Category: Triazoles

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. 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. Recommanded Product: 288-36-8

To a mixture of the product from Step 2 (7.9 g, 38 mmol) , Cs2CO3 (24.8 g, 76 mmol) , and CuI (2.88 g, 7.6 mmol) in DMF (200 mL) was added 2H- [1, 2, 3] triazole (5.24 g, 76 mmol) and N,N’-dimethyl-cyclohexane-1, 2-diamine (0.9 g, 6.5 mmol) and the mixture was stirred at 110 overnight. The cooled mixture was adjusted topH 12 with 1 N sodium hydroxide and extracted with EtOAc (50 mL x 3) . The aqueous layer was adjusted topH 4 with 1 N HCl and extracted with EtOAc (50 mLx4) . The extracts were dried over Na2SO4, filtered, the filtrate concentrated in vacuo, and the residue was purified by silica gel column chromatography (petroleum ether: EtOAc10: 1) to provide the title compound. LRMS m/z (M+H) 196.0 found, 196.0 required.

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; MERCK SHARP & DOHME CORP.; KUDUK, Scott D.; LIVERTON, Nigel; LUO, Yunfu; (59 pag.)WO2016/101118; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 25537-64-8, 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. 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.

The 2.0g (8.30mmol) 1- methyl-4,5-dibromo -1H-1,2,3- triazole was dissolved in 15ml of tetrahydrofuran, cooled to -10 deg.] C, was added dropwise 4.77ml (9.55mmol) 2.0 M isopropylmagnesium chloride / tetrahydrofuran solution (commercially available, concentration 2.0M), 15ml of hydrochloric acid, using 20ml methyl tertiary butyl ether, and the extract was dried over anhydrous magnesium sulfate and concentrated under reduced pressure to 5ml, it was cooled to 0-5 crystallization, filtration, 40 dried in vacuo to give 4-bromo-1-methyl -1H-1,2,3- triazole 1.55 g, yield 90%

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Reference:
Patent; The Haiya Chemical Co., Ltd.; Jiang, Yueheng; Que, Limin; Xu, Jun; Qin, Dongguang; Cai, Tong; (17 pag.)CN105585534; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 7411-23-6, 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, 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole, molecular formula is C2HBr2N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

To a solution of 3,5-dibromo-lh-l,2,4-triazole (150.0 g, 661.2 mmol) in tetrahydrofuran (1500 mL) was slowly added p-toluenesulfonic acid (17.1 g, 99.2 mmol), followed by 3,4-dihydro-2h-pyran (166.9 g, 1983.6 mmol) at 0 C. After addition, the reaction mixture was heated at 70 C for 3 h and concentrated under reduced pressure. The residue was poured into water (500 mL) and adjusted to pH = 9 by addition of saturated aqueous sodium bicarbonate. The resulting mixture was extracted with ethyl acetate (3 x 400 mL). The combined organic layers were dried over sodium sulfate and concentrated under reduce pressure. The resulting crude product was washed with methanol (2 x 50 mL), dried under reduced pressure to give crude 3,5-dibromo-l-tetrahydropyran-2-yl-l,2,4- triazole (155 g, 75%) as a white solid. XH NM (400 MHz, CDCI3) delta 5.49 – 5.46 (m, 1H), 4.12 – 3.99 (m, 1H), 3.72 – 3.61 (m, 1H), 2.38 – 2.26 (m, 1H), 2.18 – 2.07 (m, 1H), 1.98 – 1.90 (m, 1H), 1.78 – 1.60 (m, 3H).

I am very proud of our efforts over the past few months and hope to 3,5-Dibromo-1H-1,2,4-triazole help many people in the next few years.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; GENENTECH, INC.; CHEN, Huifen; HAMILTON, Gregory; PATEL, Snahel; ZHAO, Guiling; DANIELS, Blake; STIVALA, Craig; (208 pag.)WO2019/72942; (2019); 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. Application In Synthesis of 4H-1,2,4-Triazol-4-amine

3,5-bis(1-cyano-1-methylethyl) benzyl bromide obtained in Step IV (600 g, 1.965 mol) was heated with 4-amino-1,2,4-triazole (247.9 g, 2.948 mol) in isopropanol (4.5 L) for 7 to 7.5 hours at 80 C. to 85 C. The reaction mass was gradually cooled to 20 C. to 25 C. The reaction mass was stirred for 1 hour. The reaction mass was further cooled to 0 C. to 5 C., stirred for 2 hours, filtered, and washed with dichloromethane (2×500 ml). The reaction mass was sucked dry. The dried cake was further dried at 40 C. to 45 C. under vacuum to obtained 2,2′-[5-(4-amino-1,2,4-triazolium-1-ylmethyl)-1,3-phenylene]di(2-methylpropio-nitrile)bromide (497.5 g, 65.0% yield). MP-198-203 C. IR (In cm-1, KBr): 3204, 3116, 3080, 2987, 2229, 1643, 1607, 1565, 1469, 1438, 1196, 1004 H1NMR (in CDCl3,delta (ppm)]: 10.31 (1H,s),9.20 (1H,s),7.66-7.63 (3H,s),6.984 (2H,s),5.657 (2H,s),1.71 ( 12H,s). M+[309] (free base)

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; Glenmark Pharmaceuticals Limited; US2006/189670; (2006); 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. 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. Formula: C2H5N5

In a 500 mL round-bottomed flask, lH-l,2,4-triazole-3,5-diamine (1.5 g, 15.1 mmol, Eq: 1.00) and sodium methoxide 1M (33.3 ml, 16.7 mmol, Eq: 1.1) were combined with MeOH (100 ml) to give a colorless turbid solution. The reaction mixture was stirred for 4 hr and stripped to a gray solid. Suspended in 30 ml DMF and l-(chloromethyl)-4-methoxybenzene (2.42 g, 2.1 ml, 15.4 mmol, Eq: 1.02) was added. The dark brown suspension was stirred at 25C for 60 hrs under argon. The reaction was diluted with water (35 ml) and extracted with EtOAc (3 x 50 ml). The organic layers were combined, washed with H20 (1 x 25 mL), sat NaCl (1 x 50 ml), dried over Na2S04 and concentrated in vacuo to a white pasty solid. Dried under vacuum while gently heating to remove residual DMF and PMB-C1. The crude material was purified by flash chromatography (silica gel, 80g, 0percent to 10percent MeOH in DCM) to give 457 mg of desired product as a yellow solid (14percent). MS (m+1) = 220.

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 1455-77-2, and we look forward to future research findings.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; CHEN, Zhi; CHIN, Elbert; ERICKSON, Shawn David; GABRIEL, Stephen Deems; MERTZ, Eric; WEIKERT, Robert James; WO2014/135483; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 13273-53-5, New Advances in Chemical Research 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. 13273-53-5, name is 4-Bromo-1-methyl-1H-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.

A mixture of 55-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)-l4H-6-oxa-3-aza-2(2,6)- pyridina-l(3,4)-triazola-5(l,2)-benzenacyclodecaphan-4-one (200 mg, 0.43 mmol; Example 25, Step A), 4-bromo-l-methyl-lH-l,2,3-triazole (84 mg, 0.52 mmol), Pd(dppf)Cl2 (63 mg, 0.09 mmol) and K2C03 (178 mg, 1.29 mmol) in DMF/H20 (6 mL, 5/1) was stirred at 90 C for 2 h under a N2 atmosphere. After this time the reaction mixture was cooled to rt, filtered and concentrated under vacuum to give the crude product. Purification by columm chromatography on silica (petroleum ether/EtOAc, 1/1 and then DCM/MeOH, 10/1) gave the crude desired product. Further purification by HPLC (using a Phenomenex Synergi C18, 4muiotaeta 150x30mm column and using CH3CN/water (containing 0.05% HC1), from 27% to 47% as the mobile phase at a flow rate of 25 mL/min) gave the title compound (15 mg, 7%) as a white solid. 1H NMR (400 MHz, DMSO-i) delta ppm 11.27 (s, 1H), 8.81 (s, 1H), 8.55 (s, 1H), 8.42 (d, =2.4 Hz, 1H), 8.07 (t, =8.0 Hz, 1H), 8.00 – 8.02 (m, 1H), 7.91 (d, =8.0 Hz, 1H), 7.85 (d, =7.6 Hz, 1H), 7.37 (d, =8.8 Hz, 1H), 4.34 – 4.37 (m, 2H), 4.25 – 4.29 (m, 2H), 4.06 (s, 3H), 2.46 – 2.47 (m, 2H), 1.94 – 1.95 (m, 2H). MS (ESI): 439.2 [M + Na]+.

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 4-Bromo-1-methyl-1H-1,2,3-triazole.

Reference:
Patent; BIOGEN MA INC.; GONZALEZ LOPEZ DE TURISO, Felix; HIMMELBAUER, Martin; LUZZIO, Michael, J.; (233 pag.)WO2018/148204; (2018); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic. 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. Computed Properties of C3H5N3

To a mixture of 3-methyl- lH- l,2,4-triazole (330 mg, 3.97 mmol), 5-chloro-2-fluoro- benzaldehyde (425 mg, 2.68 mmol) in DMSO (5.0 mL) is added K2C03 (725 mg, 5.25 mmol). The reaction mixture is stirred at 100 C for 2 hours. The reaction mixture is allowed to cool to room temperature, diluted with CH2C12 (100 mL), and washed with H20 (75 mL x2). The organic layer is dried with Na2S04 and filtered. The filtrate is concentrated under reduced pressure and the residue is purified by silica gel flash column chromatography with 5% MeOH in EtOAc as the eluent to afford an impure mixture of 5-chloro-2-(3-methyl- l,2,4-triazol-l-yl)-benzaldehyde plus regiosiomer (270 mg).

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 7170-01-6.

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

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. 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. 16681-65-5

A solution of 1-methyl-1H-1,2,3-triazole (12.9 g, 155 mmol) in THF (260 mL) was cooled to -45 C. Maintaining a temperature of <-35 C., n-BuLi (62.1 mL, 2.5 M in hexanes, 155 mmol) was added over 10 minutes. The reaction mixture was stirred for 30 minutes with cooling to -45 C. and then treated with a sub-surface stream of CO2(g) for a period of 2 hours. After flushing the -35 C. slurry with N2(g) for 5 minutes, thionyl chloride (11.8 mL, 163 mmol) was added. The mixture was allowed to warm to room temperature with stirring over 1.25 hours. Addition of N,O-dimethylhydroxylamine hydrochloride (18.14 g, 186 mmol) and N,N-diisopropylethylamine (68.3 mL, 396 mmol) was followed by stirring for 15 hours. Aqueous sodium carbonate (500 mL, 10 wt %) was then added, and the layers were mixed and separated. The aqueous layer was washed with dichloromethane (250 mL and then 125 mL), and the combined organic layers were dried over MgSO4, filtered, and concentrated. The concentrate was taken up in ethyl acetate (225 mL), treated with MgSO4, and filtered through a pad of silica gel (115 g). The silica gel pad was washed with additional ethyl acetate (800 mL). The eluent was concentrated to dryness to provide the title compound as a yellow solid. 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 16681-65-5 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 342617-08-7, New Advances in Chemical Research in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 342617-08-7, name is 3-(3-Bromophenyl)-4H-1,2,4-triazole, molecular formula is C8H6BrN3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

B. 3-(3-(TrimethylstannyI)phenyl)-lH-l,2,4-triazole. A solution of 3-(3- bromophenyl)-lH-l,2,4-triazole (0.5 g, 2.25 mmol) in dry toluene (20 mL) was treated with hexamethylditin (0.88 g, 2.70 mmol) and tetrakis(triphenylphosphine)palladium(0) (255 mg, 0.22 mmol) in a sealed tube at 110 C for 2.5 h. The volatiles were removed under reduced pressure and the crude product was purified by biotage (0-50% ethyl acetate in hexanes) to afford the desired stannane (200 mg, 29%). MS (ESI) m/z 310.3[M+l]+.

We very much hope you enjoy reading the articles and that you will join us to present your own research about 342617-08-7, Happy reading!

Reference:
Patent; SIGNAL PHARMACEUTICALS, LLC; WO2008/51493; (2008); A2;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 288-88-0, 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, 288-88-0, name is 1H-1,2,4-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.

Example 1.17 [0636] Preparation of 1-phenyl-1H-1,2,41 triazole [0637] Operating protocol A (82 C., 48 hours) was followed using 117 mg of Chxn-Py-Al (0.4 mmoles), 336 ?l of iodobenzene (3 mmoles), 138 mg of 1,2,4-triazole (2 mmoles), 1.042 g of caesium carbonate (3.2 mmoles) and 1.2 ml of DMF. [0638] The degree of transformation and selectivity were 100% and 98% respectively. [0639] The residue obtained following treatment was purified by silica gel chromatography (eluent: hexane/dichloromethane, 100/0 to 50/50). [0640] 264 mg of a dark yellow solid was obtained in a yield of 91%. [0641] Pale yellow needles were obtained after re-crystallisation from chloroform. [0642] The compound obtained had the following formula: [CHEMMOL-00056] [0643] The characteristics were as follows: [0644] MPt: 46 C. (CHCl3) (Lit: 46-47 C. given by Micetich, R G; Spevak, P; Hall, T W; Bains, B K; Heterocycles 1985, 23, 1645-1649); [0645] H NMR/CDCl3:? 8.52 (wide s, 1H, HI), 8.04 (wide s, 1H, H2), 7.53-7.65 (m, 2H, H4,8), 7.26-7.51 (m, 3H, H5,6,7); [0646] 13C NMR/CDCl3: ? 152.55 (C1), 140.88 (C2), 139.96 (C3), 129.73 (C5 and C7), 128.15 (C6), 119.99 (C4 and C8); [0647] GC/MS: Rt=14.02 min, M/Z=145, purity=100%; [0648] Rf=0.21 (eluent: dichloromethane/ethyl acetate, 90/10). Example 1.18 [0649] Preparation of 1-phenyl-1H-[1,2,4]triazole [0650] Operating protocol A (82 C., 24 hours) was followed using 117 mg of Chxn-Py-Al (0.4 mmoles), 336 ?l of iodobenzene (3 mmoles), 138 mg of 1,2,4-triazole (2 mmoles), 1.042 g of caesium carbonate (3.2 mmoles) and 1.2 ml of DMF. [0651] The degree of transformation and selectivity were 79% and 99% respectively. [CHEMMOL-00057] Example 1.19 [0652] Preparation of 1-phenyl-1H-[1,2,4]triazole Example 1.18 was repeated, operating at 50 C. (72 hours). The degree of transformation and selectivity for 1-phenyl-1H-[1,2,4-triazole] were 75% and 99% respectively. [0653] [CHEMMOL-00058]

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 1H-1,2,4-Triazole, hurry up and to see.

Reference:
Patent; Cellier, Pascal Philippe; Cristau, Henri-Jean; Spindler, Jean-Francis; Taillefer, Marc; US2003/236413; (2003); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics