Category: Triazoles

Related Products of 956317-36-5, 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, 956317-36-5, name is 5-Methyl-2-(2H-1,2,3-triazol-2-yl)benzoic acid, molecular formula is C10H9N3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

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 DCM with 0.1% AcOH) to give the faster eluting 2-(2H-l,2,3-triazol-2-yl)-5-methylbenzoic acid A-2, followed by the undesired regioisomer isomer, l-(2H-l,2,3-triazol-2-yl)-5-methylbenzoic acid. A solution of the acid (3.56 g, 17.52 mmol) in 150 mL of DCM was stirred and cooled to 00C. The solution was treated with oxalyl chloride (1.9 mL, 21.9 mmol) and DMF (68 muL, .878 mmol). The solution was slowly warmed to room temperature and stirred overnight. Solvent was concentrated and the resulting solid was azetroped with DCM and concentrated to provide A-4 as a yellow solid.

I am very proud of our efforts over the past few months and hope to 5-Methyl-2-(2H-1,2,3-triazol-2-yl)benzoic acid help many people in the next few years.

Reference:
Patent; MERCK SHARP & DOHME CORP.; COX, Christopher, D.; FLORES, Broc; SCHREIER, John, D.; WO2010/48016; (2010); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 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. COA of Formula: C2H4N4

A mixture of aldehyde (1 mmol), dimedone (1 mmol), 3-amino-1,2,4-triazole (1 mmol), and [C4(H-DABCO)2][HSO4]4 (16 mg) washeated in an oil bath (90 C) under solvent-free conditions. Aftercompletion of the reaction, as identified by TLC, using n-hexane:EtOAc (7:3) as the eluent, 10 mL of water was added and stirredfor 10 min. The catalyst was dissolved in water and the solid wasfiltered off and washed with warm EtOH, to obtain the pure targetmolecule.

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 61-82-5.

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
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. Recommanded Product: 7411-23-6

Intermediate 7 l-Benzyl-3,5-dibromo-lH-l,2,4-triazole Sodium te/t-butoxide (932 mg, 9.70 mmol) was added to a solution of 3,5-dibromo-l/-/-l,2,4- triazole (2.0 g, 8.82 mmol) in DMF (15 mL) and stirred at rt for 10 minutes. Benzyl bromide (1.15 mL, 9.70 mmol) was added and the mixture was stirred at rt overnight. Water (100 mL) was added and the mixture was extracted with EtOAc (2 x 50 mL). The organic phase was washed with brine (50 mL), dried over sodium sulfate, and concentrated to give the title compound as a liquid (2.69 g, 96%). XH NMR (400 MHz, CDCI3): delta ppm 5.30 (s, 2 H), 7.29 – 7.39 (m, 5 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 3,5-Dibromo-1H-1,2,4-triazole, in my other articles.

Reference:
Patent; ACTURUM LIFE SCIENCE AB; BESIDSKI, Yevgeni; YNGVE, Ulrika; PAULSEN, Kim; LINDE, Christian; MALMBORG, Jonas; WO2014/195322; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 3641-13-2, 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. 3641-13-2, name is 5-Amino-4H-1,2,4-triazole-3-carboxylic acid, molecular formula is C3H4N4O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Example 2 (Synthesis of Dye 12); A solution of sodium nitrite (7.59 g; 0.11 mol) in 25 ml water was added rapidly dropwise to a slurry of 3-amino-1,2,4-triazole-5-carboxylic acid (12.81 g; 0.1 mol) in 49 g concentrated HCl (37% aq.) and 100 ml water at 0-5 C. The mixture was stirred 90 minutes at 0-5 C. The resultant diazonium slurry was added rapidly dropwise during 15 minutes to a solution of N-(2- carboxyethyl)-5-aminoquinoline (21.62 g; 0.1 mol; prepared above) in 300 ml 20% aqueous sodium carbonate at 0 C and cooled in ice bath. The mixture was stirred 5 hours, slowly warming to room temperature as the ice bath melted. The pH of the slurry was adjusted to 6.0 with concentrated HCl (37% aq.). The resulting orange precipitate was filtered and then dried at 60 C (crude yield = 49.5 g). The crude product (42.9 g) was re-dissolved in 2000 ml water. Addition of solid nickel(II) acetate tetrahydrate (7.75 g; 0.031 mol) immediately afforded a bright magenta solution of Dye 12 (lambdamax = 525 nm). The dye solution was further purified by ultra-filtration prior to evaluation.

We very much hope you enjoy reading the articles and that you will join us to present your own research about 3641-13-2, Happy reading!

Reference:
Patent; LEXMARK INTERNATIONAL, INC.; EP1609823; (2005); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 16681-70-2, New Advances in Chemical Research 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. 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.

B. (2S,4S)-5-Biphenyl-4-yl-2-hydroxymethyl-4-[(3H-[1,2,3]-triazole-4-carbonyl)-amino]-pentanoic acid (R7=H) 1,2,3-Triazole-4-carboxylic acid (87.3 mg, 772 mumol, 1.5 eq.) was combined with HATU (293 mg, 772 mumol, 1.5 eq.) and DIPEA (179 muL, 2.0 eq.) and stirred for 5 minutes at room temperature in DCM (3 mL) to yield the activated acid. (2S,4S)-5-Biphenyl-4-yl-4-t-butoxycarbonylamino-2-hydroxymethyl-pentanoic acid ethyl ester (220 mg, 514 mumol, 1.0 eq.) was combined with DCM and TFA (1 mL each), and stirred at room temperature for 1 hour. The mixture was evaporated and azeotroped with toluene (2*). The activated acid was added and the resulting mixture was stirred for 2 hours. The reaction was quenched with water and extracted with DCM. The layers were separated, and the organic layer was dried and evaporated. Two-thirds of the product was purified by preparative HPLC to yield compound A (R7=-CH2CH3) (60 mg, 98% purity), MS m/z [M+H]+ calc’d for C23H26N4O4, 423.40. found 423.2. One-third of the product was hydrolyzed by adding 1 M of NaOH in water (619 muL) in THF (1 mL). The mixture was stirred at room temperature for 1 hour. The solvent was evaporated and the resulting material purified by preparative HPLC to yield compound B (R7=H) (35 mg, 99% purity), MS m/z [M+H]+ calc’d for C21H22N4O4, 395.16. found 395.2.

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-4-carboxylic acid is helpful to your research.

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

Electric Literature of 27996-86-7, New Advances in Chemical Research 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, molecular formula is C9H7N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

A mixture of 4-(1H-1,2,4-triazol-1-yl)benzaldehyde(0.025 mol) and thiosemicarbazide (0.025 mol) in ethanol(40 mL) was refluxed for 12 h. The reaction mixture wascooled and filtered. The product was crystallized fromethanol.M.p. 284.2 C.IR nu max (cm-1): 3423.65, 3257.77 (N-H stretching),3120.82 (Aromatic C-H stretching), 2987.74 (Aliphatic C-Hstretching), 1602.85, 1541.12, 1516.05, 1465.90 (C=N, C=Cstretching and N-H bending), 1438.90, 1375.25, 1357.89 (CHbending), 1276.88, 1209.37, 1151.50, 1112.93, 1043.49(C-N, C=S stretching and aromatic C-H in plane bending),979.84, 958.62, 945.12, 891.11, 871.82, 829.39, 804.32,671.23, 605.65 (Aromatic C-H out of plane bending).1H NMR (400 MHz, DMSO-d6) delta (ppm): 7.89 (d, J= 9.2Hz, 2H), 7.99 (d, J= 8.4 Hz, 2H), 8.08 (d, J= 15.6 Hz, 2H),8.25 (s, 2H), 9.37 (s, 1H), 11.51 (s, 1H).MS (ESI) (m/z): (M+H)+ 247Anal. Calcd for C10H10N6S: C, 48.77; H, 4.09; N, 34.12.Found: C, 48.74; H, 4.11; N, 34.13.

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 4-[1,2,4]Triazol-1-yl-benzaldehyde, hurry up and to see.

Reference:
Article; Ciftci, Guel?en Akalin; Altintop, Mehlika Dilek; Temel, Halide Edip; Oezdemir, Ahmet; Kaplancikli, Zafer Asim; Letters in drug design and discovery; vol. 14; 5; (2017); p. 554 – 566;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 7343-33-1, 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. 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.

Method 1: Diacetoxycopper (2.30 g, 12.7 mmol), 3,5-difluorophenyl-boronic acid (1.60 g, 10.1 mmol), 3-bromo-1H-1,2,4-triazole (1.25 g, 8.4 mmol) and 4A molecular sieve (150mg) were mixed in DCM (50 mL), and pyridine (1.3 mL, 16.90 mmol) was added. The mixture was stined at RT under air for 3 days. LCMS showed that no starting material remained and desired product was formed. The reaction was filtered through a plug of Celite via suction and the solid was washed with additional DCM (200m1). The combined organic layer was washed with 0.1 N aqueous HC1 three times (50 ml x 3) and brine (200 ml). The organic layer was concentrated and purified on silica gel (120 g column, dry loading method on Celite) using 10-90percent EtOAc:Hexanes to afford 1.23 g (50percent) of desired product JW-lc. ?H NMR (400 MHz, DMSO-d6) oe 9.40 (s, 1H), 7.78 – 7.61 (m, 2H), 7.41 (tt, J = 9.3, 2.3 Hz, 1H) ppm. ESI-MS m/z calc. 258.95566, found 260.05 (M+1)+; Retention time: 0.8 minutes.

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-Bromo-1H-1,2,4-triazole.

Reference:
Patent; VERTEX PHARMACEUTICALS INCORPORATED; DAVIES, Robert, J.; CAO, Jingrong; COCKERILL, Meghan, Elise; COLLIER, Philip, Noel; DENINNO, Michael, Paul; DOYLE, Elisabeth; FRANTZ, James, Daniel; GAO, Huai; GOLDMAN, Brian, Anthony; GREY, Ronald, Lee; GRILLOT, Anne-laure; GU, Wenxin; HENDERSON, James, A.; IRARRAZAVAL, Raul Eduardo, Krauss; KOLPAK, Adrianne, Lynn; LIAO, Yusheng; MAGAVI, Sanjay Shivayogi; MALTAIS, Francois; MESSERSMITH, David; PIERCE, Albert, Charles; PEROLA, Emanuele; RYU, Elizabeth Jin-Sun; SYKEN, Joshua; WANG, Jian; (706 pag.)WO2016/197009; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 7170-01-6, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 7170-01-6, name is 3-Methyl-1H-1,2,4-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.

[0907] A suspension of 6-bromo-7 -( dimethoxymethyl)-1,2,3,4-tetrahydro-1 ,8-naphthyridine (intermediate 12) (300mg, 1.045 mmol), 3-methyl-lH-1,2,4-triazole (104 mg,1.254 mmol), Cs2C03 (720 mg, 2.210 mmol) and Cui ( 40 mg,0.210 mmol) in DMF (2 ml) was heated to 120 C. forapproximately 6 h. The reaction mixture was diluted withethyl acetate and water, layers were separated and the aqueouslayer was extracted with ethyl acetate (3x). Organic layerswere combined, washed with water and brine, dried usingNa2S04 , filtered, evaporated. The crude product was purifiedby silica gel colunm chromatography eluting with a gradientof MeOH (1-10%) in DCM. Product fractions were combined,evaporated and dried to yield the title compound as anorange resin. (UPLC-MS 3) tR 0.57 min; ESI-MS 290.1[M+H]+. 1HNMR(400MHz, CDCI3 ) o8.21 (s, lH), 7.21 (s,lH), 5.35 (s, lH), 4.95 (s, lH), 3.51-3.41 (m, 2H), 3.36 (s,6H), 2.75 (t, 2H), 2.47 (s, 3H), 1.97-1.86 (m, 2H).

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; Novartis AG; Buschmann, Nicole; Fairhurst, Robin Alec; Furet, Pascal; Knoepfel, Thomas; Leblanc, Catherine; Liao, Lv; Mah, Robert; Nimsgern, Pierre; Ripoche, Sebastien; Xiong, Jing; Han, Bo; Wang, Can; Zhao, Xianglin; US2015/119385; (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.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. Recommanded Product: 584-13-4

5-(4H-l,2,4-TriazoI”4’ylamino)biphenyl-2-carbonitrile (CAB06022)To a solution of 4-amino-4JY-l ,2,4-triazole (3.29 g, 39.14 mmol) in DMSO (40 mL) was added KOtBu (4.39 g, 39, 14 mmol). The mixture was stirred for 0.5 hours at room temperature before CABTheta6020 (3.86 g, 19.57 mmol) was added and stirring was continued for 1 hour. The mixture was poured into crushed ice and neutralised with 2MKHSO4-solution, The white precipitate was filtered off, washed with water and iecrystalised from 2-propanol to give CAB06022 (3.62 g, 71%) as light yellow crystals. Mp. 181-182 0C; 1H NMR (400 MHz5 OMSO-d6) delta 6,51 (d, J = 2.5 Hz, IH), 6,60 (dd, J = 8.5, 2.5 Hz, IH), 7.42-7,58 (m, 5H), 7,81 (d, J = 8.5 Hz, IH), 8.89 (s, 2H), 10.34 (s, IH); 13C NMR (100,6 MHz, DMSO^) delta 101.3, 111.4, 1 12.6, 119.0, 128.4, 128.8, 128.9, 135.7, 137.8, 144.1, 146,4, 150.9; LRMS (ES+): m/z 262.0 (100%, [M+H]+); HRMS (ES+) calcd for Ci5HnN5 [M+Hf: 262,1087, found 262.1080.

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

Reference:
Patent; STERIX LIMITED; WOO, Lok Wai Lawrence; BUBERT, Christian; WOOD, Paul Michael; PUTEY, Aurelien; PUROHIT, Atul; POTTER, Barry Victor Lloyd; WO2011/23989; (2011); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 6818-99-1, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 6818-99-1, name is 3-Chloro-1,2,4-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.

Under an atmosphere of argon, (2S,4R)-N-(1-cyanocyclopropyl)-4-(4-fluoro-2- methyiphenylsulfonyl)- 1 -(1 -(trifluoromethyl)cyclopropanecarbonyl)pyrrolidine-2- carboxamide (example 19, step b, 0.2 g, 410 imol) was combined with N,Ndimethylacetamide (8.00 mL) to give a colorless suspension. 3-Chloro-1H-1,2,4-triazole (86.7 mg, 821 imol) and cesium carbonate (267 mg, 821 imol) were added. The reactionmixture was stirred over 5 days and was subsequently heated to 140C for 30 mm in a microwave oven. The reaction mixture was then poured into water (40 mL) and extracted with ethyl acetate (2 x 40 mL). The crude material was purified by preparative HPLC and obtained as a light yellow, viscuous oil (12 mg, 5.1%). mlz = 571.11 [M+H41.:_The title compound was obtained as a by-product in the preparation of example 66 and was obtained as a light yellow viscous oil (13.9 mg, 5.9%, stereochemistry assigned byNOESY-NMR). mlz = 571.1137 [M+H?i.

In the meantime we’ve collected together some recent articles in this area about 6818-99-1 to whet your appetite. Happy reading!

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; HAAP, Wolfgang; KUHN, Bernd; LUEBBERS, Thomas; PETERS, Jens-Uwe; (93 pag.)WO2017/144483; (2017); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics