Category: Triazoles

Research speed reading in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic. 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

To a solution of the acid (10.4 g, 51.2 mmol) in THF (250 mL), CDI (8.7 g, 53.7 mmol) was added. After 3.5 h, aqueous NH3 solution (174.1 g, 25% in water, 2.56 mol) was added. The biphasic mixture was stirred at room temperature for 75 mm. The pH was adjusted to pH 7 with 6 N HC1 and DCM were added. The layers were separated and the organic layer was washed with water, dried over Na2504 and the solvent was removed under reduced pressure. The residue was stirred with diethyl ether for 30 mm, filtered and washed with diethyl ether to give 7.9 g (76 %) of the primary amide.1H NMR (300 MHz, d6-dmso) oe = 8.01 (s, 2H, Htriazoiyi), 7.79 (br s, 1H, NH), 7.61 (d, J =8.1 Hz, 1H, Harom), 7.40 (d, J = 8.4 Hz, 1H, Harom), 7.38 (s, 1H, Harom), 7.32 (br s, 1H, NH),2.40 (s, 3H, CH3).13C NMR (75 MHz, d6-dmso) oe = 168.6, 138.0, 135.8, 134.6, 132.0, 130.5, 129.0, 123.8,20.0.

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 956317-36-5.

Reference:
Patent; SANDOZ AG; HOeFERL-PRANTZ, Kathrin; BARTH, Roland; RICHTER, Frank; ZUPANCIC, Borut; (126 pag.)WO2016/20403; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application 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.

General procedure: Intermediate 29: step b (2,6-dimethylpyridin-4-yl)(1-methyl-1H-1,2,3-triazol-5-yl)methanone A solution of n-BuLi (3.8 mL, 9.5 mmol, 2.5 M solution in hexane) was added slowly to a solution of 1 -methyl- l H-1, 2 ,3-triazole (0.83 g, 10 mmol) in THF (48 mL) at -50 C. After- addition, stirring was continued for an additonal 30 minutes and N-methoxy-N ,2,6- trimethylisonicotinamide (0.97 g, 5.0 mmol. Intermediate 29: step a) dissolved in THF (12 mL) was slowly added. An additional 2 mL of THF was used to complete the quantitative addition. The mixture was stirred at -50 C for 5 minutes then warmed to room temperature and stirred overnight. The solution was quenched with saturated aqueous NH4C1. H20 was added and layers were separated. The aqueous layer was extracted with EtOAc and the combined organic extracts washed with brine, dried over MgSCu, filtered and evaporated in vacuo. The crude product was purified using flash column chromatography (0 to 100% EtOAc/DCM) to provide the title compound.

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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; WO2015/57205; (2015); 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.6523-49-5, name is 4-(1,2,4-Triazol-1-yl)aniline belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Formula: C8H8N4

A mixture of formamidine from Step 1 (300 mg) and 4-triazolyl-aniline (167 mg, 1 eq) in AcOH (3 ml) was heated to 80 for 2 h. Cooled, and the resulting solid was isolated by filtration, washed with sodium bicarbonate, water and MeCN. The solid was purified by column chromatography on silica gel with DCM:EtOH:NH3 (400:8:1 to 200:8:1) as eluant to give the title compound.1H NMR delta 10.36 (IH, br s), 9.29 (IH, s), 8.93 (IH, s), 8.63 (IH, s), 8.25 (2H, m), 8.03 (3H, m), 7.86 (2H, d, J 9.25Hz), 7.81 (3H, m); LC-MS rt 2.61 m/z 418 ES+.

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-(1,2,4-Triazol-1-yl)aniline ,and how the biochemistry of the body works.

Reference:
Patent; ARROW THERAPEUTICS LIMITED; WO2007/80401; (2007); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 16681-70-2, 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. 16681-70-2, name is 1H-[1,2,3]Triazole-4-carboxylic acid, molecular formula is C3H3N3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Example 41 (S)-N-(2-(2-cyanopyrrolidine-1-yl)-2-oxoethyl)-1H-1,2,3-triazole-5-carboxamide 1H-1,2,3-triazole-4-carboxylic acid (0.092 g, 0.814 mmol) was dispersed in dry dioxane (3 mL) in a round bottom flask with nitrogen. To this 1-chloro-N,N,2-trimethylprop-1-en-1-amine (0.151 ml, 1.139 mmol) was added and the reaction was stirred for 30 minutes at room temperature. The starting material dissolves over time. Then (S)-1-(2-aminoacetyl)pyrrolidine-2-carbonitrile hydrochloride (0.247 g, 1.302 mmol) with N-ethyl-N-isopropylpropan-2-amine (0.307 ml, 1.709 mmol) was added and the mixture was stirred for 2 h, evaporated to dryness and redissolved in ethyl acetate. Followed by washing with 0.1N citric acid and saturated sodium bicarbonate and brine. After drying over sodium sulfate, filtration and evaporation, the product was purified using column chromatography. Yield: 34 mg, 40% 1H NMR (400 MHz, DMSO) (9/1 mixture of trans/cis amide rotamers) delta 15.53 (s, 1H), 8.58-8.44 (s, 1H), 8.39 (s, 1H), 5.28-5.22 (m, 0.1H), 4.77 (dd, J=3.76, 7.32 Hz, 1H), 4.30 (dd, J=5.61, 16.77 Hz, 0.2H), 4.10 (d, J=5.76 Hz, 2H), 3.68 (ddd, J=4.04, 7.68, 9.39 Hz, 1H), 3.50 (td, J=6.84, 9.09 Hz, 1H), 2.31-1.88 (m, 4H). UPLC I (ESI) Rt 0.72 min, m/z 249.6 [M+H]+ (96%); LC-MS (I-B) Rt 4.0 min, m/z 249.0 [M+H]+ (96%)

In the meantime we’ve collected together some recent articles in this area about 16681-70-2 to whet your appetite. Happy reading!

Reference:
Patent; Fox Chase Cancer Center; Jansen, Koen; De Meester, Ingrid; Heirbaut, Leen; Cheng, Jonathan D.; Joossens, Jurgen; Augustyns, Koen; Van Der Veken, Pieter; US2014/357650; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 288-36-8, New Advances in Chemical Research in 2021.Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, 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.

The iodide 19 (6.04 kg, 23.0 mol), THF (45 E) and DMF (9.0 E) were charged to a vessel. Copper iodide (218 g, 1.15 mol) and potassium carbonate (7.94 kg, 57.4 mol) were added and the mixture heated to an internal temperature of40 C. 1,2,3-Triazole (3.16 kg, 46.0 mol) was added as asolution in THF (6.0 E) over half an hour (no exotherm) andheating continued to 65 C. (again no exotherm observed) and the reaction monitored by HPEC. Once complete N,Ndimethylethylenediamine (244 mE, 2.30 mol) was addedand mixture cooled to RT. Aqueous 3.6 M HC1 (36 E) wasadded (exotherm) and the mixture extracted twice with ethylacetate (2×30 E). The combined organics were washed with EiC1 solution (2×20 E). The acid solution assayed for 3.79 kg of 5 (81%) and 4.64 kg of 5 and 20 combined (99%). A solution of acids 5 and 20 (approx. 4.64 kg, 22.9 mol) in THF and EtOAc (approx. 110 E) was concentrated to lowvolume. THF (90 E) was added and the solvent composition checked by ?H NMR to ensure most ethyl acetate had been removed. Sodium tert-butoxide (2.42 kg, 25.2 mol) was added slowly as a solid over 1-2 h (slight exotherm), allowing the sodium salt to form and stirred overnight at RT. The liquors showed a 45:55 ratio of product:starting material and the solid was collected by filtration, washed with THF (2×20 E) and dried in a vacuum oven (T=40 C.) for 15 h to afford 4.22 kg of crude sodium salt. The crude sodium salt (4.22 kg, 14.9 mol) was charged to a 50 E vessel and 3.6 M HC1 (21.2 E) was added with cooling. The slurry was thenstirred at room temperature for 16 h and the off-white solidisolated by filtration. The cake was washed with water (11E) and iPAc/Heptane (2×5 E), then dried in a vacuum oven(T=35 C.) for 15 h to give 3.10 kg of crude acid 5 (97.9ECAP, 92 wt %, corrected weight 2.85 kg, 61% yield from19). The acid 5 (2.85 kg corrected, 14.0 mol) was chargedto a 50 E vessel and EtOAc (28 E) and dilute 0.22 M HC1 (14 E) were added and the mixture stirred until two clear phases resulted. The aqueous layer was removed and the organic layer filtered to remove any particulate matter. Theethyl acetate was reduced to about 8 E and then heptane (15.6 E) was added over 1 h and the liquors sampled to check for appropriate losses. The solid was isolated by filtration, washed with heptane:ethyl acetate (3:1, 4 E) and dried on the filter under nitrogen to give 2.81 kg of acid 5.m.p. 167.5 C. ?H NMR (400 MHz, d5-DMSO): oe 12.09 (brs, 1H), 8.04 (s, 1H), 7.62 (d, 1H, J=8.4 Hz), 7.58 (d, 1H, J=1.2 Hz), 7.49 (dd, 1H, J=8.4, 1.2 Hz), 2.41 (s, 3H). ?3C NMR (100.6 MHz, d5-DMSO): oe 168.0, 139.2, 136.4, 135.8, 132.5, 130.3, 128.7, 124.8, 20.9. HRMS (ESI): mlz [M+H] calcd for C,0H9N302: 204.0773; found: 204.0781.

We very much hope you enjoy reading the articles and that you will join us to present your own research about 288-36-8, Happy reading!

Reference:
Patent; MERCK SHARP & DOHME CORP.; Fleitz, Fred; Mangion, Ian; Yin, Jingjun; (11 pag.)US9441254; (2016); B2;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 7170-01-6, 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. 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.

a) 1-(2-Methoxy-4-nitro-phenyl)-3-methyl-1H-[1,2,4]triazole; A solution of 2-chloro-5-nitroanisole (1.0 g, 5.2 mmol), 3-methyl-1H-1,2,4-triazole (1.74 g, 20.9 mmol) and potassium hydroxide (0.44 g, 7.8 mmol) in dimethyl sulfoxide (5 ML) was heated to 80 C. under an atmosphere of nitrogen for two days. Water and 1M aqueous hydrogen chloride solution was added and the reaction was stirred for 45 minutes. The precipitate was filtered off, washed with water, dissolved in dichloromethane. The aqueous layer was extracted twice with dichloromethane. The combined organic layers were washed with water, dried over sodium sulfate, filtered and the solvent was evaporated. The residue was purified by reversed preparative HPLC using acetonitril/water (0.1% formic acid) to yield the title compound as a yellow solid (77 mg, 6%). MS ISP (m/e): 235.2 (100) [(M+H)+]. 1H NMR (CDCl3, 300 MHz): delta (ppm)=8.88 (s, 1H), 8.10 (d, 1H), 7.96-8.02 (m, 2H), 4.10 (s, 3H), 2.51 (s, 3H).

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Reference:
Patent; Baumann, Karlheinz; Flohr, Alexander; Goetschi, Erwin; Jacobsen, Helmut; Jolidon, Synese; Luebbers, Thomas; US2009/215759; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 288-36-8, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 288-36-8, name is 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.

2-(2H-l,2,3-Triazol-2-vD-5-methylbenzoic acid (1-7)A solution of 2-iodo-5-methylbenzoic acid (4.0 g, 15.3 mmol) in DMF (10 mL) was treated with 1,2,3-triazole (2.1 g, 30.5 mmol), CsCO3 (9.95 g, 30.5 mmol), CuI (0.145 g, 0.76 mmol) and trans-N,N’-dimethylcyclohexane-l,2-diamine (0.43 g, 3.05 mmol). The mixture was heated at 120 0C for 10 min in a microwave reactor. The reaction was cooled to room temperature, diluted with water, and washed with EtOAc. The aqueous phase was acidified with IN HCl and extracted with EtOAc. The organic layer was dried over Na2SO4, filtered and concentrated. The residue was purified by gradient elution on SiO2 (0 to 10% MeOH in water with 0.1% AcOH) to give the faster eluting 2-(2H-l,2,3-triazol-2-yl)-5-methylbenzoic acid 1-5. followed by the undesired regioisomer isomer, l-(2H-l,2,3-triazol-2-yl)-5-methylbenzoic acid. Data for K7: 1HNMR (500 MHz, DMSO-d6) d 12.98 (br s , IH), 8.04 (s, 2H), 7.72-7.45 (m, 3H), 2.41 (s, 3H) ppm.

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

Reference:
Patent; MERCK SHARP & DOHME CORP.; COX, Christopher, D.; FRALEY, Mark, E.; SCHREIER, John, D.; WO2010/48017; (2010); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 16681-70-2, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 16681-70-2, name is 1H-[1,2,3]Triazole-4-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.

B. (2S,4R)-5-Biphenyl-4-yl-2-hydroxymethyl-2-methyl-4-[(3H-[1,2,3]triazole-4-carbonyl)-amino]-pentanoic acid ethyl ester (R4=H; R7=-CH2CH3) 1,2,3-Triazole-4-carboxylic acid (11.5 mg, 102 nmol, 1.2 eq.) and HATU (38.6 mg, 102 nmol, 1.2 eq.) were dissolved in DMF (0.9 mL) and stirred at room temperature for 5 minutes. DIPEA (29.5 muL, 2.0 eq.) was added to yield the activated acid. (2S,4R)-5-Biphenyl-4-yl-4-t-butoxycarbonylamino-2-hydroxymethyl-2-methyl-pentanoic acid (35 mg, 85 mumol, 1.0 eq.) was dissolved in EtOH and 4 M of HCl in dioxane (423 muL) was added. The mixture was heated to 60 C. overnight, then concentrated to dryness and purified by reverse phase chromatography (5-60% MeCN in water over 18 minutes. The clean fractions were combined and dried under vacuum to dryness, then combined with the activated acid. After 20 minutes, the reaction was quenched with water and the product was dried under vacuum and purified by preparative HPLC to yield the title compound (4 mg, >95% purity. MS m/z [M+H]+ calc’d for C24H28N4O4, 437.21. found 437.3.

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 1H-[1,2,3]Triazole-4-carboxylic acid.

Reference:
Patent; THERAVANCE, INC.; US2012/213806; (2012); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 7411-23-6, 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, 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole, molecular formula is C2HBr2N3, 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 3,5-dibromo-1H-1,2,4-triazole (10.0 g, 44.1 mmol) in DMF (75 mL) and potassium carbonate (12.2 g, 88.2 mmol) was added iodomethane (3.02 mL, 48.5 mmol) in one portion. This gave rise to a strong exotherm from 17 C to 38 C after one minute. The reaction mixture was stirred overnight, diluted with 150 mL of EtOAc and then filtered to remove most of the inorganics. The solvent was removed under reduced pressure and the resultant yellow oily solid was partitioned between EtOAc (250 mL) and water (100 mL) and the aqueous washed with EtOAc (150 mL). The combined organics were washed with washed with brine (50 mL), dried over magnesium sulfate, filtered and the solvent removed in vacuo to give 3,5-dibromo-1-methyl-1,2,4-triazole (6.2 g, 25.8 mmol, 58% yield) as a yellow solid. UPLC-MS (ES+, Method A): 1.79 min, m/z 241.7 [M+H]+.1H NMR (400 MHz, DMSO-d6) delta 3.83 (3H).

This is the end of this tutorial post, and I hope it has helped your research about 7411-23-6!

Reference:
Patent; REDX PHARMA PLC; JONES, Clifford, D.; BUNYARD, Peter; PITT, Gary; BYRNE, Liam; PESNOT, Thomas; GUISOT, Nicolas, E.S.; (318 pag.)WO2019/145729; (2019); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 774608-89-8, 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. 774608-89-8, name is Ethyl 5-bromo-1H-1,2,4-triazole-3-carboxylate, molecular formula is C5H6BrN3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Ethyl 5-bromo-2H-1 ,2,4-triazole-3-carboxylate (Hechung Huaxue, 2004, 12(2), 191-193, Chem. Abs. 141 :350095) (3.11 g, 14 mmol) was dissolved in methanol (50 ml) and cooled to 0 0C. Trimethylsilyl diazomethane (-14 ml of a 2 M solution in ether) was added until a pale yellow colour persisted and the reaction was warmed to room temperature and quenched by the addition of excess acetic acid. It was then evaporated and the residue was partitioned between ethyl acetate and saturated sodium bicarbonate. The organic extract was dried, filtered and evaporated to yield a residue which was purified and separated into its three isomers by silica chromatography using ethyl acetate / petrol. Isomer A (least polar) (1.2 g, 5.1 mmol). 1H NMR (DMSO) delta 4.36 (2 H, q, J = 7 Hz), 4.10 (3 H, s), 1.32 (3 H, t, J=V Hz)Isomer B (medium polarity) (0.47 g, 2.0 mmol). 1H NMR (DMSO) 64.31 (2 H, q, J = 7 Hz), 3.92 (3 H, s), 1.29 (3 H, t, J = 7 Hz) Isomer C (most polar) (0.37 g, 1.6 mmol). 1H NMR (DMSO) 54.38 (2 H, q, J = 7 Hz), 3.82 (3 H, s), 1.33 (3 H, t, J = 7 Hz) Combined yield 62 %.

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 Ethyl 5-bromo-1H-1,2,4-triazole-3-carboxylate, hurry up and to see.

Reference:
Patent; PARADIGM THERAPEUTICS LTD.; WO2007/582; (2007); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics