Category: 3034-38-6

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. 3034-38-6, name is 5-Nitro-1H-imidazole, A new synthetic method of this compound is introduced below., Application In Synthesis of 5-Nitro-1H-imidazole

Reference example 1 Preparation of 2,5-dibromo-4-nitroimidazole To a suspension of water (100 ml), 4-nitroimidazole (25 g) and sodium hydrogencarbonate (40.87 g), was dropwisely added bromine (26.5 ml) at lower than 10C, the reaction mixture was stirred at 25 to 30C for 1 hour, and at 50 to 60C for 4 hours. Then concentrated hydrochloric acid was added to the reaction mixture at lower than 10C to adjust pH 1, the crystals separated were collected by filtration, and were washed thoroughly with water. The crystals were dried at 50C under a reduced pressure for 24 hours, there was obtained 51.01 g (85.2%) of 2,5-dibromo-4-nitroimidazole of pale yellow powdery product.

The synthetic route of 3034-38-6 has been constantly updated, and we look forward to future research findings.

Some common heterocyclic compound, 3034-38-6, name is 5-Nitro-1H-imidazole, molecular formula is C3H3N3O2, 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. Recommanded Product: 3034-38-6

A solution of NaOH (1.6 g, 40 mmol) in MeOH (10 mL) was added dropwise to a stirred mixture of 4-nitroimidazole (4.5 g, 40 mmol) and MeOH (40 mL) at rt. After stirring (10min), a trace of insoluble material was filtered off, the clear yellow solution was evaporated under reduced pressure and the residue recrystallised from EtOH to give compound 13 (4.2 g, 79%) as yellow crystals. mp>300 C (lit.17, >300 C). 1H NMR (250.1 MHz, DMSO-d6): d 7.14 (s, 1H, CH), 7.75 (s, 1H, CH). 13C NMR (DMSO-d662.9 MHz): d 131.0 (CH), 145.6 (CH), not observed (CNO2). MS (CI) m/z (%) 112 (M-, 100).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3034-38-6, its application will become more common.

Adding a certain compound to certain chemical reactions, such as: 3034-38-6, name is 5-Nitro-1H-imidazole, belongs to imidazoles-derivatives compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 3034-38-6, Recommanded Product: 5-Nitro-1H-imidazole

To a solution of 4-nitro- 1 H-imidazole (5.0 g, 44 mmol, 1 eq.) in ACN (50 ml) was added K2C03 (9.17 g, 66 mmol). Methyl iodide (7.53 g, 53 mmol, 3.30 ml) was added slowly to the mixture at rt, then the mixture was warmed to 60 C for 14 h. The solvent was removed under reduced pressure, then the residue was diluted with water (30 ml), extracted with DCM (5 x 30 ml) and the combined organic layers dried over Na2S04. The organic phase was concentrated in vacuo to give the title compound as a yellow solid. ‘H NMR (400 MHz, DMSO-de) d = 8.35 (s, 1H), 7.80 (s, 1H), 3.75 (s, 3H).

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 5-Nitro-1H-imidazole, other downstream synthetic routes, hurry up and to see.

Application of 3034-38-6, 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. 3034-38-6, name is 5-Nitro-1H-imidazole belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

A mixture consisting of 4-nitroimidazole (100 g, 884 mmol), sodium bicarbonate (164 g, 1.94 mol), and water (500 ml) was intensively stirred, and thereafter, bromine (106 ml, 2.07 mol) was added dropwise to the mixture at room temperature (23C to 25C) over 6 hours (wherein it intensively foamed during the dropping). The thus obtained mixture was further stirred under heating (50C to 55C, 4 hours). Thereafter, water (400 ml) and concentrated hydrochloric acid (80 ml) were added thereto under cooling on ice (10C or lower), and the obtained mixture was stirred for 1 hours. Crystals were collected by filtration. The obtained crystals were washed with water (on a filter paper, with 400 ml of water), dispersedly washed (with 800 ml of water, twice), and air-dried (50C, 16 hours). Yield: 213 g (Yield: 88. 9%), pale yellow crystal IR (KBr): 3074,1548, 1468, 1392, 1361,1345, 1310, 1259,1172, 1066,975, 830,667 cm~l.

The synthetic route of 5-Nitro-1H-imidazole has been constantly updated, and we look forward to future research findings.

Reference:
Patent; OTSUKA PHARMACEUTICAL CO., LTD.; WO2005/77913; (2005); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

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. 3034-38-6, name is 5-Nitro-1H-imidazole belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. name: 5-Nitro-1H-imidazole

Step A: To a mixture of 4-nitro-1H-imidazole (2.0 g, 17.7 mmol) and K2CO3 (3.67 g, 26.6 mmol) in acetonitrile (18 mL) was added iodomethane (1.32 mL, 21.2 mmol) and the mixture was heated in a sealed vial at 60 C. overnight. The mixture was filtered washing with acetone. The filtrate was concentrated under reduced pressure, and the residue was diluted with hot isopropanol and cooled, and the precipitated solid was collected by filtration. The solid was dissolved in chloroform and filtered, and the filtrate was concentrated under reduced pressure. The residue was triturated with propan-2-ol and collected by filtration to afford 1-methyl-4-nitro-1H-imidazole (1.03 g, 46%) as a tan solid. 1H NMR (300 MHz, DMSO-d6) delta 8.37 (d, J=1.1 Hz, 1H), 7.82 (s, 1H), 3.76 (s, 3H).

The synthetic route of 3034-38-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Hadd, Michael J.; Holladay, Mark W.; Rowbottom, Martin; US2012/53174; (2012); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Related Products of 3034-38-6, 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. 3034-38-6, name is 5-Nitro-1H-imidazole belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

4-nitroimidazole(1.41 g), potassium carbonate (2.5 g), methyl iodide (1.9 g), and 20 mL of acetonitrile,The reaction was refluxed for 12 h. Spin dry under reduced pressure, add 50mL of water,It was extracted three times with 50 mL of ethyl acetate. The organic layers were combined and washed with saturated brine.The organic phase was dried by adding anhydrous Na2SO4, and dried under reduced pressure.1-methyl-4-nitroimidazole(1.5g).

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 5-Nitro-1H-imidazole, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; China Pharmaceutical University; Zhang Dayong; Zhang Tiantai; Shu Lei; (27 pag.)CN110330484; (2019); A;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Synthetic Route of 3034-38-6, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 3034-38-6 as follows.

4-nitroimidazole (25 g, 221 mmol), sodium bicarbonate (37.1 g, 442 mmol) and water (600 mL) for dilution and then bromine (30 mL, 620 mmol) the temperature at the dropwise addition and the reaction mixture was at 40 C and reacted for 12 hours. After filtering the solids level of the reaction mixture was washed with toluene three times and dried under reduced pressure to give a yield of 2,5-dibromo-4-nitroimidazole of 39.8 g (67%). Prepared 2,5-di-bromo-4-nitroimidazole (39.8 g, 149 mmol) and water (450 mL) and then diluted to sodium iodide (223 g, 1486 mmol) was added and stirring under reflux was 12 sigan. Lower the temperature to room temperature, then filtered washing the solids in the reaction mixture with water, dried under reduced pressure to yield 2-bromo-5-iodo of 37.6 g (80%) was obtained a 4-nitroimidazole. Prepared 2-bromo-5-iodo-4- nitroimidazole (20 g, 63 mmol) in ethanol (190 mL) and then diluted in triethylamine (26.5 mL, 190 mmol) and platinum oxide (108 mg, 0.47 mmol) to give the applied wave after reacting for 3 hours under a hydrogen pressure of 3 bar in the reactor was concentrated under a reduced pressure after filtration with a silica gel and celite. Yield of the reaction mixture with 2-ethyl acetate 10% washed with hydrochloric acid solution to remove the moisture of the obtained organic layer over anhydrous magnesium sulfate, and then the filtrate was concentrated under reduced pressure and isopropyl alcohol and hexane, to obtain 7.9 g (65%) and then diluted with to give a-bromo-4-nitroimidazole.

According to the analysis of related databases, 3034-38-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Korea Research Institute of Chemical Technology; Kim, Phill Ho; Lee, Sang Ho; Kim, Soo Hyun; Lee, Ir Young; Yoon, Chang Soo; Oh, Tae Kwon; Cho, Sang Rae; (18 pag.)KR101650716; (2016); B1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 3034-38-6 as follows. name: 5-Nitro-1H-imidazole

Step A Preparation of 4-nitro-1-(triphenylmethyl)imidazole To a solution of 4-nitroimidazole (7.28, g, 64.4 mmol) in 60 mL of dry DMF at 0 C. was added triethylamine (9.87 mL, 70.8 mmol), then chlorotriphenylmethane (17.95 g, 64.4. mmol). After 5 minutes, the solution was warmed to room temperature. After 30 minutes, the reaction mixture was poured over ice, filtered, and washed with ice water. The resulting product was dried in vacuo next to P205 to provide the titled product as a white powder (22.29 g, 97% yield) which was sufficiently pure for use in the next step.

According to the analysis of related databases, 3034-38-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Merck & Co., Inc.; US5859012; (1999); A;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

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. 3034-38-6, name is 5-Nitro-1H-imidazole, This compound has unique chemical properties. The synthetic route is as follows., Product Details of 3034-38-6

General procedure: The opportune alkyl bromide (916 mg, 4.26 mmol) was added to a solution of 4-nitro-1H-imidazole5 (438 mg, 3.87 mmol) in acetonitrile (3 mL) and potassium carbonate (803 mg, 5.81 mmol).The resulting mixture was heated at 60 C overnight. The reaction mixture was then filtered, andthe filtrate was concentrated in vacuum, leaving a yellow solid. The desired product was recoveredfrom this residue by normal phase column chromatography on a cartridge Biotage HP-SiO2 (50 g)column primed with DCM only. The column was then run for 4CV with DCM and then changed toDCM/MeOH 9:1 over 5CV.1-[2-(2-Methoxyphenyl)ethyl]-4-nitro-1H-imidazole (6a): White solid, 82% yield, mp: 100-102 C; IR: nu= 1338 (NO) cm-1; 1H NMR (400 MHz, DMSO-d6) delta = ppm 3.11 (t, J = 7.34 Hz, 2H), 3.75 (s, 3H), 4.28(t, J = 7.34 Hz, 2H), 6.84 (t, J = 7.34 Hz, 1H) 6.93-7.06 (m, 2H), 7.19-7.26 (m, 1H), 7.67 (s, 1H), 8.30 (s, 1H); 13C NMR (100 MHz, DMSO-d6) delta = ppm 158.8, 146.2, 138.7, 129.9, 128.4, 126.8, 121.5, 120.4, 112.9,56.8, 49.6, 28.6; HRMS (ESI): m/z calcd. for C12H13N3O3 248.9567 [M + H]+, found 248.9542.

According to the analysis of related databases, 3034-38-6, the application of this compound in the production field has become more and more popular.

Reference:
Article; Francini, Cinzia Maria; Musumeci, Francesca; Fallacara, Anna Lucia; Botta, Lorenzo; Molinari, Alessio; Artusi, Roberto; Mennuni, Laura; Angelucci, Adriano; Schenone, Silvia; Molecules; vol. 23; 9; (2018);,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Related Products of 3034-38-6, 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. 3034-38-6, name is 5-Nitro-1H-imidazole belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

Example 268a 1-Methyl-4-nitro-1H-imidazole 268a To a mixture of 4-nitro-1H-imidazole (2.0 g, 17.7 mmol) and K2CO3 (3.67 g, 26.5 mmol) in acetonitrile (20 mL) was added iodomethane (1.3 mL, 3.0 g, 21.2 mmol) dropwise while stirring at room temperature. The resulting mixture was stirred at 60C overnight. It was then evaporated under reduced pressure and the residue was diluted with water (20 mL). The mixture was extracted with dichloromethane (2 X 20 mL). The combined extract was concentrated under reduced pressure and the residue was purified by silica-gel column chromatography eluting with 100:1 dichloromethane/methanol to afford 268a as a yellow solid (1.8 g, 82%). MS-ESI: [M+H]+ 128.1. 1H NMR (500 MHz, DMSO-d6) delta 8.37 (s, 1H), 7.82 (s, 1H), 3.76 (s, 3H).

The synthetic route of 5-Nitro-1H-imidazole has been constantly updated, and we look forward to future research findings.

Reference:
Patent; F.Hoffmann-La Roche AG; CRAWFORD, James John; ORTWINE, Daniel Fred; WEI, BinQing; YOUNG, Wendy B.; EP2773638; (2015); B1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem