Author: Jessica.F

Related Products of 4887-88-1, 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. 4887-88-1, name is 5-Bromo-1H-benzo[d]imidazole, This compound has unique chemical properties. The synthetic route is as follows.

To a 0 C solution of 5-bromo-lH-benzimidazole (10.2 mmol) in dichloromethane (30 mL) was dropwise added bis( 1,1 -dimethylethyl) dicarbonate (1 1.2 mmol) and triethylamine (15.2 mmol). The reaction mixture was then stirred at room temperature overnight. The mixture was washed with water (3 x 10 mL) and brine, then dried over sodium sulfate, filtered, and concentrated in vacuo to afford the crude product.

The chemical industry reduces the impact on the environment during synthesis 5-Bromo-1H-benzo[d]imidazole. I believe this compound will play a more active role in future production and life.

Reference:
Patent; GLAXOSMITHKLINE LLC; CHAUDHARI, Amita, M.; HALLMAN, Jason; LAUDEMAN, Christopher, P.; MUSSO, David, Lee; PARRISH, Cynthia, A.; WO2011/66211; (2011); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Reference of 1792-40-1, 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. 1792-40-1, name is 2-Methyl-5-nitro-1H-benzo[d]imidazole belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

To a solution of 5-nitrobenzimidazole (1.0 G, 5.6 MMOL) in acetone (50 mL) was added potassium carbonate (1.0 g), followed by alkyl halide (1.2-1. 5 equivalents). The mixture was stirred under nitrogen at rt, then partitioned between ethyl acetate and water after TLC showed completion of the reaction. The organic phase was washed with brine, dried over sodium sulphate and concentrated in vacuo to give a mixture of 1-ALKYL- 5-NITRO-2-METHYLBENZIMIDAZOLE and 1-alkyl-6-nitro-2-methylbenzimidazole, which were dissolved in ethanol-THF (100 mL, 2: 1) and hydrogenated over 5% Pd-C under atmosphere pressure for 8h. After filtration through celte, the filtrate was evaporated to give a yellow solid that was separated with flash chromatography (Methanol-DCM gradient elution). 1-Alkyl-5-aminobenzimidazole and 1-alkyl-6-aminobenzimidazole were obtained as yellow solid or thick syrup.; 5-Amino-1, 2-DIMETHYLBENZIMIDAZOLE (XDS01191B, XDS02082B): Yellow solid, mp 126-127C (LIT. 128C, [23] ). TLC single spot at Rf 0.30 (5% methanol/DCM) ;’H NMR (270 MHz, DMSO): 6 7.08 (1H, d, J = 8.7 Hz, 7-H), 7.65 (1H, d, J = 1.5 Hz, 4-H), 6.50 (1H, dd, J = 8.7, 1.5 Hz, 6-H), 4.63 (2H, broad, NH2), 3.58 (3H, s, NCH3), 2.39 (3H, s, CH3). 6-Amino-1, 2-DIMETHYLBENZIMIDAZOLE (XDS01191A, XDS02082A): Yellow solid. TLC single spot at Rf 0.33 (5% methanol/DCM) ;’H NMR (270 MHz, DMSO): 6 7. 13 (1H, d, J = 8.4 Hz, 4-H), 6.48 (1H, d, J = 2. 0 Hz, 7-H), 6.43 (1H, dd, J = 8.4, 2.0 Hz, 5-H), 4.83 (2H, broad, NH2), 3.53 (3H, s, NCH3), 2.39 (3H, s, CH3).

The synthetic route of 2-Methyl-5-nitro-1H-benzo[d]imidazole has been constantly updated, and we look forward to future research findings.

Reference:
Patent; STERIX LIMITED; WO2004/37251; (2004); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Reference of 137049-00-4, 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. 137049-00-4, name is 1-Methyl-1H-imidazole-4-sulfonyl chloride belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

A solution of N-[4-methyl-5-(lH-pyrazol-4-yl)-l,3-thiazol-2-yl]acetamide, compound (3) (44 mg; 0.2 mmol; 1 eq.), 1 -methyl- lH-imidazole-4-sulfonyl chloride (36 mg; 0.2 mmol; 1 eq.) and N,N-diisopropylethylamine (0.1 ml; 0.6 mmol; 3 eq.) in DCM (2 ml) was stirred overnight at RT. The reaction mixture was diluted with DCM and washed with water and brine. Organic phase was dried over MgSO4, filtered and evaporated. The resulting crude product was purified by flash chromatography (CHCl3ZMeOH gradient from 100:1 to 50: 50), affording compound (8) as light yellow solid (35 mg; 47.5 %). 1U NMR (DMSO-d6) delta 2.12 (s, 3H), 2.32 (s, 3H), 3.72 (s, 3H), 7.86 (m, IH), 8.06 (s, IH), 8.30 (m, IH), 8.47 (s, IH), 12.11 (br s, IH). M”(ESI): 365.25; M+(ESI): 367.23. HPLC, Rt: 2.31 min (purity: 98.4%).

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, 1-Methyl-1H-imidazole-4-sulfonyl chloride, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; LABORATOIRES SERONO S.A.; WO2007/82956; (2007); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Electric Literature of 53484-16-5,Some common heterocyclic compound, 53484-16-5, name is 6-Bromo-1-methyl-1H-benzo[d]imidazole, molecular formula is C8H7BrN2, 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.

3.1. Compound A 2-[4-[(3-methylbenzimidazol-5-yl)amino]phenyl]acetonitrile A mixture of Pd2(dba)3 (0.01 mmol) and Xantphos (0.01 mmol) in 1,4-dioxane (1 mL) was sonicated and added under nitrogen to a mixture of 6-bromo-1-methyl-benzimidazole (0.45 mmol), 2-(4-aminophenyl)acetonitrile (0.58 mmol) and Cs2CO3 (0.62 mmol) in 1,4-dioxane (2 mL). The mixture was stirred at 110° C. for 12 h. The mixture was diluted (DCM), washed (H2O), dried (phase separator and concentrated. The residue was purified by prep HPLC to yield the desired product (Compound A). MW: 262.3. MS Ms’d: 263.2. NMR: 1H NMR (400 MHz, DMSO-d6): delta=8.13 (1H, s), 7.68 (1H, dd), 7.60 (1H, dd), 7.54 (1H, d), 7.32 (1H, d), 7.24 (1H, t), 6.91 (1H, dd), 3.77 (3H, s), 3.39 (3H, s).

The synthetic route of 53484-16-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; MENET, Christel Jeanne Marie; MAMMOLITI, Oscar; BLANC, Javier; ORSULIC, Mislav; ROSCIC, Maja; US2015/203455; (2015); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Some common heterocyclic compound, 3034-50-2, name is Imidazole-4-carbaldehyde, molecular formula is C4H4N2O, 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. Application In Synthesis of Imidazole-4-carbaldehyde

12.0 g (124 mmol) 4-formyl-imidazole are placed together with 750 mg Raney nickel in 1000 ml of methanolic ammonia solution and shaken at 40 C. for 30 min. Then the mixture is hydrogenated in a Parr apparatus under a hydrogen atmosphere at 5 bars pressure at 40 C. for 14 h. Another 750 mg Raney nickel are then added and the mixture is again hydrogenated at 50 C. under a hydrogen atmosphere at 5 bars pressure for 14 h. The mixture is filtered, evaporated down i. vac., and in each case methanol, toluene and ethanol are added to the residue and it is again evaporated down completely i. vac. The residue is combined with ethereal hydrochloric acid in methanol and evaporated down completely i. vac. The residue is in each case combined with methanol and dichloromethane and evaporated down completely i. vac.Yield: 21.2 g (quant.)Rt value: 0.49 min (D)C4H7N3*2 HCl (170.04/97.12)Mass spectrum: (M+H)+=98

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3034-50-2, its application will become more common.

Reference:
Patent; Dahmann, Georg; Gerlach, Kai; Pfau, Roland; Priepke, Henning; Wienen, Wolfgang; Schuler-Metz, Annette; Nar, Herbert; US2008/51578; (2008); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Some common heterocyclic compound, 2034-22-2, name is 2,4,5-Tribromoimidazole, molecular formula is C3HBr3N2, 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. HPLC of Formula: C3HBr3N2

PRODUCTION EXAMPLE 3 [PRODUCTION OF THE PRESENT COMPOUND (3)] To a solution of a sodium salt, prepared from 1.22 g of 2,4,5-tribromoimidazole and 0.16 g of 60% oil-based sodium hydride, in 5 ml of N,N-dimethylformamide was added dropwise 1.23 g of 4-bromobutoxymethyl bromide at room temperature. After stirring at room temperature for 3 hours, 50 ml of water was added to the reaction mixture which was then extracted with three 30-ml portions of ether. The ether layer was dried over magnesium sulfate and concentrated. The oily product obtained was purified by column chromatography on silica gel to obtain 0.74 g of 1-(4-bromobutoxymethyl)-2,4,5-tribromoimidazole.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2034-22-2, its application will become more common.

Reference:
Patent; Sumitomo Chemical Company, Limited; US4689340; (1987); A;,
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 18075-64-4 as follows. Recommanded Product: 18075-64-4

Example 151 1-Phenyl-1H-imidazole-4-carboxylic acid {2-oxo-2-[4-(3-trifluoromethyl-phenoxy)-piperidin-1-yl]-ethyl}-amide DIPEA (186 mg, 1.4 mmol) was added to a stirred solution of 1-phenyl-1H-imidazole-4-carboxylic acid (60 mg, 0.32 mmol) in DMF (5 mL) followed by HOBt (47 mg, 0.35 mmol) and EDCI (153 mg, 0.8 mmol). After 2 minutes of stirring, 2-amino-1-[4-(3-trifluoromethyl-phenoxy)-piperidin-1-yl]-ethanone hydrochloride (119 mg, 0.35 mmol) (prepared according to Step 1 and 5 of the General Scheme) was added and the resulting mixture was stirred at ambient temperature overnight. The reaction mixture was diluted with cold water, the solid was collected to afford the 129 mg (86% Yield) of 1-phenyl-1H-imidazole-4-carboxylic acid {2-oxo-2-[4-(3-trifluoromethyl-phenoxy)-piperidin-1-yl]-ethyl}-amide. LC/MS [M+H]+: Purity: 473 (M+1), 96.61%. 1H NMR (300 MHz, DMSO-d6): delta 8.4 (s, 1H), 8.32 (s, 1H), 8.08 (t, 1H), 7.8 (d, 2H), 7.6-7.48 (t, 3H), 7.46 (t, 1H), 7.36-7.24 (t, 3H), 4.9 (s, 1H), 4.2 (d, 2H), 4.0 (bs, 1H), 3.8 (bs, 1H), 3.5 (d, 2H), 2.1 (t, 2H), 1.8 (d, 2H).

According to the analysis of related databases, 18075-64-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Forest Laboratories Holdings Limited; US2009/239810; (2009); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Related Products of 51605-32-4, These common heterocyclic compound, 51605-32-4, name is Ethyl 5-methyl-1H-imidazole-4-carboxylate, 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. To a stirred suspension of ethyl 4-methyl-1H-imidazole-5-carboxylate (2.00 g, 13.0 mmol) in acetonitrile (25 mL) and chloroform (25 mL) was added N-bromosuccinimide (2.31 g, 13.0 mmol). The reaction mixture was stirred under nitrogen atmosphere for 20 h, then concentrated in vacuo. The residue was dissolved in ethyl acetate (100 mL) and washed with saturated aqueous sodium bicarbonate (50 mL). The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography eluding with 50percent ethyl acetate in hexanes to afford ethyl 2-bromo-4-methyl-1H-imidazole-5-carboxylate as a light yellow solid (1.88 g, 62percent): 1H NMR (300 MHz, CDCl3) delta 4.35 (q, J=7.1 Hz, 2H), 2.51 (s, 3H), 1.37 (t, J=7.1 Hz, 3H); MS (ES+) m/z 233.1 (M+1), 235.1 (M+1).

The synthetic route of 51605-32-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Dales, Natalie; Fonarev, Julia; Fu, Jianmin; Hou, Duanjie; Kamboj, Rajender; Kodumuru, Vishnumurthy; Pokrovskaia, Natalia; Raina, Vandna; Sun, Shaoyi; Zhang, Zaihui; US2009/156615; (2009); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Related Products of 4857-06-1, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 4857-06-1 name is 2-Chloro-1H-benzo[d]imidazole, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

General procedure: 2-Chloro-1H-benzoimidazole (3.04 g, 20 mmol) was dissolved in dry DMF (15 mL) at 0 C, to the solution was added NaH (0.91 g, 22.7 mmol), and the mixture was stirred for 1 h at 0 C, then halide (21.6 mmol) was added. The mixture was stirred overnight at room temperature and was poured into water (50 mL) and stirred for 1 h, filtrated, washed with water and dried to afford 4a-d.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2-Chloro-1H-benzo[d]imidazole, and friends who are interested can also refer to it.

Reference:
Article; Luo, Yu; Xiao, Feng; Qian, Shijing; Lu, Wei; Yang, Bo; European Journal of Medicinal Chemistry; vol. 46; 1; (2011); p. 417 – 422;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem