Category: Triazoles

Research speed reading in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic. 956317-36-5, name is 5-Methyl-2-(2H-1,2,3-triazol-2-yl)benzoic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Computed Properties of C10H9N3O2

5-methyl-2-(2-chloro-1,2,3-triazol-2-yl)benzoic acid (2.03 g, 10 mmol) was added to a 100 single-necked round bottom flask, dissolved in anhydrous dichloromethane (20 mL) and slowly added with thionyl chloride (15 mL, 200 mmol) and pyridine (0.15 mL, 2 mmol) and gradually warmed to reflux for 3 hours. The reaction was stopped, cooled, and the solvent was slowly evaporated under reduced pressure, and the resulting productwas used directly in the next reaction.

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 956317-36-5.

Reference:
Patent; Guangdong Dongyangguang Pharmaceutical Co., Ltd.; Dongguan Dongyangguang Pharmaceutical Research And Development Co., Ltd.; Jin Chuanfei; Du Changfeng; Zhang Yingjun; Liu Yanping; Kou Yuhui; (38 pag.)CN106986859; (2017); 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. 4923-01-7, name is 5-Methyl-4H-1,2,4-triazol-3-amine belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Product Details of 4923-01-7

Example 20A (rac)-Ethyl 7-(4-cyanophenyl)-2,5-dimethyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate Under an atmosphere of argon, ethyl 2-(4-cyanobenzylidene)-3-oxobutanoate (381 mg, 1.6 mmol) and 5-methyl-4H-1,2,4-triazole-3-amine (200 mg, 2.0 mmol, 1.3 eq.) were dissolved in DMF (4 ml), and solid sodium bicarbonate (659 mg, 7.8 mmol, 5 eq.) was added. The mixture was stirred at 65 C. for 12 h. The mixture was then filtered, and the DMF from the filtrate was distilled off under reduced pressure. The residue was purified by preparative HPLC (Gromsil C18 column, 30*250 mm; mobile phase: acetonitrile-water-0.1% TFA). After lyophilization, the product was obtained as a solid (300 mg, 46% of theory). LC-MS (Method 2): Rt=1.92 min; MS (ESIpos): m/z (%)=324.1 (100) [M+H]+; MS (ESIneg): m/z (%)=322.1 (100) [M-H]-. 1H-NMR (400 MHz, DMSO-d6): delta=1.0 (t, 3H), 2.1 (t, 3H), 2.4 (s, 3H), 3.4 (m, 2H), 6.25 (s, 1H), 7.4 (m, 2H), 7.8 (m, 2H), 10.75 (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 5-Methyl-4H-1,2,4-triazol-3-amine, in my other articles.

Reference:
Patent; BAYER SCHERING PHARMA AKTIENGESELLSCHAFT; US2012/4203; (2012); 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. 1533519-85-5, name is Methyl 2-((4-(4-cyclopropylnaphthalen-1-yl)-4H-1,2,4-triazol-3-yl)thio)acetate belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Safety of Methyl 2-((4-(4-cyclopropylnaphthalen-1-yl)-4H-1,2,4-triazol-3-yl)thio)acetate

250mL was added to the reaction flask the product of step B (4g, 0.0118mol), tetrahydrofuran (30ml), tetramethylpiperidinePyridine (TEMPO, 0.2g, 0.1eq), an oil bath at 30 ~ 32 heating and stirring to dissolve until clear. Portionwise added N- bromosuccinimideImide (NBS, 3.2g, 0.018mol, 1.5eq), temperature does not exceed 35 . Plus complete, insulation 30 ~ 32 reaction 3h.Sample testing of raw materials after the reaction was complete, heating was stopped, the ice bath to cool. Until an internal temperature of 0 ~ 5 , water portionwise sodium sulfiteThe reaction was quenched solution was extracted with ethyl acetate, dried over anhydrous sodium sulfate, filtration, spin dry, and the resulting crude intermediate C directlyUsed in the next reaction.Samples were analyzed by column chromatography (200-300 mesh silica gel, eluting with methylene chloride: methanol = 15: 1) to giveWhite solid C.

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 Methyl 2-((4-(4-cyclopropylnaphthalen-1-yl)-4H-1,2,4-triazol-3-yl)thio)acetate help many people in the next few years.

Reference:
Patent; Zhejiang Jingxin Pharmaceutical Co., Ltd.; Huang, yue; Xu, hui; Zhangyu, bin; Zheng, fei; (19 pag.)CN105399694; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 7170-01-6, 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. 7170-01-6, name is 3-Methyl-1H-1,2,4-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.

General procedure: A mixture of compound 10 (500 mg, 1.03 mmol), 4-methylpyridin-2-ol (168 mg, 1.54 mmol) and K2CO3(283 mg, 2.05 mmol) in DMF (5 mL) was stirred at 80 oC for 10 hoursand then concentrated in vacuo to remove DMF. The residue was diluted withwater and extracted with EtOAc. The organic layer was washed with brine, driedover Na2SO4, filtered and concentrated in vacuo. Theresidue was purified by column chromatography (PE : EtOAc = 1 : 1) to give theproduct of 1r (400 mg, yield: 83%).

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 3-Methyl-1H-1,2,4-triazole.

Reference:
Article; He, Shuwen; Li, Peng; Dai, Xing; McComas, Casey C.; Du, Chunyan; Wang, Ping; Lai, Zhong; Liu, Hong; Yin, Jingjun; Bulger, Paul G.; Dang, Qun; Xiao, Dong; Zorn, Nicolas; Peng, Xuanjia; Nargund, Ravi P.; Palani, Anandan; Tetrahedron Letters; vol. 55; 14; (2014); p. 2212 – 2216;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 151899-62-6, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 151899-62-6, name is 3-Iodo-1-trityl-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 17 This Example illustrates the preparation of diethyl 3(1-trityl-1,2,4-triazol-3-yl)prop-2-yne phosphonate having the structural formula (XVII). A stirred solution of 1-trityl-3-iodo-1,2,4-triazole (26.24 g, prepared as described in Example 5), propargyl alcohol (3.56 ml) and triethylamine (40 ml) in dry N,N-dimethylformamide (750 ml) was treated successively with tetrakis(triphenylphosphine)palladium (2.77 g) and cuprous iodide (1.0 g). It was stirred for four hours at room temperature under nitrogen and allowed to stand overnight but the reaction had not proceeded to completion. Stirring was continued for a further four periods of seven hours, then the mixture was poured into water (11) and extracted with chloroform (5*250 ml). The extracts were dried over magnesium sulphate, evaporated under reduced pressure and chromatographed on silica, using ethyl acetate-hexane (4:1) as eluant. Trituration with ether gave 1-hydroxy-3(1-trityl-1,2,4-triazol-3-yl)prop-2-yne (12.20 g). Recrystallisation from chloroform gave material m.p. 211 C. NMR (CDCl3): delta 4.45(2H,s), 7.1-7.3(15H,m), 7.95(1H,s).

In the meantime we’ve collected together some recent articles in this area about 3-Iodo-1-trityl-1H-1,2,4-triazole to whet your appetite. Happy reading!

Reference:
Patent; Zeneca Limited; US5393732; (1995); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route 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.

D. (2S,4R)-5-Biphenyl-4-yl-2-hydroxymethyl-2-methyl-4-[(3H-[1,2,3]triazole-4-carbon)-amino]-pentanoic acid 2-morpholin-4-yl ethyl ester (R4=H; R7=-(CH2)2-morpholine) (2S,4R)-5-Biphenyl-4-yl-4-t-butoxycarbonylamino-2-hydroxymethyl-2-methyl-pentanoic acid (300 mg, 726 mumol, 1.0 eq.), EDCI (770 muL, 6.0 eq.) and HOBt (590 mg, 4.4 mmol, 6.0 eq.) were dissolved in DCM (6 mL). After stirring for 2 minutes, 4-morpholineethanol (879 muL, 10.0 eq.) was added, and the resulting mixture was stirred for 3 hours at room temperature. The mixture was diluted with DCM and washed with saturated sodium bicarbonate. The organic layer was separated, dried and concentrated. The material was purified (reverse phase column: 5-60% MeCN in water with 0.05% TFA over 30 min; compound eluted between 35-45% MeCN in water) and the clean fractions were combined and lyophilized. MeCN (7.2 mL) and 4 M of HCl in dioxane (720 muL) were added to the lyophilized material. The resulting mixture was stirred at room temperature for 0.5 hour and then the solvent was removed to yield the intermediate. 1,2,3-Triazole-4-carboxylic acid (82 mg, 726 mumol, 1.0 eq.), HATU (280 mg, 720 mumol, 1.0 eq.) and DMF (5.8 mL) were combined and the resulting mixture was stirred for 5 minutes. DIPEA (505 muL, 4.0 eq.) and the intermediate were added, and the mixture was stirred for 30 minutes. The reaction was quenched with AcOH and the product was purified by preparative HPLC to yield the title compound (60 mg, 95% purity). MS m/z [M+H]+ calc’d for C28H35N5O5, 522.26. found 522.4.

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 1H-[1,2,3]Triazole-4-carboxylic acid.

Reference:
Patent; THERAVANCE, INC.; US2012/213806; (2012); 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. 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. Formula: C2H3N3

Bromine (2.2 mL, 43.4 mmol) was added cautiously to a solution of 1H-1,2,3- triazole (2 g, 29.0 mmol) in water (10 mL) at 40°C. The resulting mixture was stirred for 2 hrs at 40°C, then allowed to cool and stood overnight at room temperature. The precipitate was isolated by filtration, washed with water (2×10 mL), and dried in the vacuum oven to give 4,5- dibromo-lH-l,2,3-triazole as a light brown solid. (M+H 225.6; LCMS method 2).

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; 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

Application of 1533519-85-5, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 1533519-85-5, name is Methyl 2-((4-(4-cyclopropylnaphthalen-1-yl)-4H-1,2,4-triazol-3-yl)thio)acetate, 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.

Take 8.0g of the purified product of compound (4) obtained in Example 3, 64ml of tetrahydrofuran, start stirring, warm up to T=30~35C, stir until dissolved; add 6.4g NBS, stir the reaction for 3~4h, the reaction is completed, and the temperature is reduced to T 05, add 40ml of toluene, add 40ml of purified water dropwise, the temperature is controlled not to exceed 7, drop it, stir for 10min, let stand for liquid separation; the organic phase is cooled to 05, add 3% hydrogen sulfite dropwise 40ml of sodium solution, keep the temperature below 10C, drop after completion, stir for 20min, stand for liquid separation, collect organic phase; warm to 1825C with camera, add 40ml of 7% sodium bicarbonate solution, stir for 10min, stand for liquid separation , Collect the organic phase, concentrate and dry to prepare the Recinade product, and test its purity to 99.940%.

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 Methyl 2-((4-(4-cyclopropylnaphthalen-1-yl)-4H-1,2,4-triazol-3-yl)thio)acetate, hurry up and to see.

Reference:
Patent; Beijing Xinkaiyuan Pharmaceutical Technology Co., Ltd. Hainan Fen Corporation; Xia Zhongning; Wu Jin; Wang Shiwei; (10 pag.)CN111116500; (2020); A;,
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. 1533519-84-4, name is 4-(4-Cyclopropylnaphthalen-1-yl)-1H-1,2,4-triazole-5(4H)-thione belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Safety of 4-(4-Cyclopropylnaphthalen-1-yl)-1H-1,2,4-triazole-5(4H)-thione

A pressure vessel containing the compound of Formula (5) (10 g, 37.40 mmol) and methyl 3-bromopropionate (7.73 g, 44.88 mmol) in N,N-dimethylformamide (70 mL) was sealed and heated to an external temperature of 60 C. for 3 days. The reaction was then cooled to room temperature to allow for a sample of the reaction mixture to be taken for 1H-NMR analysis (91% conversion). Methyl 3-bromopropionate (97%, 1.25 g, 7.48 mmol) was charged to the vessel and the reaction was re-sealed and heated to an external temperature of 60 C. for 24 hours. Following completion of the reaction, the reaction solution was concentrated in vacuo at 35-40 C. to remove the N,N-dimethylformamide. The resulting oil residue was then dissolved in dichloromethane (100 mL) and washed with a saturated aqueous sodium bicarbonate solution (50 mL), with the organic phase being dried over anhydrous sodium sulfate and concentrated in vacuo at 30-35 C. to afford a green oil (17.07 g). The oil was purified by silica gel column chromatography (column 27 cm*6 cm), using a gradient system of ethyl acetate and heptanes (2 L, 40:60 ethyl acetate:heptanes; 1 L, 50:50 ethyl acetate:heptanes; 2 L, ethyl acetate) to afford the compound of Formula (11) (9.75 g; 67% yield from the compound of Formula (5)) as a dark oil. 1H-NMR (CDCl3, 300 MHz) delta: 0.78-0.93 (2H, m), 1.12-1.21 (2H, m), 2.42 (1H, tt, J=5.44 Hz, 8.46 Hz), 2.91 (2H, t, J=6.77 Hz), 3.47 (2H, t, J=6.86 Hz), 3.64 (3H, s), 7.30 (1H, d, J=8.25 Hz), 7.35 (2H, s), 7.57 (1H, apparent dt, J=1.02 Hz, 8.22 Hz), 7.66 (1H, apparent dt, J=1.02 Hz, 8.04 Hz), 8.30 (1H, s), 8.54 (1H, d, J=8.44 Hz).

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 4-(4-Cyclopropylnaphthalen-1-yl)-1H-1,2,4-triazole-5(4H)-thione help many people in the next few years.

Reference:
Patent; Apotex Inc.; Bodhuri, Prabhudas; Green, Melanie R. A.; Karadeolian, Avedis; Weeratunga, Gamini; Gorin, Boris; (33 pag.)US2018/258057; (2018); 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. 1455-77-2, name is 3,5-Diamino-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Quality Control of 3,5-Diamino-1,2,4-triazole

A mixture of Hdatrz (19.8mg, 0.2mmol), CH3-H2ip (18.0mg, 0.1mmol) and Co(NO3)2·6H2O (23.2mg, 0.08mmol) was dissolved in mixed H2O?C2H5OH (v:v=3:7, 10.0mL) solution, and the initial pH of the reactant mixture was adjusted to ca. 7 by slow addition of triethylamine with constant stirring. The resulting mixture was then transferred into a Teflon-lined stainless steel vessel (23.0mL) and heated at 150°C for 72h under autogenous pressure. After the mixture was cooled to room temperature at a rate of 5.2°Ch?1, blue block-shaped crystals suitable for X-ray analysis were obtained directly, washed with water and dried in air (Yield: 40percent, based on CoII salt). Anal. Calc. for C13H19Co2N10O6.5: C, 29.06; H, 3.56; N, 26.07. Found: C, 29.04; H, 3.53; N, 26.10percent. IR (KBr pellet, cm?1): 3446 (br), 3349 (w), 3244 (w), 1622 (s), 1582 (s), 1517 (s), 1380 (s), 1144 (w), 1107 (w), 1044 (w), 803 (w), 776 (m), 735 (m).

If you are hungry for even more, make sure to check my other article about 1455-77-2, the application of this compound in the production field has become more and more popular.

Reference:
Article; Zhao, Hong; Li, Hong-Xue; Liu, Zhong-Yi; Yang, En-Cui; Zhao, Xiao-Jun; Polyhedron; vol. 101; (2015); p. 29 – 36;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics