Category: Triazoles

Synthetic Route of 74205-82-6, 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. 74205-82-6, name is (1H-1,2,4-Triazol-1-yl)methanol, molecular formula is C3H5N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

The indoline (1) (10.0 (^, 0.08311101) was added to a 11 round bottom flask, Glacial acetic acid 1001111, stirring at room temperature 0.5h, adding triazole methyl alcohol (16.61 g, 0.167 mol), and the reaction was stirred at 80 C for 3 h. TLC indicated that the reaction was complete and stopped The reaction was cooled to room temperature, 40% aqueous sodium hydroxide (100 ml) and 100 ml of methanol were added under ice-cooling, refluxed for 0.5 h at 70 C, Dichloromethane (75 mL x 3), saturated brine (150 ml x 2), dried over anhydrous sodium sulfate and concentrated to give Yellow oil 7.74 g (2), yield 46.6%

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 74205-82-6.

Reference:
Patent; Sichuan University; Wu, Yong; Guan, mei; Zhao, yinbo; Hai, Li; He, Yi; Li, Xiao Cen; (9 pag.)CN103664901; (2016); B;,
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. 22300-52-3, name is 4,5-Dibromo-2H-1,2,3-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. HPLC of Formula: C2HBr2N3

Step 2. tert-butyl 4-(4,5-dibromo-2H-l,2,3-triazol-2-yl)piperidine-l-carboxylate and tert-butyl 4-(4,5-dibromo-lH-l,2,3-triazol-l-yl)piperidine-l-carboxylate [0261] A mixture of 4,5-dibromo-2H-l,2,3-triazole (2.27 g, 10.08 mmol), tert-butyl 4- (methylsulfonyloxy)piperidine-l -carboxylate (2.79 g, 10.00 mmol), and cesium carbonate (9.75 g, 29.91 mmol) in N,N-dimethylformamide (50 mL) stirred overnight at 100 °C. The reaction mixture was cooled to room temperature, poured into water (100 mL) and extracted with ethyl acetate (2 x 100 mL). The combined organic layers were washed with brine (100 mL), dried over anhydrous sodium sulfate, filtered, and concentrated to afford a mixture of tert-butyl 4-(4,5-dibromo-2H- 1 ,2,3- triazol-2-yl)piperidine- 1 -carboxylate and tert-butyl 4-(4,5-dibromo- 1 H- 1 ,2,3-triazol- 1 -yl)piperidine- 1-carboxylate (4.00 g, 97percent) as a yellow oil. MS (ESI, pos. ion) m/z 411 , 409, 413 [M+H]+. Step 3. tert-butyl 4-(4-bromo-2H-l,2,3-triazol-2-yl)piperidine-l-carboxylate (Intermediate 19) and tert-butyl 4-(4-bromo-lH-l,2,3-triazol-l-yl)piperidine-l-carboxylate (Intermediate 20) [0262] n-Butyllithium (2.5 M in hexanes, 2.92 mL, 7.30 mmol) was added dropwise to a -78 °C solution containing a mixture of tert-butyl 4-(4,5-dibromo-2H- 1,2, 3-triazol-2-yl)piperi dine- 1- carboxylate and tert-butyl 4-(4,5-dibromo-lH-l,2,3-triazol-l-yl)piperidine-l -carboxylate (3.00 g, 7.35 mmol) in tetrahydrofuran (20 mL). The resulting solution stirred for 1 hour at -78 °C, and then the reaction mixture was poured into saturated aqueous ammonium chloride solution (20 mL). The aqueous phase was separated and extracted with ethyl acetate (3 x 20 mL), and the combined organic layers were dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum. The residue was purified via column chromatography on silica gel (eluting with 2: 1, ethyl acetate/petroleum ether) to afford tert-butyl 4-(4-bromo-2H-l,2,3-triazol-2-yl)piperidine-l- carboxylate (0. 800 g, 33percent) as a colorless oil. MS (ESI, pos. ion) m/z 331, 333[M+H]+. [0263] tert-Butyl 4-(4-bromo-lH-l ,2,3-triazol-l-yl)piperidine-l-carboxylate (0.500g, 20percent) was also obtained as a colorless oil. MS (ESI, pos. ion) m/z 331, 333 [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 4,5-Dibromo-2H-1,2,3-triazole, in my other articles.

Reference:
Patent; BAIR, Kenneth W.; HERBERTZ, Torsten; KAUFFMAN, Goss Stryker; KAYSER-BRICKER, Katherine J.; LUKE, George P.; MARTIN, Matthew W.; MILLAN, David S.; SCHILLER, Shawn E. R.; TALBOT, Adam C.; WO2015/74064; (2015); A2;,
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. 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. Recommanded Product: 6523-49-5

A cooled (0 0C) solution of 6-(cyclopropylmethyl(propyl)amino)pyrimidine-4- carboxylic acid (Intermediate 21 , 112 mg; 0.45 mmol) in DCM was treated with diisopropylethylamine (78.4 ml 0.52 mmol) and methyl chloroformate (36.2 ml 0.47 mmol). After stirring at 0 0C for 15 minutes, 4-(1 H-1 ,2,4- triazol-1-yl)aniline (Maybridge, 108 mg; 0.67 mmol) was added and the mixture stirred for 72 hours. The solvent was evaporated and the compound purified by preparative HPLC to give the title compound as a white solid.1H NMR (400MHz, CDCI3) delta 10.13 (1 H, s), 8.56 (2H, d, J = 13.9 Hz), 8.11 (1 H, s), 7.93 (2H, d, J = 8.6 Hz), 7.70 (2H, d, J = 8.6 Hz), 7.36 (1 H, s), 3.53 (4H, s), 1.75-1.65 (2H, m), 1.10 (1 H, s), 0.97 (3H, t, J = 7.4 Hz), 0.58 (2H, d, J = 7.7 Hz), 0.35-0.30 (2H, m). MS (ESI+) 378. HPLC (Condition C) Rt 3.70 min (HPLC purity 99.8%).

If you are hungry for even more, make sure to check my other article about 6523-49-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; LABORATOIRES SERONO SA; WO2009/19167; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 138479-53-5, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 138479-53-5, name is 2-[1,2,4]Triazol-1-yl-benzaldehyde, 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.

To a round bottom flask is added 4-(2-amino-4-methoxy-pyrimidin-5-yl)-N^-ieri-butyl- benzene- 1,2-diamine (118 mg, 0.411 mmol) in DMF (4 mL) and water (1 mL), followed by the addition of 2-1,2,4-triazol-l-yl-benzaldehyde (78 mg, 0.45 mmol) and oxone (51 mg, 0.443 mmol). The reaction mixture is stirred at room temperature for 4 hours. Sat. sodium thiosulfate (10 mL) is added. The reaction mixture is diluted with EtOAc. The organic layer is separated, washed with water then brine, dried with Na2S04, filtered and concentrated. The residue is loaded into a silica gel column. The column is eluted with 0- 4% 7M NH3 in MeOH/CH2Cl2. The product fractions are collected and concentrated to afford the title compound (67 mg, 37 %) as a light brown solid. LCMS (ESMS): m/z 441.73 (M++l)

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 2-[1,2,4]Triazol-1-yl-benzaldehyde.

Reference:
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; CHEN, Zhidong; HAO, Ming-Hong; LIU, Weimin; LO, Ho-Yin; LOKE, Pui Leng; MAN, Chuk, Chui; MORWICK, Tina, Marie; NEMOTO, Peter, Allen; TAKAHASHI, Hidenori; TYE, Heather; WU, Lifen; WO2011/68821; (2011); 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. 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

DMF (1.5 ml) was added to a mixture of methyl S-iodo-beta-methyl-l-pyridinecarboxylate D36 (100 mg), lH-l,2,3-triazole (49.9 mg, 0.722 mmol), (lR,2R)-N,N’-dimethyl-l,2- cyclohexanediamine (10.27 mg, 0.072 mmol), CuI (3.44 mg, 0.018 mmol) and Cs2CO3 carbonate (235 mg, 0.722 mmol) in a microwave vial. The mixture was degassed via three vacuum/nitrogen cycles then irradiated in a single mode microwave reactor to 120 0C for 20 minutes. The mixture was irradiated in a single mode microwave reactor to 120 0C for a further 40 minutes. The reaction mixture was cooled and filtered washing the solids with EtOAc. The solids were dissolved in pH = 3 buffer solution (5 ml); UPLC check of this aqueous solution showed it contained a considerable quantity of 6-methyl-3-(2H- l,2,3-triazol-2-yl)-2-pyridinecarboxylic acid. The aqueous phase was extracted repeatedly with DCM; the combined DCM extracts were diluted with MeOH (50 ml) and treated with TMS-diazomethane. The volatiles were evaporated to give a yellow residue that was purified by flash chromatography on silica gel (Biotage, SNAP 1O g column, 10 %-50 % EtOAc/Cy) to give the title compound D39 (38 mg) as a white solid. UPLC (BasicQC_POS_50-800): rt = 0.57 minutes, peak observed: 219 (M+l). C10H10N4O2 requires 218. 1H NMR (400 MHz, CDCl3) delta ppm 8.20 (d, 1 H), 7.87 (s, 2 H), 7.44 (d, 1 H), 3.94 (s, 3 H), 2.71 (s, 3 H)

If you are hungry for even more, make sure to check my other article about 288-36-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; GLAXO GROUP LIMITED; ALVARO, Giuseppe; AMANTINI, David; CASTIGLIONI, Emiliano; DI FABIO, Romano; PAVONE, Francesca; WO2010/63662; (2010); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 13273-53-5, 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. 13273-53-5, name is 4-Bromo-1-methyl-1H-1,2,3-triazole, molecular formula is C3H4BrN3, 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 tert-butyl 4-({[2-amino-5-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)pyridin-3-yl]oxy}methyl)piperidine-1 -carboxylate (I-55) (580 mg, 1 .34 mmol), 4-bromo-1 -methyl-1 /-/-1 ,2,3-triazole (260 mg, 1 .61 mmol), Cs2C03 (2 N, 1 .34 mL, 2.68 mmol) in toluene (2 mL) and EtOH (6 mL) was added Pd(PPh3)4 (30.9 mg, 0.0268 mmol). The mixture was thoroughly degassed before heating under nitrogen at 80 C for 18 hr. TLC (EtOAc) indicated the reaction was completed. The mixture was concentrated under vacuum to dryness, and the residue purified by silica gel chromatography (petroleum ether/ EtOAc = 1/1 to 0/1) to give tert-butyl 4-({[2-amino-5-(1 -methyl-1 /-/-1 ,2, 3-triazol-4-yl)pyridin-3-yl]oxy}methyl)piperidine-1 -carboxylate (I-60) (503 mg, 97%) as a white solid.

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

Reference:
Patent; PFIZER INC.; JOHNSON, Ted William; RICHARDSON, Paul Francis; COLLINS, Michael Raymond; RICHTER, Daniel Tyler; BURKE, Benjamin Joseph; GAJIWALA, Ketan; NINKOVIC, Sacha; LINTON, Maria Angelica; LE, Phuong Thi Quy; HOFFMAN, Jacqui Elizabeth; (335 pag.)WO2016/97918; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 956317-36-5, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 956317-36-5, name is 5-Methyl-2-(2H-1,2,3-triazol-2-yl)benzoic 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.

EXAMPLE B5-Fluoro-2-{r(3R,6R)-l-(2-iodo-5-methylben2oyl)-6-methylpiperidin-3-yllmethoxy}pyridine (B- To a solution of A£7 (325 mg, 1.5 mmol) in CH2CI2 (50 ml) at 0C was added diisopropylethylamine (506 mL, 2.9 mmol) followed by C-I (447 mg, 1.6 mmol, generated from A-8 by treatment with SOCI2 and catalytic DMF in CH2CI2). After warming to room temperature and stirring for 2 h, the reaction was partitioned between CH2CI2 and saturated aqueous NaHC03. The layers were separated, the aqueous was extracted again with CH2CI2, the combined organics were washed with water, dried over Na2SO4, filtered and concentrated. The crude material was purified by gradient elution on silica gel (0 to 100% EtOAc in Hex) to yield 530 mg of B1^aS a white solid. Data for B1^: LRMS m/z (M+H): 469.1.

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 5-Methyl-2-(2H-1,2,3-triazol-2-yl)benzoic acid, hurry up and to see.

Reference:
Patent; MERCK & CO., INC.; WO2008/147518; (2008); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 13423-60-4, 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. 13423-60-4, name is 1-Phenyl-1H-1,2,4-triazole, molecular formula is C8H7N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

General procedure: Solutions of 3.0 mmol of 3-methylindole (for the synthesis of 10a-d) and 4.0 mmol of 3-methylpyrrolo[2,3-b]pyridine (for thesynthesis of 19a-d), respectively, in 10 mL of dioxane or acetonewere treated under an inert atmosphere with 5.3 mmol (10a-d) or4.0 mmol (19a-d) of the imidazoles 9aed, or 5.3 mmol of 1-phenyl-1,2,4-triazole (23). Then the solutions were cooled to12-15 C and 4.4 mmol of N-bromosuccinimide (NBS) was added portionwise within 5 min. After stirring over a period of 30 min theimidazolium salts were filtered off (10aed) or precipitated by additionof a mixture of ethanol and diethyl ether (19a-d). The products were obtained as colorless to slightly yellow solids.

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

Reference:
Article; Pidlypnyi, Nazar; Wolf, Sebastian; Liu, Ming; Rissanen, Kari; Nieger, Martin; Schmidt, Andreas; Tetrahedron; vol. 70; 45; (2014); p. 8672 – 8680;,
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. 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. Formula: C2H3N3

Intermediate 77: 2,3-Dimethoxy-6-[1 ,2,3]triazol-2-yl-benzoic acid.To a 20 ml microwave vial containing 2-bromo-4,5-dimethoxybenzoic acid (3 g, 1 1 .5 mmol), copper iodide (0.04 g, 0.5 mol%), cesium carbonate (7.5 g, 23 mmol), triazole (1 .33 mL, 23 mmol) and finally (R,R)-(-)-N,N’-dimethyl-1 ,2- cyclohexanediamine ligand (0.36 mL, 2.3 mmol) was added DMF (12 mL). The resulting clumpy yellow slurry was stirred until evenly dispersed then heated to 120C for 10-20 min using a microwave. At this point the reaction mixture appeared as a blue slurry which was then diluted with 20 mL ether and 20 mL H20. The resulting solution was thoroughly stirred and transferred to a separatory funnel then the RBF was subsequently rinsed with 20 mL ether and H20 each. The aqueous layer was separated from the organic layer and acidified to pH 1 with 6 mL cone. HCI. The now brown/ lime green aqueous layer was extracted twice with EtOAc. The bright yellow organic layers were combined and dried with Na2S04 and then cone, into a yellow powder under reduced pressure which was purified by FCC (0-5% MeOH in DCM w/ 0.5% AcOH) to afford 2,3-dimethoxy-6-[1 ,2,3]triazol-2-yl-benzoic acid (60%) and 2,3- dimethoxy-6-[1 ,2,3]triazol-1 -yl-benzoic acid (20%). Data for 2,3-dimethoxy-6- [1 ,2,3]triazol-2-yl-benzoic acid, MS (ESI): mass calculated for C-11 H-1 -1 N3O4, 249.23; m/z found 250.3 [M+H]+. 1H NMR (400 MHz, CD3OD): 7.87 (s, 2H), 7.47 (s, 1 H), 7.18 (s, 1 H), 3.94 (s, 3H), 3.91 (s, 3H).

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 288-36-8, and we look forward to future research findings.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; LETAVIC, Michael; RUDOLPH, Dale, A.; SAVALL, Brad, M.; SHIREMAN, Brock, T.; SWANSON, Devin; WO2012/145581; (2012); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 16681-70-2, 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. 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.

[0625] (2S,4S)-4-Amino-5-(5′-chloro-2′-fluorobiphenyl-4-yl)-2-cyanomethylpentanoic acid ethyl ester (55 mg, 141f.tmol) was combined with 3H-[1,2,3]triazole-4-carboxylicacid (19.2 mg, 170 f.tmol), HATU (64.5 mg, 170 flillOI) andDIPEA (79 f.LL, 453 f.tmol) in DMF (2 mL) and was stirred atroom temperature for 30 minutes then concentrated in vacuo and the crude residue was purified by normal phase chromatography(0-100% EtOAc/hexanes) to yield Compound 1.55mg).

We very much hope you enjoy reading the articles and that you will join us to present your own research about 16681-70-2, Happy reading!

Reference:
Patent; THERAVANCE BIOPHARMA R&D IP, LLC; Fleury, Melissa; Beausoliel, Anne-Marie; Hughes, Adam D.; Long, Daniel D.; Wilton, Donna A.A.; US2015/210690; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics