Category: Triazoles

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. 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. Safety of 1H-1,2,3-Triazole

A mixture of 2,3-dichloro-5-nitropyridine (50 g, 259.08 mmol), 1H-1,2,3-triazole (19.683 g, 284.99 mmol), potassium carbonate (46.549 g, 336.81 mmol) and CH3CN (200 mL) was heated to 40 C. and stirred overnight. Ethyl acetate (500 mL) was added. The mixture was washed with water (500 mL*2) and brine (500 mL), dried over anhydrous Na2SO4, filtered, and concentrated to dryness under reduced pressure. The residue was triturated with DCM (100 mL), filtered, and the solid was collected to afford compound INT2A (40 g, 68%) as an off-white solid. LC-MS: (ES, m/z): [M+1]+ 225.9. 1H NMR (400 MHz, DMSO-d6) delta ppm 9.40 (d, J=2.0 Hz, 1H), 9.15 (d, J=2.0 Hz, 1H), 8.33 (s, 2H).

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1H-1,2,3-Triazole help many people in the next few years.

Reference:
Patent; Janssen Pharmaceutica NV; Lu, Tianbao; Connolly, Peter J.; Cummings, Maxwell David; Barbay, Joseph Kent; Kreutter, Kevin D.; Wu, Tongfei; Diels, Gaston Stanislas Marcella; Thuring, Jan Willem; Philippar, Ulrike; Edwards, James Patrick; Shen, Fang; (202 pag.)US2019/381019; (2019); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 1001401-62-2, 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. 1001401-62-2, name is 2-(2H-1,2,3-Triazol-2-yl)benzoic acid, molecular formula is C9H7N3O2, 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 [6-(hexahydro-pyrrolo[3,4-c]pyrrol-2-yl)-2-trifluoromethyl-pyrimidin- 4-yl]-dimethyl-amine (50 mg, 0.17 mmol), 2-[1 ,2,3]triazol-2-yl-benzoic acid (34.5 mg, 0.18 mmol), HATU (94.6 mg, 0.25 mmol) and DIPEA (0.09 mL, 0.50 mmol) in DMF (4.0 mL) was stirred at room temperature for 30 minutes. The reaction mixture was diluted with ethyl acetate (60.0 mL) and washed with water (2 X 100 mL). The organic phase was dried (Na2SO4), filtered and concentrated to dryness. The crude product was purified using Agilent HPLC (Basic system) to yield pure title compound (34.0 mg, 43.4 %). MS (ESI) mass calcd. for C22H23F3N8O, 472.47; m/z found 473.2 [M+H]+ 1 H NMR (CDCI3): 7.98 (d, J = 8.1 , 1 H), 7.70-7.69 (m, 2H), 7.56-7.49 (m, 1 H), 7.45-7.37 (m, 2H), 5.20- 5.10 (m, 1 H), 3.90-3.66 (m, 4H), 3.60-3.28 (m, 4H), 3.08 (s, 6H), 3.02-2.89 (m, 2H).

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-(2H-1,2,3-Triazol-2-yl)benzoic acid.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; CHAI, Wenying; LETAVIC, Michael, A.; LY, Kiev, S.; PIPPEL, Daniel, J.; RUDOLPH, Dale, A.; SAPPEY, Kathleen, C.; SAVALL, Brad, M.; SHAH, Chandravadan, R.; SHIREMAN, Brock, T.; SOYODE-JOHNSON, Akinola; STOCKING, Emily, M.; SWANSON, Devin, M.; WO2011/50198; (2011); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 815588-93-3, 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, 815588-93-3, name is 1-Methyl-1H-1,2,4-triazole-5-carboxylic acid, 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.

A mixture of ieri-butyl 6-amino-2-(2-(difluoromethyl)phenyl)-1 H-indole-1 -carboxylate (int 8) (358 mg, 1.00 mmol), 1 -methyl-1 H-1 ,2,4-triazole-5-carboxylic acid (454 mg, 2.00 mmol), HATU (570 mg, 1.50 mmol) and TEA (202 mg, 2.00 mmol) in DMF (4 m_) was stirred at rt overnight. Water (10 ml_) was added and the mixture was extracted with EtOAc (2 x 15 ml_). The combined organic layers were dried over MgS04, filtered and concentrated to dryness. The residue was purified by silica gel chromatography (gradient 30- 00 percent EtOAc in PE) to give the title compound as a yellow oil.

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-1,2,4-triazole-5-carboxylic acid.

Reference:
Patent; PHENEX PHARMACEUTICALS AG; DEUSCHLE, UIrich; STEENECK, Christoph; ALBERS, Michael; HOFFMANN, Thomas; (62 pag.)WO2018/153893; (2018); 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. 16681-70-2, name is 1H-[1,2,3]Triazole-4-carboxylic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. COA of Formula: C3H3N3O2

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 acetoxymethyl ester (47.8 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 (3 mg; purity 95%). MS m/z [M+H]+ calc’d for C25H28N4O6, 481.20. found 481.2.

If you are hungry for even more, make sure to check my other article about 16681-70-2, the application of this compound in the production field has become more and more popular.

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: 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. category: Triazoles

A suspension of 2-fluoro-6-iodobenzoic acid (300 mg, 1 .1 mmol), (1 R,2R)-N,N- dimethylcyclohexane-1 ,2-diamine (32 mg, 0.23 mmol), Cs2C03 (735 mg, 2.3 mmol), 1 H- 1 ,2,3-triazole (0.13 mL, 2.3 mmol), water (0.01 mL) in 1 ,4-dioxane (5 mL) was degassed under nitrogen for 10 mins. Cul (10.7 mg, 0.06 mmol) was added and the mixture was further degassed under nitrogen for 10 mins. The pressure tube was sealed and the mixture was heated to 100 for 18 hrs. After cooling, the reaction mixture was quenched with 13%wt NaCI in 2.5M hydrochloric acid (50 mL) and extracted with EtOAc. The combined organics were dried over MgSO4, filtered and concentrated in vacuo. The crude product was purified by chromatography on the Biotage Isolera Four (25 g column, 0 to 75% (10% AcOH in EtOAc) in heptane) to afford the title compound as an oil (140 mg). 1H NMR (250 MHz, MeOD) 7.94 (s, 2 H), 7.80 (m, 1 H), 7.62 (m, 1 H), 7.29 (m, 1 H).

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 288-36-8.

Reference:
Patent; C4X DISCOVERY LIMITED; BLANEY, Emma Louise; MARTIN, Barrie Phillip; NOWAK, Thorsten; WATSON, Martin John; (212 pag.)WO2016/34882; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 6523-49-5, 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. 6523-49-5, name is 4-(1,2,4-Triazol-1-yl)aniline, molecular formula is C8H8N4, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

Example B3; Preparation of (compound 3); Reaction under Argon flow. Dry DMSO (0.5 ml) was added to a mixture of intermediate 5 (0.000428 mol) and 4-(lH-l,2,4-triazol-l-yl)-benzenamine (0.000642 mol). The reaction mixture was stirred for 6 hours at 100 C on an oil-bath (no result; only starting material). Cs2CO3 (0.227 g, 1.5 equiv) was added and the reaction mixture was stirred for 3 hours at 100 0C. This mixture was extracted with a mixture of EtOAc/NaHCO3/H2O/NaCl. The extract’s solvent was evaporated. The residue (0.172 g) was washed with diethyl ether, a mixture of diethyl ether/DCM, then purified by EPO column chromatography over silica gel (eluent: toluene/2-propanone gradient). The product fractions were collected and the solvent was evaporated, yielding 0.024 g of compound 3, melting point 222.5-224 0C.

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)aniline is helpful to your research.

Reference:
Patent; JANSSEN PHARMACEUTICA N.V.; WO2006/74984; (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. 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. 288-88-0

EXAMPLE 108 1-phenyltriazole 1 g (0.0145 mol) triazole 2, 0.21 g (0.00145 mol) copper(I)oxide, 0.29 g (0.00145 mol) phenantroline monohydrate and 6.01 g (0.044 mol) potassium carbonate are weighed into a Schlenk flask. After repeated evacuating and flushing with argon, 10 ml dry DMF is added. Evacuating and flushing with argon are repeated several times. Subsequently, 2.42 ml (4.43 g, 0.022 mol) of iodobenzene is added. The reaction mixture is stirred for 48 h at 100 C. under argon. After cooling 20 ml DCM is added and filtered. The solvent is removed in vacuum and the product is obtained after purification by column chromatography (KG 60, gradient petroleum ether/EtOAc 8:2 to EtOAc) as a yellowish-white solid.M 145.17 C8H7N3 Yield: 1.362 g (65%)1H-NMR DM-94 (300 MHz/DMSO): (ppm)=7.41 (t, 1H, 6-H); 7.58 (t, 2H, 5/5′-H); 7.87 (d, 2H, 4-H); 8.25 (s, 1H, 1-H); 9.31 (s, 1H, 2-H)13C-NMR DM-94 (75.475 MHz/DMSO): (ppm)=119.37 (5/5′-C); 127.78 (6-C); 129.77 (4/4′-C); 136.74 (3-C); 142.27 (2-C); 152.39 (1-C)

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; 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. 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. category: Triazoles

Intermediate 18: 1-Methyl-1H-1,2,3-triazole-5-carbaldehydeThe title compound was prepared according to the patent application WO2008/135826. To a 50 mL 2-necked flask containing 1-methyl-1H-1,2,3-triazole (1.0 g, 12.0 mmol, prepared according to PCT Int. AppL 2008098104) was added THF (45 mL) and the colorless solution was cooled to -40 C. Then, n-BuLi (2.5 M in hexanes, 4.8 mL, 12.0 mmol) was added dropwise which afforded a dark reddish-brown viscous solution. The mixture was stirred between -30 to -20 C for 45 minutes, then neat DMF (3 mL, 38,5 mmol) was introduced at -10 C. The mixture was allowed to warm up to room temperature and stirred for 60 minutes, followed by pouring into water. The aqueous portion was extracted with EtOAc (4 x 50 mL) and the combined organics were washed with brine, dried over MgSO4, filtered and concentrated. The aqueous portion was back- extracted with DCM (3 x 50 mL) and dried as above. The combined organics were concentrated to give a light brown oil that was much more UV active than the starting material, TLC in either 25% CH3CN-DCM or 25% EtOAc-DCM showed the product to have a slightly higher Rf than the starting material. Chromatography on silica gel (100% DCM increasing to 25% CH3CN-DCM) provided the title compound as a colorless oil.

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-Methyl-1H-1,2,3-triazole, in my other articles.

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.; WO2015/57206; (2015); 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. 7343-33-1, name is 5-Bromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 7343-33-1

2- [6-Chloro-3- (ethanesulfonyl) pyridin-2-yl] -3-methyl-6- (trifluoromethyl)-3H-imidazo [4,5-b] 300mg, potassium carbonate 133 mg, and to a mixture of 3 mL of DMF, was added 3-bromo-1H-1,2,4-triazole 132mg under ice-cooling. After the mixture was stirred under ice-cooling for 2.5 hours, a saturated aqueous solution layer was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with water, and saturated brine, and dried with anhydrous sodium sulfate. The resulting organic layer was dried under reduced pressure. The resulting residue was subjected to silica gel chromatography to obtain 370mg of the compound of the present invention beta3 referred to below.

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 7343-33-1

Reference:
Patent; SUMITOMO CHEMICAL COMPANY LIMITED; NAKAJIMA, YUJI; OKAWARA, YUICHI; (263 pag.)JP2016/102104; (2016); A;,
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. 138479-53-5, name is 2-[1,2,4]Triazol-1-yl-benzaldehyde belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 138479-53-5

Example 19: {2-Amino-5-[l-tert-butyl-2-(2-l,2,4-triazol-l-yl-phenyl)-lH- benzimidazol-5-yl]-pyridin-3-yl}-methanol To a solution of [2-amino-5-(3-amino-4-ieri-butylamino-phenyl)-pyridin-3-yl] -methanol (100 mg, 0.35 mmol) in DMF (5 mL) is added 2-[l,2,4]-triazol-l-yl-benzaldehyde (73 mg, 0.42 mmol) at room temperature. Oxone (215 mg, 0.35 mmol) in H20 (1 mL) is added and the solution is stirred for 4 hours. Saturated sodium thiosulfate solution (5 mL) is added and the mixture is extracted with EtOAc (3 x 10 mL) and H20 (10 mL). The combined organic layer is dried with MgS04 and is filtered. The filtrate is concentrated and the residue is purified by silica gel flash column chromatography eluting with 10% MeOH in CH2C12 to afford the title compound (16 mg, 10%) as a pale brown foam. LCMS (ESMS): m/z 440.20 (M++l)

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 2-[1,2,4]Triazol-1-yl-benzaldehyde, in my other articles.

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