Tag: M.W=0-100

288-36-8, name is 1H-1,2,3-Triazole, belongs to Triazoles compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Formula: C2H3N3

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’-dirnethylcyclohexane-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 rt, 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 50% EtOAc in water with 0.1% TFA) to give the desired A-3. A portion of this acid (0.1 1 g, 0.53 mmol) was treated with thionyl chloride (0.59 g, 5.3 mmol) in dichloromethane (5.0 mL) at rt. After stirring at RT for 1 h, the mixture was concentrated, azeotroping with benzene to yield acid chloride A-3.

The synthetic route of 288-36-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; MERCK & CO., INC.; WO2009/11775; (2009); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Electric Literature of 288-88-0, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 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.

Step 1. Preparation of (1H-1,2,4-triazol-1-yl)methanol A mixture of 1H-1,2,4-triazole (7.04 g, 102 mmol), paraformaldehyde (3.06 g, 102 mmol) and catalytic amount of triethylamine was heated to molten condition and stirred at the same temperature (140 C.) for 0.5 hour. Reaction mixture was then cooled to 30 C. to obtain the product (9.0 g, 89%) as white solid.

The synthetic route of 1H-1,2,4-Triazole has been constantly updated, and we look forward to future research findings.

Reference:
Patent; CADILA HEALTHCARE LIMITED; DESAI, Ranjit C.; PINGALI, Harikishore; (40 pag.)US2016/83380; (2016); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Some common heterocyclic compound, 288-36-8, name is 1H-1,2,3-Triazole, molecular formula is C2H3N3, 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. Safety of 1H-1,2,3-Triazole

To a mixture of2-bromo-4-fluorobenzoic acid (30 g, 137 mmol), cesiumcarbonate (89.26 g, 274 mmol) and Cui (5.27 g, 27.4 mmol) in DMF (200 mL) were addedN,N’ -dimethylcyclohexane-1,2-diamine (3.7 mL,23.3 mmol) and 1H-1,2,3-triazole (18.92 g, 27430 mmol). The resulting mixture was stirred at 110 C overnight, cooled, concentrated in vacuo anddiluted with water (150 mL). The aqueous layer was extracted with EtOAc (300 mL x 3). The aqueous layer was acidified with 2N HCl and extracted with EtOAc (300 mL x 4). Thecombined organic layers were washed with brine (150 mL x 3), dried over Na2S04, filtered andthe filtrate concentrated in vacuo. The residue was purified by chromatography on silica gel(petroleum ether: EtOAc = 100: 1 ~ 5 : 1) to provide the title compound (18.13 g) as a yellow5 solid. LRMS m/z (M+H) 208.0 found, 208.0 required.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 288-36-8, its application will become more common.

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

In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 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. Recommanded Product: 288-88-0

(1) Sodium hydride (60% dispersion in mineral oil, 13.8 g, 345 mmol) was washed with hexane and suspended in DMF (150 ml). At an ice bath temperature, 1,2,4-triazole (total; 20.7 g, 300 mmol) was added thereto in four divisions. After stirring for 30 minutes, to the mixture was added tritylchloride (total; 83.7 g, 300 mmol) in seven divisions and additionally added DMF (50 ml). After stirring for 1.5 hours at room temperature, to the reaction mixture was added water (600 ml). The precipitated crystal was collected by filteration, washed with water, dissolved in CHCl3(800 ml) and dried. The solvent was evaporated. The obtained residue was chromatographed on silica gel (ethyl acetate: CHCl3= 1: 2, v/v). The fraction of the objective was concentrated to give 1-trityl-1H-1,2,4-triazole (43.9 g). Yield: 47%.

The synthetic route of 288-88-0 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SHIONOGI & CO., LTD.; EP1219607; (2002); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 60166-43-0, A common heterocyclic compound, 60166-43-0, name is 1,4-Dimethyl-1H-1,2,3-triazole, molecular formula is C4H7N3, 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.

A mixture of 7-bromo-5-nitroisoquinolin-1(2H)-one (2b, 4.00 g, 14.9 mmol), 1,4- dimethyl-1H-1,2,3-triazole (2.17 g, 22.3 mmol), palladium acetate (334 mg, 1.49 mmol), CatacXiumA (butyl di-1-adamantylphosphine) (1.10 g, 2.97 mmol), and potassiumacetate (7.30 g, 74.3 mmol) in 2-methyl-2-butanol (100 mL) was degassed with nitrogen, and heated at 120 C in a sealed tube overnight. After cooling to room temperature, the reaction mixture was partitioned between ethyl acetate (300 mL) and water (300 mL). The organic phase was separated, washed with brine (300 mL), dried over sodium sulfate, concentrated to dryness, and purified by silica gel chromatography(eluting with a gradient of 0%-i 0% methanol in ethyl acetate), affording 7-(i 4-dimethyl- iH-i,2,3-triazol-5-yl)-5-nitroisoquinolin-i(2H)-one (2c, 2.55 g, 60%) as a solid. 1H NMR (400 MHz, DMSO-d6) oe 11.95 (br. s., 1 H), 8.57 (5, 2H), 7.55 (d, J=5.38 Hz, 1 H), 6.98 (d, J=7.34 Hz, iH), 4.00 (5, 3H), 2.29 (5, 3H). MS: 284 [M-i].

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; PFIZER INC.; KUMPF, Robert Arnold; KUNG, Pei-Pei; SUTTON, Scott Channing; WYTHES, Martin James; (138 pag.)WO2015/193768; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Some common heterocyclic compound, 930-33-6, name is 1H-1,2,4-Triazol-3(2H)-one, molecular formula is C2H3N3O, 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. COA of Formula: C2H3N3O

To a solution of 29 (2.0g, 23.5mmol, 1.0 equiv.) in DCM (20mL), (BOC)2O (5.1g, 23.5mmol, 1.0 equiv.), DMAP (0.287g, 2.35mmol, 0.1 equiv.) and DIPEA (10.0mL, 58.7mmol, 2.5 equiv.) were added. The reaction was stirred at room temperature for 18h. The reaction mixture was concentrated under reduced pressure and purified by flash chromatography using DCM/MeOH (20:1, v/v) as mobile phase. Yield, 14%. 1H NMR (400MHz, DMSO-d6) delta 1.50 (s, 9H), 7.98 (s, 1H) ppm. 13C NMR (100MHz, DMSO-d6) delta 27.97, 85.83, 136.53, 147.15, 153.68ppm. ESI-MS for C7H11N3O [M-H]- 184.12.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 930-33-6, its application will become more common.

Reference:
Article; Fonovi?, Ur?a Pe?ar; Knez, Damijan; Hrast, Martina; Zidar, Nace; Proj, Matic; Gobec, Stanislav; Kos, Janko; European Journal of Medicinal Chemistry; vol. 193; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Reference of 1455-77-2, A common heterocyclic compound, 1455-77-2, name is 3,5-Diamino-1,2,4-triazole, molecular formula is C2H5N5, 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.

A mixture of Zn(NO3)2¡¤6H2O (0.030 g, 0.1 mmol), H3btc (0.024 g, 0.1 mmol), Hdatrz (0.01 g, 0.10 mmol), NaHCO3 (0.025 g, 0.3 mmol) and H2O (10 mL) was placed in a 23 ml Teflon-lined stainless steel reactor under autogenous pressure at 160 ¡ãC for 60 h and then cooled to the room temperature slowly. Colorless prism crystals were obtained in 34percent yield based on Zn(NO3)26H2O. Anal. calcd. for C11H7N5O6Zn2 (436.00): C, 30.28; H, 1.61; N, 16.06percent. Found: C, 30.31; H, 1.58; N, 16.02percent. IR (KBr, cm?1) 3387(s), 3175(m), 1607(s), 1566(s), 1395(s), 1366(m), 1307(w), 1224(m), 1077(s), 853(w), 718(s), 688(m), 647(w).

The synthetic route of 1455-77-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Cui, Penglei; Li, Xiaohui; Journal of Molecular Structure; vol. 1081; (2015); p. 182 – 186;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 1455-77-2, name is 3,5-Diamino-1,2,4-triazole, A new synthetic method of this compound is introduced below., Safety of 3,5-Diamino-1,2,4-triazole

Added to three neck fever bottle 126mmol stearic acid, 60mmol3,5-diamino -1, 2, 4-three nitrogen […] 21g glycol solvent, under the protection of argon gas, heating 80 ¡ãC after melting, by adding 3mmol potassium hydroxide, wherein stearic acid: 3,5-diamino -1, 2, 4-triazole: potassium hydroxide mole ratio is 2.1: 1 : 0.05, glycol as the above-mentioned reactant of the total weight of the 50percent. Continued heating to 150 ¡ãC, reaction 12h rear, with 1percent sodium carbonate water solution, in order to remove unreacted stearic acid and the solvent is ethylene glycol, drying to obtain yellow solid containing heterocyclic stearic acid amide-based intermediate A.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; China Petroleum & Chemical Corporation; Yu, Jianye; Lu, Minhui; Yuan, Ping; Yuan, Yufeng; (9 pag.)CN105693640; (2016); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 288-36-8,Some common heterocyclic compound, 288-36-8, name is 1H-1,2,3-Triazole, molecular formula is C2H3N3, 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.

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%).

The synthetic route of 288-36-8 has been constantly updated, and we look forward to future research findings.

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

Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 61-82-5, name is 1H-1,2,4-Triazol-5-amine, This compound has unique chemical properties. The synthetic route is as follows., Computed Properties of C2H4N4

General procedure: 20 mg of gamma-Fe2O3Ph-PMO-NaHSO4 was added to a roundbottomflask containing an aromatic aldehyde (1 mmol), 3-amino-1,2,4-triazole 2 (1.0 mmol), b-diketones (dimedone 3, 1,3-cyclohexadione 4 or ethyl acetoacetate 5) (1.0 mmol) and stirredunder solvent-free conditions at 100 C in certain times. Meanwhile,the progress of the reactionwas indicated by TLC (n-hexane:ethyl acetate; 7:3). With completing the reaction, 3ml ethanol waspoured and the magnetic nanocomposite was separated in thepresence of a magnetic stirring bar; the reaction mixture becameclear. The crude product was recrystallized from ethanol to give thepure product. The pure products were characterized by conventionalspectroscopic methods. Physical and spectral data for theselected compounds are represented below.

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 61-82-5.

Reference:
Article; Haghighat, Mahdieh; Shirini, Farhad; Golshekan, Mostafa; Journal of Molecular Structure; vol. 1171; (2018); p. 168 – 178;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics