGROSCIENCES LLC; GIAMPIETRO, Natalie C.; CROUSE, Gary D.; SPARKS, Thomas C.; DEMETER, David A.; (242 pag.)WO2017/40742; (2017); 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. 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

A mixture of 2,3-difluorobenzonitrile (4.0 g, 28.8 mmol), 2H-1 ,2,3-triazole (1 .9 g, 28.8 mmol) in DMF (85.0 mL) and K2CO3 (7.9 g, 57.5 mmol) were heated to 125 C for 1 .5 h. After cooling to rt, water was added and the mixture extracted with EtOAc (2 X). The combined organics were washed with brine and dried (Na2SO4). Purification via FCC (10-100% EtOAc in hexanes) gave two products. 3-Fluoro-2-(2H-1 ,2,3-triazol-2- yl)benzonitrile (1 .6 g, 29%), 1H NMR (CDCI3): 7.99 (s, J = 6.6 Hz, 2H), 7.67 – 7.63 (m, 1 H), 7.61 – 7.53 (m, 2H), 7.26 (s, 6 H) and 3-fluoro-2-(1 H-1 ,2,3-triazol- 1 -yl)benzonitrile (2.0 g, 38%) 1H NMR (CDCI3): 7.97 (dd, J = 4.4, 2.8 Hz, 1 H), 7.95 (d, J = 1 .2 Hz, 1 H), 7.70 (tt, J = 5.7, 2.8 Hz, 1 H), 7.65 (td, J = 8.1 , 4.9 Hz, 1 H), 7.62 – 7.57 (m, 1 H).

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 288-36-8.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; BRANSTETTER, Bryan, James; LETAVIC, Michael, A.; LY, Kiev, S.; RUDOLPH, Dale, A.; SAVALL, Brad, M.; SHAH, Chandravadan, R.; SHIREMAN, Brock, T.; WO2011/50200; (2011); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 4923-01-7, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 4923-01-7, name is 5-Methyl-4H-1,2,4-triazol-3-amine, 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.

General procedure: 3-Amino-1,2,4-triazole 8a-f (1.0 mmol), o-hydroxybenzaldehyde9a-e (1.0 mmol), acetone (10) (0.22 ml,3.0 mmol), and abs. EtOH (2 ml) were mixed in amicrowave process vial, and then 4 N solution of HCl indioxane (0.07 ml, 0.3 mmol) was added. The mixture wasirradiated at 150C for 30 min. The reaction mixture wascooled by an air flow and stirred for 24 h at roomtemperature for complete precipitation of the product. Theprecipitate was filtered off, washed with EtOH (1 ml) andEt2O (3×1 ml), and dried. Compounds 1a-w were obtainedin a form of white solids.

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 5-Methyl-4H-1,2,4-triazol-3-amine.

Reference:
Article; Guemue?, Mustafa K.; Gorobets, Nikolay Yu.; Sedash, Yuriy V.; Chebanov, Valentin A.; Desenko, Sergey M.; Chemistry of Heterocyclic Compounds; vol. 53; 11; (2017); p. 1261 – 1267; Khim. Geterotsikl. Soedin.; vol. 53; 11; (2017); p. 1261 – 1267,7;,
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. 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. Safety of 4H-1,2,4-Triazol-4-amine

General procedure: Synthesis of triazole Schiff?s bases was reportedpreviously [44]. Briefly, 4-arylimino-1,2,4-triazoles (1-14)and 3-arylimino-1,2,4-triazoles (15-23) were synthesized byrefluxing 4-amino-1,2,4-triazoles, or 3-amino-1,2,4-triazoles(2 mM) with equimolar amounts of substituted benzaldehydeand H2SO4 (2 mL) in ethanol (15 mL) for 4-10 h. Reactionprogress was monitored by TLC under UV light at 254 and365 nm or via exposure to iodine vapours. After completionof reaction, the solvent was vaporised under reducedpressure on a rotary evaporator. Resulting compounds werewashed with hexane and crystallized from ethanol to obtain apure compounds.

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 4H-1,2,4-Triazol-4-amine help many people in the next few years.

Reference:
Article; Choudhary, Muhammad I.; Imad, Rehan; Khan, Khalid M.; Naqeeb, Uzma; Shaikh, Muniza; Siddiqui, Salman; Subzwari, Fakiha; Zafar, Humaira; Medicinal Chemistry; vol. 16; 4; (2020); p. 575 – 591;,
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. 4928-87-4, name is 1,2,4-Triazole-3-carboxylic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. HPLC of Formula: C3H3N3O2

To a reaction of H-, 2, 4-triazole-3 -carboxylic acid (226 mg, 2.0 mmol) and 4- (tert-butyl)aniline (0.33 mL, 2.1 mmol) in dry DMF (10 mL) was added 1- hydroxybenzotriazole monohydrate (337 mg, 2.2 mmol) and EDC (N-(3- Dimethylaminopropyl)-N’-ethylcarbodiimide) (422 mg, 2.2 mmol) followed by N- methylmorpholine (0.88 mL, 8.0 mmol via syringe). The mixture was stirred at room temperature under nitrogen and the solids were gradually dissolved. The contents were stirred at room temperature for 24.0 h, and then slowly diluted into iced water and extracted with DCM (2 x 50 mL). The DCM phase was washed with ice cold water (2 x 100 mL). The DCM phase was dried over anhydrous Na2S04, filtered and concentrated under reduced pressure and chromatographed on silica gel using EtOAc and Hexanes (60:40) as eluents to get the desired amide 13 (123 mg, 25 % yield) as a white solid compound. -NMR (400 MHz, DMSO-de): (br s, 1H), 7.74 (d, J= 8.8 Hz, 2H), 7.37 (d, J= 8.4 Hz, 2H), 1.28 (s, 9H) ppm. MH+ = 245.2 m/z.

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 4928-87-4

Reference:
Patent; THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE; NATIONAL JEWISH HEALTH; WEMPE, Michael Fitzpatrick; VAZQUEZ-TORRES, Andres; DAI, Shaodong; (72 pag.)WO2020/41556; (2020); 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. 4928-87-4, name is 1,2,4-Triazole-3-carboxylic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C3H3N3O2

To a reaction of 1/7-1, 2, 4-triazole-3 -carboxylic acid (226 mg, 2.0 mmol) and Piperonylamine (0.26 mL, 2.1 mmol) in dry DMF (10 mL) was added 1- hydroxybenzotriazole monohydrate (337 mg, 2.2 mmol) and EDC (N-(3- Dimethylaminopropyl)-N’-ethylcarbodiimide) (422 mg, 2.2 mmol) followed by N- methylmorpholine (0.88 mL, 8.0 mmol via syringe). The mixture was stirred at room temperature under nitrogen and the solids were gradually dissolved. The contents were stirred at room temperature for 24.0 h, and then slowly diluted into iced water and extracted with DCM (2 x 50 mL). The DCM phase was washed with ice cold water (2 x 100 mL). The DCM phase was dried over anhydrous Na2S04, filtered and concentrated under reduced pressure and chromatographed on silica gel using EtOAc as eluents to get the desired amide 6 (95 mg, 19 % yield) as a white solid. -NMR (400 MHz, DMSO- de): <515.58-13.83 (m, 1H), 9.10 (br s, 1H), 8.47 (br s, 1H), 6.90- 6.78 (m, 3H), 5.97 (s, 2H), 4.36 (d, J= 6.4 Hz, 2H) ppm. MH+ = 247.1 m/z. 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 4928-87-4 Reference:
Patent; THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE; NATIONAL JEWISH HEALTH; WEMPE, Michael Fitzpatrick; VAZQUEZ-TORRES, Andres; DAI, Shaodong; (72 pag.)WO2020/41556; (2020); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 4928-88-5, New Advances in Chemical Research in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 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 8 A mixture of methyl 1,2,4-triazole-3-carboxylate (26.4 g, 0.21 mole) and beta-D-ribofuranosyl-1,2,3,5-tetraacetate (60.2 g, 0.19 mole) was melted and then 1.1 g of p-toluenesulfonic acid was added thereto. The reaction mixture was reacted for 5 hours, while maintaining the temperature of the reaction mixture at 95+-5° C. And then, the reaction mixture was crystallized with 180.5 ml of methanol to give 68.9 g of 1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1,2,4-triazole-3-carboxylic acid methyl ester (yield: 95percent).

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

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

Reference of 288-36-8, 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. 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.

1, 2, 3-Triazole (3.45 g, 50 mmol) , 2-iodo-5-methylbenzoic acid (5.24 g, 20 mmol) , cesium carbonate (11.72 g, 36 mmol) , trans-N, N’-dimethyl-1, 2-cyclohexanediamine (0.51 g, 3.60 mmol) , cuprous iodide (0.38 g, 2 mmol) and N, N-dimethylformamide (30 mL) were added sequentially to a 100 mL of single-necked round-bottomed flask under nitrogen, and the mixture was warmed gradually to 100 and reacted for 4 h. The reaction mixture was cooled, diluted with water, and extracted with ethyl acetate (200 mL x 2) . The aqueous layer was acidified to pH 12 with concentrated hydrochloric acid, and the resulting mixture was extracted with ethyl acetate (200 mL x 2) . The combined organic layers were dried over anhydrous sodium sulfate, and concentrated. The residue was purified by column chromatography on silica gel eluted with (dichloromethane/methanol (v/v) 50/1) to give the title compound (as a yellow solid, 2.76 g, 68) .[MS (ESI, neg. ion) m/z: 202.1 [M-H]- and1H NMR (CD3OD, 600 MHz) delta (ppm) : 7.88 (s, 2H) , 7.66 (d, 1H) , 7.59 (d, J 8.2 Hz, 1H) , 7.507.48 (dd, J 8.1 Hz, 1.1 Hz, 1H) , 2.45 (s, 3H) .13C NMR (CD3OD, 151 MHz) delta (ppm) : 169.8, 140.7, 137.5, 136.7, 133.5, 131.5, 129.3, 126.0, 21.0.

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 1H-1,2,3-Triazole is helpful to your research.

Reference:
Patent; SUNSHINE LAKE PHARMA CO., LTD.; ZHANG, Yingjun; JIN, Chuanfei; GAO, Jinheng; ZHANG, Ji; (107 pag.)WO2017/12502; (2017); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics