Tag: M.W=0-100

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. 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

EXAMPLE 102 [2-Chloro-4-(3-methyl-1,2,4-triazol-1-yl)-phenyl](5H,11H-pyrrolo[2,1-c]-[1,4]benzodiazepin-10-yl)-methanone To a suspension of 60% sodium hydride in oil (0.3 g) in dimethylformamide (50 ml) was added dropwise 3-methyl-1,2,4-triazole (0.45 g).. After hydrogen gas evolution ceased, 2-chloro-4-fluorophenyl-(5H,11H-pyrrolo[2,1-c][1,4]benzodiazepine-10-yl)-methanone (1.70 g) was added and the reaction mixture was heated in a sand bath at 110 C for 18 hours.. The mixture was poured onto ice, diluted with brine, and extracted with dichloromethane.. The combined extracts were dried over anhydrous sodium sulfate and filtered through a short column of anhydrous sodium magnesium silicate.. The solution was concentrated in vacuo and the residue was triturated with diethyl ether to give 1.25 g of the title compound as colorless crystals, m.p. 191-193 C, MS m/z: 404.1 (M+H)+.

If you are hungry for even more, make sure to check my other article about 7170-01-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Wyeth; EP1000062; (2004); B1;,
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. 288-36-8, 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

2H-1,2,3-triazole (3.45 g, 50 mmol),2-iodo-5-methylbenzoic acid (5.24 g, 20 mmol)Cesium carbonate (11.72 g, 36 mmol),Trans-N, N’-dimethyl-1,2-cyclohexanediamine (0.51 g, 3.6 mmol)Cuprous iodide (0.38 g, 2 mmol),N, N-dimethylformamide (30 mL) were successively added to a 100 mL single-necked round bottom flask,Under the protection of nitrogen gradually heated to 100 ,Reaction for 4 hours.Stop the reaction,cool down,Diluted with tap water and extracted with ethyl acetate (200 mL x 2).The aqueous layer was acidified with concentrated hydrochloric acid to pH = 1 to 2 and extracted with ethyl acetate (200 mL x 2)The combined organic layers were combined and dried over anhydrous sodium sulphate,filter,The filtrate was evaporated under reduced pressure and purified by column chromatography (dichloromethane / methanol (v / v) = 50 / 1) to afford the title compound (yellow solid, 2.76 g, 68%).

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-1,2,3-Triazole, in my other articles.

Reference:
Patent; Guangdong HEC Pharmaceutical Co., Ltd.; Jin, Chuanfei; Gao, Jinheng; Zhang, Yingjun; (39 pag.)CN106243052; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 584-13-4, 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. 584-13-4, name is 4H-1,2,4-Triazol-4-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.

REFERENTIAL EXAMPLE 2 STR7 2.52 Grams of 4-amino-1,2,4-triazole was added little by little to a dimethylsulfoxide suspension of 1.2 g of sodium hydride at room temperature. After stirred for 3 hours at room temperature, 1.21 g of 4-fluorobenzonitrile was added thereto all at a time, and stirring was continued for further one hour. Water was added to the reaction solution, and the mixture was then extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate, and the solvent was removed by distillation under reduced pressure. The crystals obtained were washed with ethyl acetate to give 1.09 g of 4-[(4-cyanophenyl)amino]-4H-1,2,4-triazole. Nuclear Magnetic Resonance Spectrum (DMSO-d6, TMS internal standard) delta: 6.57 (2H, d, J=9 Hz), 7.69 (2H, d, J=9 Hz), 8.83 (2H, s) Mass Spectrometry (m/z): 185 (M+)

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 4H-1,2,4-Triazol-4-amine is helpful to your research.

Reference:
Patent; Yamanouchi Pharmaceutical Co., Ltd.; US5674886; (1997); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 288-36-8, New Advances in Chemical Research in 2021.In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. 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.

To a so?ution of 2-choro-5-nitro-3-(trifluoromethy)pyridine (1 .0 g, 4.41 mmo) and K2CQ3 (1.22 g, 883 mmo) in THF (5 m) was added 2H-l ,2,3-triazoe (0.31 m, 5.30 mmo). The reaction mixture was stirred for lh at RT. Water was added and the mixture was extracted with AcOEt. The organic ayer was washed with brine, dried over Na2SO4, fHtered and concentrated under vacuum. The residue was purified by flash co?umn chromatography on sHica ge (cycohexane/AcOEt: 100/0 to 50/50) to afford 5-nitro-2- (2H-1 ,2,3-triazo-2-y 3-(trifluoromethy)pyridine. Miz = 260 [M+H]+, Rt = 0.88 mm (UPLC Method 81), 1H NMR (400 MHz, DMSO-d6) O ppm: 9.69 (d, IH), 9.17 (d, IH), 8,37 (s, 2H).

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; NOVARTIS AG; PISSOT SOLDERMANN, Carole; QUANCARD, Jean; SCHLAPBACH, Achim; SIMIC, Oliver; TINTELNOT-BLOMLEY, Marina; ZOLLER, Thomas; (161 pag.)WO2015/181747; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 74205-82-6, 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. 74205-82-6, name is (1H-1,2,4-Triazol-1-yl)methanol, molecular formula is C3H5N3O, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

PREPARATION EXAMPLE A (COMPOUND NO. 15) 2-(4-Chloro-2-fluoro-5-ethoxycarbonylmethoxyphenyl)-4, 5,6,7-tetrahydro-2H-isoindole-1,3-dione (4.0 g, made substantially by the methods described in EP 0 083 055 A2) and KOH (85%, 2.1 g) in 50 ml ethanol were stirred at room temperature for 1 hour and then evaporated to dryness. To the residue was added 100 ml chloroform and 8 ml SOCl2. The reaction mixture was then heated to reflux for 2 hours. Potassium chloride was filtered and washed with fresh chloroform. The filtrate was evaporated to dryness. To the residue was added 50 ml chloroform and 1.5 g 1-hydroxymethyl-(1H)-1,2,4-triazole. The reaction mixture was then stirred at room temperature for 5 hours. Water was added to the mixture, the organic layer was separated and washed with water and brine, dried and concentrated. The residue was purified by silica gel column chromatography to give 2.1 g of 2-(4-chloro-2-fluoro-5-[(1,2,4-triazolylmethoxy)carbonylmethoxy]phenyl)-4,5,6,7-tetrahydro-2H-isoindole-1,3-dione (Compound No. 15). M.P. 151-154 C.

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-Triazol-1-yl)methanol, hurry up and to see.

Reference:
Patent; Rohm and Haas Company; US6258751; (2001); B1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 60166-43-0, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 60166-43-0, name is 1,4-Dimethyl-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.

To a 20 mL scintillation vial was added (S)-3-bromo-7-chloro-5- (phenyl(tetrahydro-2H-pyran-4-yl)methyl)-5H-pyrrolo[2,3-b:4,5-b’]dipyridine (0.223 mmol, 102 mg) l,4-dimethyl-lH-l,2,3-triazole (0.223 mmol, 21.7 mg), Me4NOAc (0.223 mmol, 29.7 mg) and PdCh(PPh3)2 (0.016 mmol, 11.0 mg) followed by the addition of 4 mL NMP. The air was replaced with argon. The sealed reaction vial was heated to 100 C with stirring overnight. It was cooled to room temperature and diluted with EtOAc and washed twice with brine. The organic layer was dried over MgS04, and concentrated. It was subjected to purification on the IS CO, 24 g silica gel column, eluting with 50- 100% EtOAc/hexanes, then 0-10% MeOH/EtOAc to obtain the title compound, 139 mg in 60 % purity. A second ISCO was run using a 24 g silica gel column eluting with 0- 100% (10% 2M NH3 in EtOAc)/DCM to obtain the title compound (thick oil), 58 mg. LC/MS (M+H) = 473.2 [Column: Waters Aquity BEH CI 8 2.1 X 50 mm 1.7u; Mobile Phase A: water with 0.05% TFA; Mobile Phase B: ACN with 0.05% TFA; Temperature: 40 C; Gradient: 2-98% B over 1.5 min; Flow: 0.8 mL/min].

This is the end of this tutorial post, and I hope it has helped your research about 60166-43-0!

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; NORRIS, Derek J.; VACCARO, Wayne; DEBENEDETTO, Mikkel V.; DEGNAN, Andrew P.; DELUCCA, George V.; DESKUS, Jeffrey A.; HAN, Wen-Ching; KUMI, Godwin Kwame; SCHMITZ, William D.; STARRETT, John E., JR.; HILL, Matthew D.; HUANG, Hong; (563 pag.)WO2016/183118; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 584-13-4, 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, 584-13-4, name is 4H-1,2,4-Triazol-4-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: In a typical experiment Pd(OAc)2 (5.6mg, 0.025mmol), triphenylphosphine (13.2mg, 0.05mmol), iodoalkene (1-4) or iodoarene (5-19) (1mmol) were dissolved in DMF (10mL) under argon in a three-necked flask equipped with a reflux condenser and a balloon on the top. Aminotriazole nucleophile (a, b or c) (1.2mmol) and triethylamine (0.5mL) were added. The atmosphere was changed to carbon monoxide. (Caution: High pressure carbon monoxide should only be used with adequate ventilation (hood) using CO sensors as well.) The reaction was conducted for the given reaction time upon stirring at 70C. The mixture was then concentrated and evaporated to dryness. Toluene (15mL) was added to the residue, the precipitate (product) was filtered, washed with water on the filter and dried. The off-white powder-like material was dissolved in methanol, the palladium-black was filtered off and methanol was evaporated.

We very much hope you enjoy reading the articles and that you will join us to present your own research about 584-13-4, Happy reading!

Reference:
Article; Gergely, Mate; Boros, Borbala; Kollar, Laszlo; Tetrahedron; vol. 73; 48; (2017); p. 6736 – 6741;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 288-88-0, 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. 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.

General procedure: A mixture of 4-fluorobenzaldehyde (8.85 mL, 0.1 mol), the corresponding phenol, thiophenol or amine (0.1 mol), and a catalytic quantity of potassium carbonate (K2CO3) was refluxed in DMF (20 mL) for 36 h. After completion of the reaction, the mixture was poured into ice-water (50 mL), and the precipitated product was filtered, washed with deionised water, dried, and recrystallized from EtOH.

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:
Article; Can, Nafiz Oencue; Can, Nafiz nc; Osmaniye, Derya; Levent, Serkan; Sa Sa?lik, Beguem Nurpelin; Inci, Beril; Ilgin, Sinem; Oezkay, Yusuf; Kaplancikli, Zafer Asim; Molecules; vol. 22; 8; (2017);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 41253-21-8, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 41253-21-8, name is Sodium 1,2,4-triazol-1-ide, 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.

[Step 1] Synthesis of ethyl 2-methyl-2-(1H-1,2,4-triazol-1-yl)propanoate: At room temperature, cesium carbonate (5.0 g, 15 mmol) and sodium 1,2,4-triazol-1-ide (0.58 g, 6.2 mmol) were added to a solution of ethyl 2-bromo-2-methylpropanoate (1.0 g, 5.1 mmol) in DMF (25 mL). The resulting reaction solution was stirred at 50C for 24 hours, and then concentrated under reduced pressure. Water was added to the obtained crude product, and extraction with chloroform was carried out. The organic layer was dried over anhydrous sodium sulfate, and then concentrated under reduced pressure, followed by purifying the obtained crude product by silica gel column chromatography (eluent, hexane:ethyl acetate = 7:3 ? 4:6), to obtain 0.84 g (89%) of ethyl 2-methyl-2-(1H-1,2,4-triazol-1-yl)propanoate (hereinafter referred to as Reference Example Compound 40).

In the meantime we’ve collected together some recent articles in this area about Sodium 1,2,4-triazol-1-ide to whet your appetite. Happy reading!

Reference:
Patent; Toray Industries, Inc.; NISHIMURA, Yutaka; KATO, Yuko; HAYASHI, Shinnosuke; YAMAZAKI, Aiko; YAMAMOTO, Masashi; ASAOKA, Yoshiji; YAMADA, Masateru; YAMADA, Naohiro; EP2832724; (2015); 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. HPLC of Formula: C2H4N4

2.6 g (0.15 mol)4-aminotriazole and 13.5 g (0.05 mol)4,4′-dicyanodiphenylmethane (compound 4), 250 ml of acetonitrile was added and the temperature was refluxed for 24 h, Drop to room temperature, precipitate solid, filter, the resulting solid dissolved in 120ml of water, Add 12ml concentrated hydrochloric acid, stirring and dissolving. 5.0 g of sodium nitrite was dissolved in 40 ml of water and then added dropwise to the above reaction solution at 0-5 C. After dripping, the reaction temperature was allowed to react at 0-5 C for 6 h, Reaction end, dropping ammonia water adjusted pH = 7, The filter cake was washed with water and dried to give 12.6 g of the final product compound 5 (letrozole) in 88.7% yield.

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 584-13-4, and we look forward to future research findings.

Reference:
Patent; Zhejiang University of Technology; ZHANG, Xingxian; LI, Pengcheng; Qi, Weipeng; ZHOU, Xinyu; ZHOU, Jinjin; (9 pag.)CN105801501; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics