Category: Triazoles

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

To a mixture ofthe product from step 2 (7.9 g, 38 mmol), cesium carbonate(24.830 g,76 mmol) and Cui (2.88 g, 7.6 mmol) in DMF (200 mL) were added 2H-[1,2,3]triazole (5.24g,76 mmol) and N,N’-dimethyl-cyclohexane-1,2-diamine (0.9 g, 6.5 mmol) and the mixture washeated to 110 C overnight. The cooled reaction mixture was adjusted to ~pH 12 with 1Msodium hydroxide and extracted with EtOAc (50 mL x 3). The aqueous layer was adjusted to~pH 4 with 1M HCl and extracted with EtOAc (50 mLx4). The extracts was dried over Na2S04,35 filtered, the filtrate concentrated in vacuo and the residue purified by chromatography on silica (Petroleum ether: EtOAc =10:1) to provide the title compound (4.1 g). LRMS m/z (M+H)196.0 found, 196.0 required.

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Reference:
Patent; MERCK SHARP & DOHME CORP.; BESHORE, Douglas C.; KUDUK, Scott D.; LIVERTON, Nigel; LUO, Yunfu; MENG, Na; YU, Tingting; WO2015/18029; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 288-36-8, 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, 288-36-8, name is 1H-1,2,3-Triazole, molecular formula is C2H3N3, 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, followed by the undesired regioisomer isomer, I -(2H- 1 ,2,3-triazoI-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 O0C. 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-7 as a yellow solid.

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Reference:
Patent; MERCK SHARP & DOHME CORP.; BRESLIN, Michael, J.; COLEMAN, Paul, J.; COX, Christopher, D.; SCHREIER, John, D.; WHITMAN, David, B.; WO2010/48010; (2010); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 13423-60-4, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 13423-60-4, name is 1-Phenyl-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.

EXAMPLE 112 1-phenyl-4-(ethyl)triazoliumbromide 0.220 g (0.0015 mol) 1-phenyltriazole 1 and 1 ml (1.460 g, 0.013 mol) 1-bromopropane 2 are combined in a pressure tube. The reaction mixture is stirred for 2 h at 110 C. Subsequently, it is cooled down to room temperature and the same volume of petroleum ether is added. The precipitated solid is filtered off, washed with petroleum ether, and dried in HV. M 254.13 C10H12N3Br Yield: 0.2307 g (61%) 1H-NMR DM-109 (300 MHz/DMSO): (ppm)=1.58 (t, 3H, 8-H); 4.38 (q, 2H, 7-H); 7.70 (m, 3H, 5/5’/6H); 7.95 (d, 2H, 4/4′-H); 9.53 (s, 1H, 1-H); 11.02 (s, 1H, 2-H) 13C-NMR DM-109 (75.475 MHz/DMSO):

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Reference:
Patent; TECHNISCHE UNIVERSITAET DRESDEN; US2011/105761; (2011); 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. 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. SDS of cas: 103755-58-4

General procedure: Into a round-bottom flask were added 5.71mmolof alditolyl-triazole 12 or 21a in 50ml dichloromethane, 0.9mL of pyridine (2 eq.), 5.71mmolof acyl chloride and catalytic amount of DMAP. The mixture was stirred vigorously at room temperature, and the reaction progress was monitored by thin layer chromatography. Next, the mixture was washed with distilled water (3×100mL), saturated sodium bicarbonate solution (5×100mL), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The product was purified via silica-gel column chromatography using gradient mixture of hexane-ethyl acetate, to afford the pure derivatives 13a-k and 22a-d.

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; Gonzaga, Daniel; Senger, Mario Roberto; Da Silva, Fernando De Carvalho; Ferreira, Vitor Francisco; Silva Jr., Floriano Paes; European Journal of Medicinal Chemistry; vol. 74; (2014); p. 461 – 476;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 25537-64-8, 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, 25537-64-8, name is 4,5-Dibromo-1-methyl-1,2,3-triazole, molecular formula is C3H3Br2N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Butyl lithium 1.6M in hexanes (3.89 mL, 6.23 mmol) was added dropwise over 5min to a solution of 4,5-dibromo-l-methyl-lH-l,2,3-triazole (1 g, 4.15 mmol) in THF (20 mL) at – 75 C, maintaining the temperature <-70C. The resulting mixture was then stirred for 1 hr at - 78C. DMF (1.607 mL, 20.76 mmol) was then added and the mixture stirred for 30 min before being allowed to warm to room temperature. The reaction was quenched with 1M HCl (10 mL) and extracted with ether (3x50 mL). The combined organics were washed with brine (20 mL), dried over sodium sulphate, filtered and concentrated in vacuo. Purification was by silica gel chromatography (eluted with 0-50% ethyl acetate/isohexane) to give 4-bromo-l -methyl- 1H- l,2,3-triazole-5-carbaldehyde as a white solid (M+H30 207.9; LCMS method 2). I am very proud of our efforts over the past few months and hope to 4,5-Dibromo-1-methyl-1,2,3-triazole help many people in the next few years. Reference:
Patent; IRM LLC; NOVARTIS AG; TELLEW, John Edward; WANG, Xia; WAN, Yongqin; XIE, Yun Feng; PAN, Shifeng; JIANG, Jiqing; XIE, Yongping; HUNT, Thomas Anthony; EDWARDS, Lee; BEATTIE, David; HEALY, Mark Patrick; WEST, Ryan; LISTER, Andrew Stuart; WO2012/138648; (2012); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 16681-70-2, 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. 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.

1,2,3-Triazole-4-carboxylic acid (14 mg, 124 mumol), DIPEA (86.3 muL, 496 mumol) and HATU (47.1 mg, 124 mumol) were combined in DMF (0.2 mL) and stirred for 5 minutes at room temperature. This was then combined with (2S,4R)-4-amino-5-biphenyl-4-yl-2-hydroxymethyl-2-methyl-pentanoic acid benzyloxycarbonylmethyl ester (57.2 mg, 124 mumol). The resulting mixture was stirred for 15 minutes and the reaction was quenched with AcOH. The product purified by preparative HPLC and lyophilized to yield the title compound (19 mg; purity 95%). MS m/z [M+H]+ calc’d for C31H32N4O6, 557.23. found 557.2.

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Reference:
Patent; THERAVANCE, INC.; US2012/213806; (2012); 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: 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 belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 184177-83-1

To a 100 ml three-necked flask was added 2-[(1S,2S)-1-ethyl-2-benzyloxypropyl]-2,4-dihydro-4-[4-[4-(4-hydroxyphenyl)piperazin-1-yl]phenyl]-3H-1,2,4-triazol-3-one (4.78 g) and DMSO (40 ml)Stirring dissolved, A concentration of 25 wt% aqueous NaOH (1.6 ml) was added,Mixed for 10 minutes, (5R-cis)-4-toluenesulfonic acid 5-(2,4-difluorophenyl)-5-(1H-1,2,4-triazol-1-yl)methyltetrahydrofuran-3-ylmethyl ester (4.4 g), The mixture was reacted at 30 C for about 14 h, Liquid phase monitoring to the reaction is completed, The reaction solution was poured into vigorously stirred water (240 ml) Plus, Stir again for 10min, filter, Filter cake washed with water, The filter cake was recrystallized from isopropanol to give a solid, Dried in vacuo to give an off-white powdery solid (Formula II); By NMR, mass spectrometry and infrared spectroscopy, The gray powder solid is a compound of formula II, And the purity of the compound is 99%.

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 184177-83-1.

Reference:
Patent; Hebei Guolong Pharmaceutical Co., Ltd.; Yan, Dianshu; Wei, Saili; Sun, Man; Yin, Jie; Liu, Yupu; Hu, Shuo; Wu, Yujie; (12 pag.)CN106366076; (2017); A;,
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. 4928-87-4, name is 1,2,4-Triazole-3-carboxylic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 4928-87-4

The intermediate 27a was added(0.2 g, 0.39 mmol) was dissolved in 35 ml of DMF, EDCI (0.08 g, 0.42 mmol) was added,HOBT, (0.058, 0.38 mmol) was dissolved with stirring, and then ml, 2,4-triazole-3-carboxylic acid (0.058,0.44mmo 1), DIEA 0.2ml (1.17mmo 1), stirring at room temperature for 12h, TLC detection, the end of the reaction, the liquid spin dry crude, crudeThe product was purified by silica gel G column chromatography [eluent (methanol: dichloromethane) = 50: 500 (nu: nu)] to give the title compound0 · 08g, yield 33.3%

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 4928-87-4

Reference:
Patent; Beijing Foreland Pharma Co., Ltd; Zhang, Xingmin; Wang, Ensi; Niu, Shengxiu; Guo, Jing; Dai, Zhuolin; Zheng, Nan; Ji, Qi; Li, Qinyan; Liang, Tie; (109 pag.)CN104411706; (2016); B;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 61-82-5, 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, 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: A mixture of 3-amino-1,2,4-triazole or benzimidazole (1.0 mmol), benzaldehyde (1.0 mmol), dimedone (1.0 mmol), and acetonitrile (5 mL) was taken in a round bottom flask and added iodine (10 mol %) and stirred at 80 C for 10 min. After completion of the reaction, as monitored by TLC, the reaction mass was cooled to room temperature and the solid separated was filtered and washed with water and dried at reduced pressure.Data of representative examples

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Reference:
Article; Puligoundla, Ravinder Goud; Karnakanti, Shuklachary; Bantu, Rajashaker; Nagaiah, Kommu; Kondra, Sudhakar Babu; Nagarapu, Lingaiah; Tetrahedron Letters; vol. 54; 20; (2013); p. 2480 – 2483;,
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. 288-88-0, name is 1H-1,2,4-Triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C2H3N3

j0185j Triethylamine (5.49 g, 54.30 mmol) is added to a solution of 1,2,4-triazole (3.0 g, 43.44 mmol) in DMF (50 mL) at rt. After stirring for 5 minutes, trityl chloride (12.11 g, 43.44 mmol) is added as a solid and the mixture is stirred overnight. The solvent is distilled off under reduced pressure and the crude is partitioned between dichloromethane (50 mL) and water (50 mL). The organic layer is separated and the aqueous layer is extracted with dichloromethane (3 x 50 mL). The combined organic layers are washed with water (3 x 40 mL). The organic layer is dried over Na2SO4 and concentrated under reduced pressure to afford the product 1-trytil-1H- 1,2,4-triazole (12.6 g, 93 %). n-BuLi (4.5 mL, 11.24 mmol; 2.5 M solution in hexanes) is added to a solution of 1-trityl-1H-1,2,4-triazole (3.5 g, 11.24 mmol) in THF (120 mL) at -78C and the solution is stirred for 45 mm. Bromine (1.76 g, 11.02 mmol) is added dropwise over a period of 5 minutes and the solution is stirred for 2 h allowed to warm to -20 C and quenched by adding saturated NH4C1 solution (30 mL). The reaction mixture ias diluted with water (60 mL) and dichloromethane (40 mL). The organic layer is separated and the aqueous layer is extracted with CH2C12 (4 x 50 mL).The combined organic extract was dried over Na2SO4 and the solvent evaporated under reduced pressure to afford crude which is used as such for the next step (4.2 g, 95 %). 7.09-7.16 (m, 6H), 7.27-7.40 (m, 9H), 7.86 (s, 1H).

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 1H-1,2,4-Triazole, in my other articles.

Reference:
Patent; NEWLINK GENETICS CORPORATION; KUMAR, Sanjeev; WALDO, Jesse; JAIPURI, Firoz; MAUTINO, Mario; WO2014/159248; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics