Day: July 13, 2021

Related Products 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.

Example 120: Preparation of 4,5-dibromo-lH-pi,2,31triazoleRr Br. BrN^ NH *” ‘ \V NVNH To a solution of IH-[1, 2,3]triazole (1.26 ml, 21.7 mmol) in water (10 ml) at 5tfC, was added bromine (1.5 ml, 29 mmol). The reaction mixture was stirred at 5CPC for 1.5 hours. The white solid (2.375 g) was isolated via filtration and washed with water (5 ml). To the combined filtrates was added more bromine (1.5 ml, 29 mmol). The reaction mixture was stirred at room temperature for 20 hours. More white solid (1.83 g) was isolated via filtration and washed with water (5 ml). To the combined filtrates was added more bromine (1.5 ml, 29 mmol). The reaction mixture was stirred at room temperature for 20 hours. More white solid (375 mg) was isolated via filtration and washed with water (5ml). The white solids were combined and dried to give 4,5-dibromo- IH-[1, 2,3]- triazole (4.92 g, 93percent yield). M.p. 194.7C.

In the meantime we’ve collected together some recent articles in this area about 288-36-8 to whet your appetite. Happy reading!

Reference:
Patent; SYNGENTA LIMITED; WO2007/96576; (2007); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 41253-21-8, 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, 41253-21-8, name is Sodium 1,2,4-triazol-1-ide, molecular formula is C2H2N3Na, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

A suspension of 2,5-diflurobenzonitrile (4.5 g, 32.35 mmol) and 1,2,4-triazole sodium salt (3.6 g, 40 mmol) in dimethylformamide (40 mL) was heated at 80 C. for 15 h. The reaction mixture was then cooled, diluted with CH2Cl2 (200 mL), washed with water (3×30 mL) and brine (30 mL), then dried (Na2SO4), filtered and concentrated to give a white solid which was purified by flash column chromatography (SiO2) using 1:1 to 3:1 ethyl acetate/Hexanes to afford the title compound (2.98 g, 49% yield) as a white powder. 1H NMR (500 MHz, CDCl3) ?: 8.70 (1H, s), 8.18 (1H, s), 7.76 (1H, dd, J=9.0, 4.8 Hz), 7.55 (1H, dd, J=7.3, 2.8 Hz), 7.51-7.47 (1H, m). LCMS (M+H) calcd for C9H6FN4: 189.17; found: 189.10.

We very much hope you enjoy reading the articles and that you will join us to present your own research about 41253-21-8, Happy reading!

Reference:
Patent; Naidu, B. Narasimhulu; Banville, Jacques; Beaulieu, Francis; Connolly, Timothy P.; Krystal, Mark R.; Matiskella, John D.; Ouellet, Carl; Plamondon, Serge; Remillard, Roger; Sorenson, Margaret E.; Ueda, Yasutsugu; Walker, Michael A.; US2005/267105; (2005); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 16681-67-7, New Advances in Chemical Research in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 16681-67-7, name is 4-Bromo-2-methyl-2H-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.

4H-[ l,2,4]Triazolo[4,3-a ][ l,5]benzodiazepine, 5, 6-dihydro-l,4-dimethyl-8-( 2- methyl-2H-l,2,3- triazole-4-yl)-6-(4-methylsulfonyl-phenyl) (Compound 111). A solution of 4H-[l,2,4]Triazolo[4,3-a][l,5] benzodiazepine, 5,6-dihydro-l,4-dimethyl-8-(4,4,5,5-tetramethyl- l,3,2-dioxaborolan-2-yl)-6-(4-methylsulfonyl-phenyl) (197 mg, 0.4 mmol), 4-bromo-2- methyl- 2H-l,2,3-triazole (109 mg, 0.67 mmol), tetrakis(triphenylphosphine)palladium(0) (70 mg) and potassium carbonate anhydrous (337 mg, 2.44 mmol) in tetrahydrofuran (10 mL) and water (2 mL) was reacted at 100 C for 30 minutes with microwave (pressure: 17.2 bar, equipment power : 150W). The reaction mixture was diluted with ethyl acetate (50 mL), washed by brine (20 mLx3), dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and the residue was purified by CombiFlash (silica gel, dichloromethane / methanol = 10:1) to afford 4H-[l,2,4]Triazolo[4,3-a][l,5]benzodiazepine, 5,6-dihydro-l,4-dimethyl-8-(2-methyl-2H-l,2,3- triazole-4-yl)-6-(4-methylsulfonyl-phenyl) as a white solid (40 mg, 23 %).

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-Bromo-2-methyl-2H-1,2,3-triazole, hurry up and to see.

Reference:
Patent; CONSTELLATION PHARMACEUTICALS, INC.; ALBRECHT, Brian, K.; GEHLING, Victor, S.; HEWITT, Michael, C.; TAYLOR, Alexander, M.; HARMANGE, Jean-Christophe; WO2012/151512; (2012); A2;,
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. 20725-34-2, name is 1-(4-Bromophenyl)-5-methyl-1H-1,2,3-triazole-4-carboxylic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. HPLC of Formula: C10H8BrN3O2

In a 20 mL reaction vial, l-(4-bromo-phenyl)-5-methyl-lH-[l ,2,3]triazole-4-carboxylic acid (0.67 g, 2.38 mmol), (R)-l-phenylethanol (0.29 g, 0.29 mL, 2.4 mmol) and triethylamine (0.24 g, 0.33 mL, 2.4 mmol) were combined with toluene (100 mL) to give a yellow solution and to this was added diphenylphosphorylazide (0.65 g, 0.5 mL, 2.4 mmol). The vial’s atmosphere was purged with nitrogren, sealed, heated in a dry block at 80 C for 4 h, and cooled to room temperature overnight. The reaction was diluted with EtOAc (100 mL) and washed with water (100 mL) and brine (50 mL). The aqueous layers were extracted with EtOAc (100 mL). The organic layers were combined, dried over MgS04, filtered, concentrated, dissolved in minimal DCM, and purified by flash chromatography (silica gel, 0% to 25% EtOAc in hexanes). Appropriate fractions combined, concentrated, dried from DCM / hexanes, to give [l-(4-bromo-phenyl)-5-methyl-lH-[l ,2,3]triazol-4-yl]-carbamic acid (R)-l-phenyl-ethyl ester (0.507 g, 53.2% yield) as an off-white solid. LC/MS calcd. for Ci8Hi7BrN402 (m/e) 400/402, obsd. 401/403 (M+H, ES+).

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 20725-34-2, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; GABRIEL, Stephen Deems; HAMILTON, Matthew Michael; QIAN, Yimin; SIDDURI, Achyutharao; WO2013/189865; (2013); 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.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. Recommanded Product: Sodium 1,2,4-triazol-1-ide

375g 3b was dissolved in 600mLDMF, was added to the reaction mixture of 270g of triazole sodium salt compound 4 and 1,3-dimethyl-3,4,5,6-tetrahydro-2 (1H) pyrimidinone That DMPU, heated to 100-110 C for 24 hours. The mixture was quenched with water (1.5 L) and extracted with dichloromethane (1000 ml * 2). The dichloromethane phase was washed once with saturated brine (200 mL), dried over Na2SO4 and concentrated to give a yellow oil. Obtained light yellow solid 5b, yield 55%, purity 97%.

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

Reference:
Patent; Gansu Haotian Chemical Technology Co., Ltd.; Wei Pengfei; Wang Ning; Feng Weiwei; Wang Shixiang; Zhu Yingpu; (8 pag.)CN106397417; (2017); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 3641-08-5, 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, 3641-08-5, name is 2H-1,2,4-Triazole-3-carboxamide, molecular formula is C3H4N4O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

PREPARATION 20 o CF3SO3Si(CH2CH3)3 0^Nv Jl 2,6-lutdine ^Nv Jl f /T NH2 *- f /r VSi(CH2CH3)3HN-N HN-N H1 ,2-dichloroethane500C N-(triethylsilyl)-7H-l,2,4-triazole-3-carboxamideA stirred mixture of l//-l,2,4-triazole-3-carboxamide (500 mg, 4.46 mmol) in 1,2-dichloroethane (4.46 mL) treated at room temperature with 2,6-lutidine (2.08 mL, 17.84 mmol) and triethylsilyl trifluoromethanesulfonate (3.03 mL, 13.38 mmol) and heated under a nitrogen atmosphere at 5O0C. After 4 hours of heating the reaction solution allowed to cool to room temperature and diluted with dichloromethane (25 mL), washed with water (25 mL), 0.5M hydrochloric acid (25 mL), water (25 mL), dried over MgSO4, filtered, and evaporated to solid. The solid was flash chromatographed (silica gel, 10-65% ethyl acetate:hexane) to give the product as a white solid (683 mg).1H NMR (CDCl3, 500MHz, ppm) 0.89 (q, J=8Hz, 6H, CH2), 1.03 (t, j=8 Hz, 9H, CH3), 6.77 (s, IH, NH), 8.63 (s, IH, triazole H-5).LC/MS m/z (positive ion scan) M+l= 227.20

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 2H-1,2,4-Triazole-3-carboxamide.

Reference:
Patent; MERCK SHARP & DOHME CORP.; GREENLEE, Mark, L.; WILKENING, Robert; APGAR, James; WILDONGER, Kenneth, James; MENG, Dongfang; PARKER, Dann, L.; WO2010/19203; (2010); A1;,
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. 1142927-05-6, name is 1-Methyl-1H-1,2,4-triazole-3-carbonitrile belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Formula: C4H4N4

1-methyl-3-cyano-1H-1,2,4-triazole (20 g, 185 mmol) and anhydrous methanol (500 mL) were added to 100 mL of dry three-Followed by the addition of sodium methoxide (14 g, 259 mmol) and amine chloride(14.8 g, 277.5 mmol),Stir at 5 C for 12 hThe filter,The filtrate was evaporated under reduced pressure,The residue was beaten with acetone,filter,A white solid (23.44 g, 78.8%) was obtained.

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 1142927-05-6, and we look forward to future research findings.

Reference:
Patent; Guangdong Dongyangguang Pharmaceutical Co., Ltd.; Zhang Yingjun; Liu Xinchang; Ren Qingyun; Wang Chaolei; S ·geerdeman; (50 pag.)CN103664899; (2017); B;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 184177-83-1, 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. 184177-83-1, name is 1-((2S,3S)-2-(Benzyloxy)pentan-3-yl)-4-(4-(4-(4-hydroxyphenyl)piperazin-1-yl)phenyl)-1H-1,2,4-triazol-5(4H)-one, molecular formula is C30H35N5O3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

2-[(l S2S)-l-Ethyl-2-benzyloxypropyl]-2,4-dihydro-4-[4-[4-(4-hydroxyphenyl)-l- piperozinyl] phenyl]-3H-l,2,4-triazol-3-one (1 kg) was added to the Flask along with Dimethylsulfoxide (8 lit) at room temperature and stirred for 15 min. Solution of Sodium hydroxide (0.15 kg) in Water (0.3 lit) was added at same temperature and maintained for 1 hr. ((3S,5R)-5-((lH-l,2,4-triazol-l-yl)methyl)-5-(2,4- difluorophenyl)-tetrahydrofuran-3-yl)methyl-4-methylbenzene sulfonate (1.2 kg) was added and maintained for 4-5 hrs. Water (10 lit) was added to the reaction mixture and stirred for 15 min. Ethyl acetate (7.5 lit) was added and stirred for 15 min. Aqueous layer and Ethyl acetate layer were separated and aqueous layer was extracted with Ethyl acetate (3 lit). Aqueous layer and Ethyl acetate layer were separated and total aqueous layer was washed with Water (5 lit) and stirred for 15 min. Aqueous layer and Ethyl acetate layer were separated and Ethyl acetate layer was washed with brine solution. Aqueous layer and Ethyl acetate layer were separated and Ethyl acetate layer was dried over Sodium sulfate and distilled under vacuum at below 50C. The resultant crude was treated with Isopropyl alcohol (10 lit) and heated to 75-80C, maintained for material dissolved and treated with activated Carbon (0.05 kg) and maintained for 1 hr. The material was filtered through the Hyflow bed and washed with Isopropyl alcohol (1 lit). The resultant mass was cooled to room temperature, maintained for 2 hrs, filtered the solid and washed with Isopropyl alcohol (1 lit). Yield: 1.3Kg; HPLC: 98.6%.

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-((2S,3S)-2-(Benzyloxy)pentan-3-yl)-4-(4-(4-(4-hydroxyphenyl)piperazin-1-yl)phenyl)-1H-1,2,4-triazol-5(4H)-one.

Reference:
Patent; METROCHEM API PVT LTD.; NANDEPU, Venkateswara Rao; BIJJULA, Venkata krishna Reddy; BATHINA, Satyanarayana; (44 pag.)WO2019/77627; (2019); 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. 16681-65-5, name is 1-Methyl-1H-1,2,3-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Safety of 1-Methyl-1H-1,2,3-triazole

A solution of n-butyllithium in hexanes (2.5 M, 22.5 mL, 56.3 mmol) was added dropwise by syringe to a stirring solution of 1-methyl-1H-1,2,3-triazole (5.00 g, 60.2 mmol, prepared according to PCT Int. Appl., 2008098104) in dry tetrahydrofuran (400 mL) at -55 C. The resulting off-white slurry was stirred at -45 C. for 20 minutes, whereupon a solution of 2,6-dimethyl-pyridine-3-carbaldehyde (8.33 g, 61.7 mmol) in dry tetrahydrofuran (10 mL) was added dropwise by syringe. After 5 minutes, the cooling bath was removed and the reaction mixture was allowed to slowly warm. After 45 minutes, saturated aqueous ammonium chloride solution (10 mL) and ethyl acetate (100 mL) were added. The mixture was concentrated by rotary evaporation. The residue was dissolved in ethyl acetate (300 mL). The organic solution was washed with saturated aqueous sodium chloride solution (100 mL, containing excess solid sodium chloride). The aqueous layer was extracted with ethyl acetate (2*100 mL). The organic layers were combined and the combined solution was concentrated. Ether (100 mL) was added to the residue and the mixture was sonicated for 20 minutes during which time a white solid crashed out. The solids were collected by filtration. Ether (100 mL) was added to the collected solids and the mixture sonicated a second time. After 20 minutes, the mixture was filtered and the solids were collected to provide the title compound as a fine powder.

If you are hungry for even more, make sure to check my other article about 16681-65-5, the application of this compound in the production field has become more and more popular.

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; US2015/105366; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 4928-88-5, 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. 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 15 A mixture of methyl 1,2,4-triazole-3-carboxylate (1.27 g, 0.01 mole) and beta-D-ribofuranosyl-1,2,3,5-tetraacetate (3.18 g, 0.01 mole) was melted and then 0.076 g of p-toluenesulfonic acid was added thereto. The reaction mixture was reacted for 3 hours, while maintaining the temperature of the reaction mixture at 95+-5° C. And then, the reaction mixture was crystallized with 20 ml of butanol to give 2.70 g of 1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)-1,2,4-triazole-3-carboxylic acid methyl ester (yield: 85percent).

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 Methyl 1H-1,2,4-triazole-3-carboxylate is helpful to your research.

Reference:
Patent; Lee, Tai-Au; Park, Nam-Jin; Khoo, Ja-Heouk; Lee, Byung-Cheol; US2003/120064; (2003); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics