Category: 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.930-33-6, name is 1H-1,2,4-Triazol-3(2H)-one belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Quality Control of 1H-1,2,4-Triazol-3(2H)-one

To a mixture containing 2,4-dihydro-3H-1,2,4-triazol-3-one (307 mg, 3.6 mmol) and potassium carbonate (250 mg, 1.8 mmol) in DMF ( 10 mL) at 90 C was incrementally added 4 (150 mg, 0.36 mmol) over 3 hrs. Then the mixture was stirred for 2 days and then cooled to RT and diluted with 50 mL of water and extracted with (3× 10 m) ethylacetate, dried over magnesium sulfate, filtered, dried and concentrated under reduced pressure to give a brown residue. The required product 11c was isolated by reverse phase column chromatography with 29 % of acetonitrile-water mixture. The desired product was obtained as white solid, 21 % yield. 1H NMR (399 MHz, DMSO-d6) delta 11.71 (s, 1H), 7.85 (s, 1H), 7.51 (t, J = 8 Hz, 1H), 7.49 (dd, J = 8, 4 Hz, 1H), 7.15 (dd, J = 8, 4 Hz, 1H), 4.95-4.92 (m, 1H), 4.16 (t, J = 8 Hz, 1H), 3.98-3.85 (m, 3H). LCMS (ESI): m/z [M + H]+ calcd for C12H10FIN4O3, 405.1; found, 405.6

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-1,2,4-Triazol-3(2H)-one ,and how the biochemistry of the body works.

Reference:
Article; Spaulding, Andrew; Takrouri, Khuloud; Mahalingam, Pornachandran; Cleary, Dillon C.; Cooper, Harold D.; Zucchi, Paola; Tear, Westley; Koleva, Bilyana; Beuning, Penny J.; Hirsch, Elizabeth B.; Aggen, James B.; Bioorganic and Medicinal Chemistry Letters; vol. 27; 23; (2017); p. 5310 – 5321;,
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. 4928-88-5, name is Methyl 1H-1,2,4-triazole-3-carboxylate belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of Methyl 1H-1,2,4-triazole-3-carboxylate

EXAMPLE 3 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 3 hours, while maintaining the temperature of the reaction mixture at 105+-5° C. And then, the reaction mixture was crystallized with 300.8 ml of methanol to give 58.6 g of 1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1,2,4-triazole-3-carboxylic acid methyl ester (yield: 80percent).

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 4928-88-5

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

Application of 41253-21-8, 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. 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-(1H-1,2,4-triazol-1-yl)benzonitrile. A suspension of 2,5-difluorobenzonitrile (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 C. for 15 h. The reaction mixture was then cooled, diluted with CH2Cl2 (200 mL), washed with water (3×30 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 (1H, s), 8.18 (1H, s), 7.76 (1H, dd, J=9.0, 4.8 Hz), 7.55 (1H, dd, J=7.3, 2.8 Hz), 7.51-7.47 (1H, m). LCMS (M+H) calcd for C9H6FN4: 189.17. found: 189.10.

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 Sodium 1,2,4-triazol-1-ide.

Reference:
Patent; Bristol-Myers Squibb Company; US2007/129379; (2007); A1;,
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. 1001401-62-2, name is 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. HPLC of Formula: C9H7N3O2

A solution of (R)-tert-butyl 5-methyl-l,4-diazepane-l-carboxylate Int A (2.50 g, 11.7 mmol) in DMF (50 mL) was treated with Int H (2.21 g, 11.7 mmol), HATU (4.47 g, 11.8 mmol), and DIEA (4.89 ml, 28.0 mmol). The reaction was stirred at room temperature overnight, then diluted with saturated, aqueous NH4CI. The solution was extracted with EtOAc (2x) and the organics were subsequently washed with brine, then with water, then with brine again, dried over MgS04, filtered, and concentrated. The crude material was purified by silica gel gradient chromatography (0-60% ethyl acetate in hexanes), providing 1-1 as an oil. LRMS m/z (M+H) 386.2 found, 386.2 required.

If you are hungry for even more, make sure to check my other article about 1001401-62-2, the application of this compound in the production field has become more and more popular.

Reference:
Patent; MERCK SHARP & DOHME CORP.; KUDUK, Scott, D.; REGER, Thomas, S.; SKUDLAREK, Jason, W.; (0 pag.)WO2016/85784; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 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. Computed Properties of C3H3N3O2

Example 5-5Preparation of ((1R, 3s, 5S)-3-(7-amino-6-isopropyl-3-( 6-phenylpyridin-3- yl)pyrazolo[1,5-a]pyrimidin-5-yl)-8-azabicyclo[3.2.1]octan-8-yl)(4H-1,2,4-triazol-3- yl)methanoneA mixture of 5-((1 R,3s,5S)-8-azabicyclo[3.2.1]octan-3-yl)-6-isopropyl-3-(6- phenylpyridin-3-yl)pyrazolo[1 ,5-a]pyrimidin-7-amine (30 mg, 0.068 mmol), 41-1-1 ,2,4- triazole-3-carboxylic acid (10.1 mg, 0.085 mmoL), EDC (26.0 mg, 0.14 mmoL), HOBt (18.4 mg, 0.14 mmoL) and DIEA (70.9 ul, 0.41 mmoL) in DMF (2 mL) was stirred at room temperature. Purification with prep-LC provided ((1 R,3s,5S)-3-(7-amino-6- isopropyl-3-(6-phenylpyridin-3-yl)pyrazolo[1 ,5-a]pyrimidin-5-yl)-8- azabicyclo[3.2.1]octan-8-yl)(4H-1 ,2,4-triazol-3-yl)methanone, LCMS tR = 2.25 Min (10 min run, UV254nm). Mass calculated for, M+ 533.2, observed LC/MS m/z 533.99 (M+H).

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 4928-87-4, and we look forward to future research findings.

Reference:
Patent; MERCK SHARP & DOHME CORP.; SCHERING CORPORATION; SIDDIQUI, M. Arshad; NAN, Yang; PATEL, Mehul, F.; REDDY, Panduranga Adulla P.; MANSOOR, Umar Faruk; MENG, Zhaoyang; VITHARANA, Lalanthi Dilrukshi; ZHAO, Lianyun; MANDAL, Amit, K.; LIU, Duan; TANG, Shuyi; MCRINER, Andrew; BELANGER, David, B.; CURRAN, Patrick, J.; DAI, Chaoyang; ANGELES, Angie, R.; YANG, Liping; DANIELS, Matthew Hersh; WO2011/90935; (2011); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 7170-01-6, 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, 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.

41. 5-(3-Methyl-1H-1,2,4-triazole-1-yl)-1,6-naphthyridin-2-(1H)-one A stirred mixture containing 13.5 g of 5-bromo-1,6-naphthyridin-2(1H)-one, 20 g of 3-methyl-1H-1,2,4-triazole and 75 ml of N-methylpyrrolidinone was heated in an oil bath at 170-180 C. for 18 hours and then cooled to room temperature whereupon a tan solid crystallized out. The mixture was diluted by adding 125 ml of water and the separated solid was collected, washed with water, air-dried and combined with another 1.2 g sample of the same material obtained in another run starting with 2.25 g of 5-bromo-1,6-naphthyridin-2(1H)-one. The combined solids were recrystallized from dimethylformamide and dried in an oven at 95-100 C. for three days to yield 6.1 g of 5-(3-methyl-1H-1,2,4-triazole-1-yl)-1,6-naphthyridin-2(1H)-one, m.p. >300 C.

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 3-Methyl-1H-1,2,4-triazole.

Reference:
Patent; Sterling Drug Inc.; US4657915; (1987); A;,
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. 4928-87-4

Step 7: Preparation of ((lR,3s,5S)-3-(8-amino-3-(6-phenylpyridin-3-yl)imidazo[l,2-a]pyrazin- 6-yl)-8-azabicyclo[3.2.1]octan-8-yl)(4H-l ,2,4-triazol-3-yl)methanone A mixture of crude 6-((lR,3s,5S)-8-azabicyclo[3.2.1]octan-3-yl)-3-(6-phenylpyridin- 3-yl)imidazo[l,2-a]pyrazin-8-amine from step 7, lH-l ,2,4-triazole-3-carboxylic acid (33.0 mg, 0.29 mmol), EDCI (92.9 mg, 0.49 mmol), 1-hydroxybenzotriazole (65.6 mg, 0.49 mmol) and DIEA (253 ul, 1.46 mmol) in DMF (5 mL) was stirred at room temperature for lh.Purification with prep-LC and conversion to HCl salt provided ((lR,3s,5S)-3-(8-amino-3-(6- phenylpyridin-3-yl)imidazo[l,2-a]pyrazin-6-yl)-8-azabicyclo[3.2.1]octan-8-yl)(4H-l ,2,4- triazol-3-yl)methanone as HCl salt: LCMS tR = 2.25 Min (10 min run, UV254nm). Mass calculated for, M+ 491.2, observed m/z 492.3 (M+H).

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; MERCK SHARP & DOHME CORP.; MENG, Zhaoyang; SIDDIQUI, M. Arshad; REDDY, Panduranga Adulla, P.; WO2013/16160; (2013); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 27996-86-7, name is 4-[1,2,4]Triazol-1-yl-benzaldehyde belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 4-[1,2,4]Triazol-1-yl-benzaldehyde

Step 1. (E)-3-(4-(1H-1,2,4-triazol-1-yl)phenyl)-1-(3,5-dichlorophenyl)prop-2-en-1-one To a solution of 1-(3,5-dichlorophenyl)ethanone (0.5 g, 2.6 mmol) in ethanol (20 mL) was added 4-(1H-1,2,4-triazol-1-yl)benzaldehyde (0.46 g, 2.65 mmol) and the reaction was cooled to 0 C. NaOH (0.22 g, 5.29 mmol) in water (10 mL) was then added and the reaction was allowed to stir for 2 h at 0 C. The reaction was extracted with EtOAc and the combined organic layers were dried over Na2SO4 and concentrated under reduced pressure to afford the title compound (0.149 g, 17%):); ESIMS m/z 430.05 ([M+H]+) 344.08

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 27996-86-7

Reference:
Patent; Dow AgroSciences LLC; Lo, William C.; Hunter, James E.; Watson, Gerald B.; Patny, Akshay; Iyer, Pravin S.; Boruwa, Joshodeep; US2014/171314; (2014); 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. 1001401-62-2, name is 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. Quality Control of 2-(2H-1,2,3-Triazol-2-yl)benzoic acid

Example 73 N-[(1S,2S)-2-{Methyl[5-(trifluoromethyl)pyrazin-2-yl]amino}cyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide A solution of (S,2S)-1-N-methyl-1-N-[5-(trifluoromethyl)pyrazin-2-yl]cyclopentane-1,2-diamine (Intermediate 22; 59 mg, 0.23 mmol), 2-(2H-1,2,3-triazol-2-yl)benzoic acid (CAS number 1001401-62-2; 51.5 mg, 0.27 mmol), EDC (65.2 mg, 0.34 mmol), 3H-[1,2,3]triazolo[4,5-b]pyridin-3-ol (52.4 mg, 0.34 mmol) and triethylamine (0.095 ml, 0.68 mmol) in DCM (2 ml) was stirred at room temperature for 18 hours. The reaction mixture was diluted with DCM (3 ml) and washed with HCl (aq, 1M, 2 ml) then a saturated solution of sodium bicarbonate (2 ml). The organics were filtered through a hydrophobic frit and concentrated in vacuo. The resulting residue was purified by reverse phase preparative HPLC (eluted with acetonitrile/water containing 0.1% ammonia) to afford the title compound. 1H NMR (400 MHz, DMSO-d6) delta ppm 1.47-1.61 (m, 1H), 1.66-1.78 (m, 3H), 1.83-2.03 (m, 2H), 3.03 (s, 3H), 4.32-4.48 (m, 1H), 4.69-4.86 (m, 1H), 7.15-7.24 (m, 1H), 7.39-7.48 (m, 1H), 7.53-7.61 (m, 1H), 7.65-7.76 (m, 1H), 7.90 (s, 2H), 8.29-8.39 (m, 2H), 8.41-8.49 (m, 1H) MS ES+: 432

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 1001401-62-2.

Reference:
Patent; Takeda Pharmaceutical Company Limited; Fieldhouse, Charlotte; Glen, Angela; Maine, Stephanie; Fujimoto, Tatsuhiko; Robinson, John Stephen; US2015/232460; (2015); 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. 49607-51-4, name is 1-Methyl-1H-1,2,4-triazol-3-amine belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. HPLC of Formula: C3H6N4

3,4-Dimethylfuran-2,5-dione (550 mg, 4.36 mmol, 1.05 equiv) and 1-methyl-1H-1,2,4-triazole-3-amine (407 mg, 4.15 mmol, 1.00 equiv) were dissolved in concentrated acetic acid (15 ml) and stirred under reflux conditions for 7 h. After cooling to room temperature, water and ethyl acetate were added and the mixture was extracted. The aqueous phase was repeatedly re-extracted vigorously with ethyl acetate, and the combined organic phases were then dried over magnesium sulfate, filtered and concentrated. Final purification by column chromatography of the resulting crude product (gradient ethyl acetate/heptane) gave 3,4-dimethyl 1-(1-methyl-1H-1,2,4-triazol-3-yl)-1H-pyrrole-2,5-dione in the form of a colorless solid (90 mg, 10% of theory). 1H-NMR (400 MHz, d6-DMSO delta, ppm) 8.09 (s, 1H), 3.75 (s, 3H), 2.01 (s, 6H).

If you are hungry for even more, make sure to check my other article about 49607-51-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Bayer CropScience Aktiengesellschaft; Bayer Aktiengesellschaft; FRACKENPOHL, Jens; HELMKE, Hendrik; FRANKE, Jana; REINGRUBER, Anna Maria; MACHETTIRA, Anu Bheemaiah; GATZWEILER, Elmar; ROSINGER, Christopher Hugh; SCHMUTZLER, Dirk; DIETRICH, Hansjoerg; LUEMMEN, Peter; (96 pag.)US2019/330192; (2019); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics