Tag: M.W:100-200

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. 3641-13-2, name is 5-Amino-4H-1,2,4-triazole-3-carboxylic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Safety of 5-Amino-4H-1,2,4-triazole-3-carboxylic acid

General procedure: A mixture of benzil (0.01 mol), aldehydes (0.01 mol), 3-amino-1,2,4-triazole-5-carboxylic acid (0.01 mol), ammonium acetate (0.01 mol) and ceric ammonium nitrate (15 mol%) as a catalyst were refluxed in ethanol (15 mL) for about 3-4 h. The progress of the reaction was monitored by TLC. After completion of reaction, the mixture was cooled to room temperature. The solid formed was filtered and dried. The crude products were recrystallized by ethanol.

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 3641-13-2

Reference:
Article; Nikalje, Anna Pratima G.; Ghodke, Mangesh S.; Kalam Khan, Firoz A.; Sangshetti, Jaiprakash N.; Chinese Chemical Letters; vol. 26; 1; (2015); p. 108 – 112;,
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. 103755-58-4, name is (1-Phenyl-1H-1,2,3-triazol-4-yl)methanol belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Formula: C9H9N3O

General procedure: A 10mL microwave tube was loaded with6a(1.4mmol), paraformaldehyde (4mmol), the appropriate alcohol (4.5mmol) and were irradiated for 20min. The internal temperature reached 150C. The alcohol excess was evaporated under reduced pressure. The residual solid product was purified by column chromatography on silica gel and eluted with an increasing polarity gradient mixture of hexane and ethyl acetate (9/1). For the product 7e was used 5mL of chloroform as solvent.

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 (1-Phenyl-1H-1,2,3-triazol-4-yl)methanol, in my other articles.

Reference:
Article; Jordao, Alessandro K.; Novais, Juliana; Leal, Bruno; Escobar, Ana C.; Dos Santos Junior, Helvecio M.; Castro, Helena C.; Ferreira, Vitor F.; European Journal of Medicinal Chemistry; vol. 63; (2013); p. 196 – 201;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 82767-64-4, 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, 82767-64-4, name is 3-Bromo-5-cyclopropyl-1H-1,2,4-triazole, molecular formula is C5H6BrN3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Example 294; cis-4-(5-Cyclopropyl-1 H-[1 ,2,4]triazol-3-yl)-4-hydroxy-1 – phenylcyclohexanecarbonitrile and trans-4-(5-cyclopropyl-1 H-[1 ,2,4]triazol-3-yl)-4- hydroxy-1-phenylcyclohexanecarbonitrile1.0 g of 3-bromo-5-cyclopropyl-1 H-[1 ,2,4]triazole was dissolved in 25 ml of anhydrous THF and 4.7 ml of a 2.7 M solution of n-butyllithium in HEP were added dropwise at -75C. The mixture was stirred at -65C to -75C for 2 h, and then a solution of 1.3 g of 4-oxo-1 -phenylcyclohexanecarbonitrile in 10 ml of anhydrous THF was added dropwise. The mixture was stirred at -65C to -75C for 1 h, subsequently warmed to room temperature and added to 100 ml of a saturated aqueous sodium hydrogencarbonate solution. The mixture was extracted three times with 50 ml each of EA. The combined organic phases were dried over magnesium sulfate and the solvent was removed in vacuo. Chromatography on reversed phase silica gel yielded 590 mg of the title compound (cis/trans mixture) as an amorphous solid. MS (ESI+): 309

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 82767-64-4.

Reference:
Patent; SANOFI-AVENTIS; WO2008/148468; (2008); 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. 6818-99-1, name is 3-Chloro-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 6818-99-1

A solution of 4-[5-(6-chloro-3-ethylsulfonyl-2-pyridyl)-4-methyl-1 ,2,4-triazol-3-yl]-6-(trifluoromethyl) pyrimidine (300 mg, 0.693 mmol) and 3-chloro-1 H-1 ,2,4-triazole (107.6 mg, 1.04 mmol) in pyridine (3 ml) unter argon was heated in the microwave at 120C for 30 minutes. After cooling, the reaction mixture was poured onto iced water (20 ml), the suspension filtered and the solid washed with cold water. This residue was dissolved in dichloromethane, dried over sodium sulfate, filtered and concentrated to dryness to afford the title compound 4-[5-[6-(3-chloro-1 ,2,4-triazol-1-yl)-3-ethylsulfonyl-2- pyridyl]-4-methyl-1 ,2,4-triazol-3-yl]-6-(trifluoromethyl)pyrimidine (compound P48) as a solid, mp 261- 263C. LCMS (method 1 ): 500/502 (M+H)+; retention time: 0.96 min. H-NMR (CDCI3, ppm) 1.38 (t, 3H), 3.72 (q, 2H), 4.14 (s, 3H), 8.25 (d, 1 H), 8.73 (d, 1 H), 8.79 (s, 1 H), 9.07 (s, 1 H), 9.48 (s, 1 H).

If you are hungry for even more, make sure to check my other article about 6818-99-1, the application of this compound in the production field has become more and more popular.

Reference:
Patent; SYNGENTA PARTICIPATIONS AG; MUEHLEBACH, Michel; JUNG, Pierre, Joseph, Marcel; EDMUNDS, Andrew; EMERY, Daniel; BUCHHOLZ, Anke; (145 pag.)WO2017/16910; (2017); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 27996-86-7, 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. 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.

General procedure: To a glass vessel suitable for sealing with Teflon cap (for microwave vials) were added 1-(chloromethyl)-4,5-dimethoxy-2-nitrobenzene (1 equiv.) [34] and benzaldehyde derivative (3 equiv.) The vessel was capped and then evacuated and backfilled with N2 (thrice-repeated process). Anhydrous DMF (3.5mL/mmol) was introduced and the solution was vigorously stirred for 20minat-20C. TDAE (1.06 equiv.) was added slowly and the mixture was stirred for one hour. Then, the reaction was stirred at room temperature overnight. After LC-MS analysis clearly showed that the chloride had been totally consumed, the reaction was hydrolyzed with water. The mixture was then extracted with ethyl acetate. The combined organic layers were washed with water and brine, dried over Na2SO4, filtered off, and concentrated under reduced pressure to afford the corresponding crude product.

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 4-[1,2,4]Triazol-1-yl-benzaldehyde is helpful to your research.

Reference:
Article; Da Costa, Laurene; Scheers, Els; Coluccia, Antonio; Rosetti, Alessia; Roche, Manon; Neyts, Johan; Terme, Thierry; Cirilli, Roberto; Mirabelli, Carmen; Silvestri, Romano; Vanelle, Patrice; European Journal of Medicinal Chemistry; vol. 140; (2017); p. 528 – 541;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 16681-70-2, 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. 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.

To a mixture of (E)-3-(4-chloro-2-((5-methyl-2 H-tetrazol-2-yl)methyl)phenyl)- 1 -(4-(pi peridi n-4- yl)piperazin-i-yl)prop-2-en-i-one, dihydrochloride salt (Example 149, step 2)(130 mg, 0.259 mmol), DIPEA (0.316 ml, 1.810 mmol) and 1H-i ,2,3-triazole-4-carboxylic acid (38.0 mg, 0.336 mmol) in DMF (1.5 ml) was added T3P, 50% solution in EtOAc (0.302 ml, 0.517mmol). The resultant mixture was stirred at room temperature over the weekend. Water (0.5 ml) was added and the solvent removed in vacuo. The residue was purified by reverse phase preparative HPLC to afford the title compound as the trifluoroacetate salt;LC-MS: Rt 0.87 mins; MS mlz 525.3 (M+H)+; Method 2minLowpHvo2

In the meantime we’ve collected together some recent articles in this area about 1H-[1,2,3]Triazole-4-carboxylic acid to whet your appetite. Happy reading!

Reference:
Patent; NOVARTIS AG; BEATTIE, David; BAETTIG, Urs; LEGRAND, Darren Mark; LISTER, Andrew Stuart; MCKENNA, Jeffrey; PEARCE, David William; SANDHAM, David Andrew; STEWARD, Oliver Ross; THOMSON, Christopher; WO2015/8230; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 4928-87-4, 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. 4928-87-4, name is 1,2,4-Triazole-3-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.

To a reaction of 1/7-1, 2, 4-triazole-3 -carboxylic acid (226 mg, 2.0 mmol) and (R)- l-(4-methoxyphenyl)ethan-l -amine (0.28 mL, 2.1 mmol) in dry DMF (10 mL) was added l-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 h, and then slowly diluted into iced water and extracted with DCM (50 mL x 2). The DCM phase was washed with ice cold water (100 mL x 2). The DCM phase was dried over anhydrous Na2S04, filtered and concentrated under reduced pressure and chromatographed on silica gel using MeOH and DCM (5:95) as eluents to get the desired amide 22 (287.1 mg, 58 % yield) as a white solid compound. -NMR (400 MHz, DMSO-de): <514.98-14.44 (m, 1H), 9.16-8.08 (m, 2H), 7.34 (d, J= 8.4 Hz, 2H), 6.88 (d, J= 8.8 Hz, 2H,), 5.18-5.04 (m, 1H), 3.73 (s, 3H), 1.48 (d, J= 7.2 Hz, 3H,) ppm. MH+ = 247.1 m/z. 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 1,2,4-Triazole-3-carboxylic acid. 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

Electric Literature of 4928-88-5, 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. 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 2 Preparation of methyl 1-(2,3,5-tri-O-Acetyl-beta-L-ribofuranosyl)-1,2,4-triazole-3-carboxylate Using a Mixture of beta/alpha-1,2,3,5-Tetra-O-acetyl-L-ribofuranose A 2 L flask was charged with 80.5 g of triazolemethylester, the above dichloromethane solution of beta/alpha-1,2,3,5-Tetra-O-acetyl-L-ribofuranose, and 37 g of acetic anhydride at ambient temperature.The mixture was distilled at atmospheric pressure (bath temperature, 90° C.).When the pot temperature reached 85° C. and the distillation became very slow, vacuum was applied (up to 30 mbar) and the distillation was continued for 40 minutes at 90° C. (bath temperature) and then for another 40 minutes at 120° C. (bath temperature, the pot temperature reached 117° C.).The vacuum was released and 843 mg of triflic acid was slowly added.After the addition the vacuum was restored and the mixture was stirred at 115+-5° C. (pot temperature) for 4 h.Upon the completion of the reaction the mixture was cooled to 70° C. and to it was added 750 ML of 2B alcohol (ethyl alcohol).When a homogeneous solution was formed the mixture was cooled to 50° C. and held until heavy precipitation formed (seeding might be necessary).The mixture was then slowly cooled to -5° C. (bath temperature) in 2 h and held for at least 2 h.The solid was filtered, washed with 100 ML of cold 2B Alcohol (ethyl alcohol), and dried under vacuum at 50° C. for 17 h to give 192.7 g (75.1percent yield from L-ribose) of methyl 1-(2,3,5-tri-O-acetyl-beta-L-ribofuranosyl)-1,2,4-triazole-3-carboxylate as an off-white solid.

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; Dong, Zhiming; Zhang, Pingsheng; US2004/34213; (2004); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 16681-70-2, New Advances in Chemical Research in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct 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.

[0427] To a stirred solution of (2S,4S)-4-amino-5-bipheny1-4-y 1-2-(3 -hydroxypropoxymethy l)pentanoic acid ethy Iester (18 mg, 47 flillOI) in DMF (0.3 mL), was added IH-1,2,3-triazole-4-carboxylic acid (5.3 mg, 47 f.tmol) and HATU (18mg, 47 f.tmol), followed by DIPEA(25 f.LL, 141 f.tmol). Themixture was stirred for 30 minutes, then concentrated underreduced pressure to yield crude Compound I, which was usedin the next step without purification.

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

Synthetic Route of 58910-25-1, 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, 58910-25-1, name is 4-Ethyl-3-methyl-1H-1,2,4-triazol-5(4H)-one, molecular formula is C5H9N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

After dissolving 4-ethyl-5-methyl-2,4-dihydro[1,2,4]triazol-3-one (CAS 58910-25-1) (2.00 g) in N,N-dimethylformamide (5 ml), sodium iodide (235 mg), sodium hydride (60% in oil) (238 mg) and (S)-(+)-epichlorhydrin (2.48 ml) were added and the mixture was stirred at room temperature for one day. Water was added to the reaction mixture, and extraction was performed with dichloromethane and ethyl acetate. The organic layer was washed with brine and dried over anhydrous magnesium sulfate. After filtration, the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography to obtain the title compound (540 mg).1H-NMR (400 MHz, CDCl3); delta 1.29 (t, J=7.2 Hz, 3H), 2.24 (s, 3H), 2.67 (dd, J=4.8, 2.8 Hz, 1H), 2.84 (t, J=4.8 Hz, 1H), 3.22-3.27 (m, 1H), 3.68 (q, J=7.2 Hz, 2H), 3.86 (dd, J=14.8, 5.6 Hz, 1H), 3.96 (dd, J=14.8, 4.4 Hz, 1H).

I am very proud of our efforts over the past few months and hope to 4-Ethyl-3-methyl-1H-1,2,4-triazol-5(4H)-one help many people in the next few years.

Reference:
Patent; Eisai R&D Management Co., Ltd.; US2009/270369; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics