Tag: M.W=0-100

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. 41253-21-8, name is Sodium 1,2,4-triazol-1-ide belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 41253-21-8

EXAMPLE 2; Preparation of 1,3-benezenediacetonitrile, alpha,alpha,alpha’,alpha’-tetramethyl-5-(1H-1,2,4-triazol-1-ylmethyl) (Formula I) 2 Kg of 2-[3-bromomethyl-5-cyano-dimethyl-methyl)-phenyl]-2-methyl-propionitrile and 10 L of N,N-dimethylacetamide were charged in a clean dry reactor followed by stirring for 10 minutes. 0.861 Kg of sodium triazole was charged under nitrogen pressure and the temperature raised to 57.5 C. The obtained solution was maintained for 36 hours at 57.5 C. and then cooled to about 25 C. followed by quenching the reaction by charging the solution to 30 L of water. The resultant reaction solution was extracted with 3×20 L of ethyl acetate followed by separation of organic and aqueous layers. The combined organic layer was distilled at 26.2 C. under a vacuum of -0.6 Kg/cm2 to afford a residue, the and the obtained residue was dissolved in 20 L of toluene followed by treatment with 2×2 L of 2N aqueous hydrochloric acid solution and with 2×8 L of water. The aqueous layer was separated and treated with 4×10 L of toluene and the obtained aqueous layer was charged into sodium bicarbonate solution, which was prepared by the dissolution of 4.7 Kg of sodium bicarbonate in 45 L of water. The obtained solution was stirred for 10 minutes and then extracted with 2×20 L of dichloromethane. A silica gel bed in a stainless steel column filter (2.05 cm diameter and 5.75 cm height) was prepared with 6.4 Kg of 230-400 mesh silica gel and the bed was washed with 4 L of ethyl acetate. The dichloromethane solution from above was passed through the silica gel bed and then the bed was washed with 38 L of ethyl acetate. The combined solution and washing was concentrated at 24.7 C. under a vacuum of -0.6 Kg/cm2 and cooled to 30 C. followed by dissolution of the residue in 1.4 L of isopropyl alcohol. The obtained solution was stirred for 10 minutes at 30 C. and 7 L of water were charged. The obtained suspension was stirred for 3 hours followed by filtration through a Nutsche filter and washing the obtained solid with a solution of 0.25 L of isopropyl alcohol and 1 L of water. The resultant solid was dried at 48 C. under vacuum of 690 mm Hg for 3 hours to afford 0.470 Kg of the title compound having a water content by Karl Fischer of 0.13% w/w.

If you are hungry for even more, make sure to check my other article about 41253-21-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Murki, Veerender; Palle, Venkata Raghavendra Acharyulu; Panchbhai, Pandurang Prasad; US2007/100148; (2007); 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. 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

EXAMPLE B2-(2H-l,2.3-triazol-2-v0benzoic acid (B- 1)A solution of 2-iodobenzoic acid (3.0 g, 12.09 mmol) in DMF was treated with (1.5 g, 21.7 mmol) 1,2,3-triazole, 7.08 g (21.7 mmol) CsCO3, 1 14 mg (0.60 mmol) CuI and 310 mg (2.17 mmol) trans-N,N’-dimethylcyclohexane-l,2-diamine. The mixture was heated at 120 0C for 10 min in a microwave reactor. The reaction was cooled to rt, diluted with EtOAc, and filtered through Celite. The residue was purified by gradient elution on SiO2 (0 to 10% MeOH in DCM with 0.1% AcOH) to give the faster eluting desired 2-(2H-l,2,3-triazol-2-yl)benzoyl acid, B-I . Data for IM : 1HNMR (500 MHz, DMSO-(I6) delta 13.05 (br s , IH), 8.12 (s, 2H), 7.81-7.52 (m, 4H) ppm. The undesired 2-(lH-l,2,3-triazol-2-yl)benzoic acid (B-2) eluted second.

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; MERCK & CO., INC.; WO2008/143856; (2008); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 7170-01-6, name is 3-Methyl-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 7170-01-6

To a vial charged with racemic 5-(benzofuran-2-yl)-3 – (5-bromo-6-methoxypyridin-2-yl)-5,6-dthydro-4H- 1 ,2,4-oxadiazine (110 mg, 0.28 mmol, 1.0 equiv.), 3-methyl-1H-1,2,4-triazole (47.1 mg, 0.57 mmol, 2.0 equiv.), and K3P04 (120 mg, 0.57 mmol, 2.0 equiv.) under N2 atmosphere was added degassed 4:1 PhMe:dioxane solvent mixture (2.00 mL). To a second vial charged with Pd2(dba)3 (20.8 mg, 0.02 mmol, 8.0 mol%) and Me4-di-t-BuXPhos (CAS 857356-94-6, 21.8 mg, 0.05 mmol, 16 mol%) under N2 atmosphere was added degassed 4:1 PhMe:dioxane solvent mixture (0.83 mL). This mixture was stirred for 3 minutes at 120 C to provide a dark red solution which was cooled to RT and transferred to the first vial. The reaction was degassed by bubbling with N2 for 5 minutes and then sealed. The reaction mixture was stirred at 120 C for 16 h. The reaction was cooled to RT and filtered through a pad of celite which was washed thoroughly with EtOAc. The filtrate was concentrated, and the residue was purified by normal phase chromatography on silica (0-5% MeOH / DCM) to afford 5-(Benzofuran-2-yl)-3-(6-methoxy-5-(3-methyl-1H- 1,2,4-triazol-1-yl)pyridin-2-yl)-5,6-dthydro-4H-1,2,4-oxadiazine (77.4 mg, 70%) as an off- white solid.

If you are hungry for even more, make sure to check my other article about 7170-01-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; FORUM PHARMCEUTICALS INC.; ACHARYA, Raksha; BURNETT, Duane, A.; BURSAVICH, Matthew, Gregory; COOK, Andrew, Simon; HARRISON, Bryce, Alden; MCRINER, Andrew, J.; (451 pag.)WO2016/201168; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 16681-65-5, 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, 16681-65-5, name is 1-Methyl-1H-1,2,3-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 solution of n-BuLi (0.3 mL, 0.75 mmol, 2.5 M solution in hexane) was added slowly to a solution of 1-methyl-1H-1,2,3-triazole (65.6 mg, 0.789 mmol) in THF (4 mL) at -45 C. After addition, stirring was continued for an additional 30 minutes at 40 C. and (3-((4-(1H-pyrazol-1-yl)piperidin-1-yl)methyl)-4-chloro-2-methoxyquinolin-6-yl)(1,2-dimethyl-1H-imidazol-5-yl)methanone (189 mg, 0.395 mmol, Intermediate 42) dissolved in THF (2 mL) was slowly added. An additional 1 mL of THF was used to complete the quantitative addition. The mixture was stirred at -40 C. for 5 minutes then warmed to room temperature and stirred for 1 hour. The solution was quenched with saturated aqueous NH4Cl solution. H2O was added and layers were separated. The aqueous layer was extracted with EtOAc and the combined organic extracts washed with brine, dried over MgSO4, filtered, evaporated in vacuo. The crude product was purified using flash column chromatography (0 to 7% MeOH-DCM) to provide the title compound. MS m/e 562.6 (M+H)+.

We very much hope you enjoy reading the articles and that you will join us to present your own research about 16681-65-5, Happy reading!

Reference:
Patent; JOHNSON & JOHNSON; 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.; MCCLURE, KELLY; TANIS, VIRGINIA; US2015/111870; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 16681-65-5, 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. 16681-65-5, name is 1-Methyl-1H-1,2,3-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.

l-Methyl-5-tributylstannanyl-lH-[l,2,3]triazole; To a solution of 1 -methyl- lH-[l,2,3]triazole (1.33 g, 16 mmol) in THF (20 mL) at -78 0C, was added dropwise n-BuLi (11 mL,1.6M, 18 mmol). The mixture was stirred at -78 0C for 2 h before addition of Bu3SnCl (4.75 mL, 17.6 mmol). The mixture was stirred at this temperature for 1 h and at r.t. for 1 h. The mixture was concentrated in vacuo and hexanes was added. The insoluble material was removed by filtration and the filtrate was concentrated in vacuo to afford l-methyl-5-tributylstannanyl-lH- [l,2,33triazole (6.12 g, 82% yield) as a yellow syrup.

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

Reference:
Patent; NOVARTIS AG; NOVARTIS PHARMA GMBH; WO2006/108591; (2006); A1;,
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. 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. Formula: C2H4N4

1.071 g of analytically pure dipyridinecarboxaldehyde and 0.841 g of analytically pure 4-amino-1,2,4-triazole, dissolved in 30 mL of analytical ethanol solution and heated to reflux for two hours to give the Schiff base ligand pyta. Yield 1.71 g, yield 98%.

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 4H-1,2,4-Triazol-4-amine, in my other articles.

Reference:
Patent; Guilin University of Technology; Zhang, Shuhua; Zhang, Shaonan; (7 pag.)CN106496188; (2017); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 61-82-5, 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. 61-82-5, name is 1H-1,2,4-Triazol-5-amine, molecular formula is C2H4N4, 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 mixture of dimedone (1 mmol), aldehyde (1 mmol), 2-aminobenzimidazole or 3-amino-1,2,4-triazole (1 mmol)and nano-SiO2 (15 mol %) in the acetonitrile (5 mL) was stirred for appropriate time (Table 2) at 25-30 C. After the completion of the reaction as indicated by TLC, dichloromethane (CH2Cl2) was added to the solidified mixture and the insoluble catalyst was separated by filtration. Evaporation of the solvent from the filtrate and recrystallization of the solid residue from hot ethanol afforded the pure products in high yields.

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 61-82-5.

Reference:
Article; Mousavi, Mir Rasul; Maghsoodlou, Malek Taher; Journal of the Iranian Chemical Society; vol. 12; 5; (2015); p. 743 – 749;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 1455-77-2, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 1455-77-2, name is 3,5-Diamino-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.

A mixture of Zn(NO3)2·6H2O (0.030 g, 0.1 mmol), H3btc (0.024 g, 0.1 mmol), Hdatrz (0.01 g, 0.10 mmol), NaHCO3 (0.025 g, 0.3 mmol) and H2O (10 mL) was placed in a 23 ml Teflon-lined stainless steel reactor under autogenous pressure at 160 °C for 60 h and then cooled to the room temperature slowly. Colorless prism crystals were obtained in 34percent yield based on Zn(NO3)26H2O. Anal. calcd. for C11H7N5O6Zn2 (436.00): C, 30.28; H, 1.61; N, 16.06percent. Found: C, 30.31; H, 1.58; N, 16.02percent. IR (KBr, cm?1) 3387(s), 3175(m), 1607(s), 1566(s), 1395(s), 1366(m), 1307(w), 1224(m), 1077(s), 853(w), 718(s), 688(m), 647(w).

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 3,5-Diamino-1,2,4-triazole is helpful to your research.

Reference:
Article; Cui, Penglei; Li, Xiaohui; Journal of Molecular Structure; vol. 1081; (2015); p. 182 – 186;,
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. 41253-21-8, name is Sodium 1,2,4-triazol-1-ide belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 41253-21-8

e) Preparation of 2,2′-[5-(1H-1,2,4-triazole-1-yl-methyl)-1,3-phenylene]di(2-methyl propionitrile) (1)A mixture of 2,2′-(5-bromomethyl-1,3-phenylene)di(2-methylpropionitrile) (V) (4 gm, 0.013 moles) and 1,2,4-triazole sodium salt (2.40 gm, 0.026 moles) in N,N-dimethylformamide (28 ml) was heated under stirring at 45-50 C. for 4 hour. The reaction mixture was cooled, poured into the ice-water and extracted with ethyl acetate. The ethyl acetate layer was separated and concentrated to give a residue. This residue was diluted with water, acidified with concentrated hydrochloric acid (adjusted the pH tol-2). The reaction mixture was heated at 50 C. and subsequently filtered the hot solution. The mother liquor was treated with ammonia solution at 0-5 C. (adjusted the pH to 8-9) and extracted with ethyl acetate. The ethyl acetate layer was separated and concentrated to obtain a residue (3.0 g).f) Purification of Anastrozole by Column Chromatography and CrystallizationThis residue was purified through column chromatography by using silica gel column and ethylacetate-hexane (740 ml: 950 ml) as eluent. The solid (2.0 g) obtained was recrystallized using a mixture of acetone-water (12 ml: 20 ml) or ethylacetate-hexane mixture (9 ml to 18 ml) to obtain 2,2′-[5-(1H-1,2,4-triazole-1-ylmethyl)-1,3-phenylene]di(2-methyl propionitrile) (1). [Yield: 34.0%, purity, 99.9%].

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 41253-21-8

Reference:
Patent; Radhakrishnan, Tarur Venkatasubramanian; Baban, Bhise Nandu; Govind, Sathe Dhananjay; Janardan, Chaudhari Chhayendra; Ashokkumar, Joshi Mehul; US2008/207915; (2008); 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. 7170-01-6, name is 3-Methyl-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 7170-01-6

The 5-chloro-6-methyl-pyrazolo [1,5-a] pyrimidine-3-carboxylic acid butyl 3rd (607 mg) for N, N- dimethyl formamide (39.8 ml) is added a solution of 4-methyl -1H-1, 2, 3-triazole (208 mg) and potassium carbonate (378 mg). The reaction mixture is stirred at room temperature for 2 hours, to be added, and the mixture is extracted with ethyl acetate. Extract water and saturated salt water cleaning, drying with anhydrous sodium sulfate, and the evaporation of the solvent under reduced pressure. Aid hemostasis by silica gel column chromatography purification (hexane/ethyl acetate), in order to produce the title compound (167 mg).

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-Methyl-1H-1,2,4-triazole, in my other articles.

Reference:
Patent; TAKED A PHARMACEUTICAL COMPANY LIMITED; KAWASAKI, MASANORI; MIKAMI, SATOSHI; NAKAMURA, SHINJI; NEGORO, NOBUYUKI; IKEDA, SHUHEI; ASHIZAWA, TOMOKO; MARUI, SHOGO; TANIGUCHI, TAKAHIKO; (135 pag.)TW2016/520; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics