Month: August 2021

Application of 152628-03-0, 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. 152628-03-0, name is 4-Methyl-2-propyl-1H-benzo[d]imidazole-6-carboxylic acid belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

Reference Example A3: 4-Methyl-6-(2-oxazolyl)-2-propylbenzimidazole [step 1] 6-Methoxycarbonyl-4-methyl-2-propylbenzimidazole (EP502314; 500 mg, 2.29 mmol) was suspended in ethanol (15 mL), 4 mol/L aqueous sodium hydroxide solution (3.1 mL) was added, and the mixture was stirred under reflux for 7 hr. The mixture was concentrated under reduced pressure, and water (20 mL) was added. Under ice-cooling, the mixture was adjusted to pH 1 with 2 mol/L hydrochloric acid, and extracted with chloroform. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was dissolved in dichloromethane, aminoacetaldehyde dimethylacetal (0.50 mL, 4.58 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (527 mg, 2.75 mmol) and 1-hydroxybenzotriazole (421 mg, 2.75 mmol) were added, and the mixture was stirred at room temperature for 6 hr. To the mixture were added saturated aqueous sodium hydrogen carbonate solution (100 mL) and chloroform (100 mL), and the organic layer was washed with brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to give 6-(2,2-dimethoxyethylcarbamoyl)-4-methyl-2-propylbenzimidazole. ESI-MS m/z; 306 (M + H)+; 1H-NMR (CDCl3, delta): 1.02 (t, J = 7.3 Hz, 3H), 1.82-1.97 (m, 2H), 2.65 (s, 3H), 2.92 (t, J= 7.3 Hz, 2H), 3.45 (s, 6H), 3.64 (t, J = 5.3 Hz, 2H), 4.52 (t, J = 5.3 Hz, 1H), 6.42 (s, 1H), 7.89 (s, 1H).

The synthetic route of 4-Methyl-2-propyl-1H-benzo[d]imidazole-6-carboxylic acid has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Kyowa Hakko Kirin Co., Ltd.; EP2327690; (2011); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

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. 26663-77-4, name is Methyl benzimidazole-5-carboxylate, A new synthetic method of this compound is introduced below., Computed Properties of C9H8N2O2

Compound 15 (0.5 g, 2.84 mmol) was reacted with 4-phenylbutylbromide (0.5 mL, 2.84 mmol) in anhydrous DMF(10 mL) and K2CO3 (0.79 g, 5.68 mmol) was added slowly at 0C.The resulting reaction mixture was warmed to 60C and stirredfor 2 h. After completion, reaction mixture was quenched withsaturated NH4Cl, and extracted with ethyl acetate (250 mL). Thecombined organic layers were washed with brine, dried overanhydrous Na2SO4, and concentrated in vacuo. The crude residuewas purified over silica gel column chromatography (MeOH/DCM= 1:49) to yield the mixture of isomers 16 (0.79 g, 90%) as acolorless liquid.Spectral data for isomers. 1H NMR (CDCl3, 300 MHz); delta8.53 (s, 1H), 8.10 (t, 2H, J= 6.0 Hz), 7.34-7.29 (m, 3H), 7.16-7.14(m, 3H), 4.23-3.94 (m, 2H), 2.68-2.63 (m, 2H), 2.30-2.20 (m, 2H).13C NMR (CDCl3, 75 MHz): 167.7, 147.3, 144.6, 139.9, 133.4,128.7, 126.5, 124.8, 123.5, 122.8, 120.1, 112.1, 52.2, 44.5, 32.6,30.9.

The synthetic route of 26663-77-4 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Srinivasrao, Ganipisetti; Park, Jung-Eun; Kim, Sungmin; Ahn, Mija; Cheong, Chaejoon; Nam, Ky-Youb; Gunasekaran, Pethaiah; Hwang, Eunha; Kim, Nam-Hyung; Shin, Song Yub; Lee, Kyung S.; Ryu, Eunkyung; Bang, Jeong Kyu; PLoS ONE; vol. 9; 9; (2014);,
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. 288-32-4, name is 1H-Imidazole belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. HPLC of Formula: C3H4N2

The 1-(4-vinylbenzyl)imidazole was prepared by the reported procedure[27]by heating 4-vinylbenzylchloride (1.0 equivalent) and imidazole (4.0 equivalent) in acetone:water (1:1, 10 volume) with sodium bicarbonate (1.25 equivalent) at 50 C for 20 h. It was characterised by FT-IR and1H-NMR.The mixture of 1-(4-vinylbenzyl)imidazole (32.7 mmol), DVB and azobisisobutyronitrile (AIBN, 5 mol %) in acetonitrile (50 mL) was taken in a round bottom flask. The flask was heated to 80 C in an oil bath and the temperature was maintained for 8 h. The solid product obtained by filtration, was washed with acetonitrile (3 X 20 mL) and dried in an oven at 100 C. Thus, using 3, 5, and 7 mol% of DVB the catalysts CPVBIm-3, CPVBIm-5 and CPVBIm-7, respectively were prepared.

The synthetic route of 288-32-4 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Korgavkar, Nilesh N.; Samant, Shriniwas D.; Synthetic Communications; vol. 48; 4; (2018); p. 387 – 394;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Electric Literature of 17464-88-9, A common heterocyclic compound, 17464-88-9, name is 1,3,4,6-Tetrakis(methoxymethyl)tetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione, molecular formula is C12H22N4O6, 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.

The Amberlyst 15 resin was dried in an oven to 60% of the original weight.3 g of tetramethoxymethylglycoluril was added to a 250 ml three-necked flask, 6 g of Amberlyst15 resin after drying, and 70 g of PGME were added, and the temperature was raised to 60 C. The reaction was stirred at -0.07 MPa for 17 hours while the produced methanol was distilled off.The reaction was filtered through a Buchner funnel and the filter was washed twice with PGME to recover the resin.The filtrate and the washing solution were combined and the solvent PGME was distilled off under reduced pressure to obtain 5.19 g of 1,3,4,6-tetrakis (1′-methyl-2′-methoxy) ethoxymethylglycol, 99.8%

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; Shanxi Medical University; Zhao Zhengbao; Liang Rui; Zhang Jiancheng; Liu Ruiling; Wei Xiao; Li Feifei; (7 pag.)CN105085532; (2017); B;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Reference of 5805-57-2, These common heterocyclic compound, 5805-57-2, name is (1H-Benzo[d]imidazol-2-yl)methanamine, 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.

General procedure: 9-Chloroacridine or its derivatives (1.0 mmol) and phenol (10.0 mmol) were added into a 100 ml round-bottom flask and the mixture was stirred for 1 h at 60 C under argon atmosphere. Then benzimidazole derivatives (8a-8n, 8p-8q, 1.2 mmol) were added. The mixture was stirred under 120 C for 2 h. Then the mixture was poured into a mixture of ethyl acetate (50 mL) and N-methyl morpholine (1 ml) to get the crude product as yellow precipitation. The crude product was recrystallized from ethylacetate.

The synthetic route of 5805-57-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Gao, Chunmei; Li, Bin; Zhang, Bin; Sun, Qinsheng; Li, Lulu; Li, Xi; Chen, Changjun; Tan, Chunyan; Liu, Hongxia; Jiang, Yuyang; Bioorganic and Medicinal Chemistry; vol. 23; 8; (2015); p. 1800 – 1807;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

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., Quality Control of 5-Nitro-1H-imidazole

Example 20Preparation of 3-(4-fluorophenylsulfonyl)-N-Q-methyl-lH-imidazol-4- vDisoq uinolin- 1-amine[00277] Step A: To a mixture of 4-nitro-lH-imidazole (2.0 g, 17.7 mmol) andK2CO3 (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-lH-imidazole (1.03 g, 46%) as a tan solid. 1H NMR (300 MHz, DMSO-t/e) 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; AMBIT BIOSCIENCES CORPORATION; FARAONI, Raffaella; HADD, Michael, J.; HOLLADAY, Mark, W.; ROWBOTTOM, Martin; SETTI, Eduardo; WO2012/30944; (2012); A2;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Application of 1467-16-9,Some common heterocyclic compound, 1467-16-9, name is 1H-Imidazole hydrochloride, molecular formula is C3H5ClN2, 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.

K2CO3 (3.99 g, 28.8 mmol) and imidazole hydrochloride (1.00 g, 9.60mmol) were dissolved in MeCN (30 mL) in a round-bottomed flask. Benzyl bromide (1.25 mL, 10.6 mmol) was added dropwise to the stirred solution at r.t. After 70 h, the solution was concentrated and the materials redissolved in CH2Cl2 (i.e., CH2Cl2) and then extracted with H2O (3 × 30 mL). The organic layer was then dried (MgSO4). The product was collected as off-white coloured wax (0.63 g, 42% yield). 1H NMR spectrum is consistent with that previously reported.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1H-Imidazole hydrochloride, its application will become more common.

Reference:
Article; Herasymchuk, Khrystyna; Huynh, Jennifer; Lough, Alan J.; Roces Fernandez, Laura; Gossage, Robert A.; Synthesis; vol. 48; 13; (2016); p. 2121 – 2129;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Related Products of 1450-93-7, 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. 1450-93-7, name is 1H-imidazol-2-amine sulfate(2:1) belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

2-Aminoimidazole sulfate (659 mg) is dissolved in 0.42 mL of concentrated HCl, 1 mL of water, and 3 mL of acetic acid. The resulting solution is cooled to 0 C. To the solution is added 345 mg of NaNO2 in 1 mL of water dropwise so the internal temperature is maintained below 5 C. The resulting yellow-brown solution is stirred for 30 minutes at 0 C. In a separate flask equipped with a mechanical stirrer a mixture of 1.0 g of 2,2,2-trifluoro-1-(4-pentyl-3,4-dihydroquinoxalin-1(2H)-yl)ethan-1-one, 0.82 g of sodium acetate and 3 mL of acetic acid is cooled to 0 C. To this slurry is added the diazonium solution slowly while stirring. After the addition is complete, the resulting red suspension is stirred for 1 hour at 0 C. The dark reaction mixture is poured into a beaker containing 10 g of ice. Aqueous NaOH (20%) is added to the suspension slowly until pH 6.5 is reached. The mixture is filtered and brick red solid is collected. The crude (E)-1-(7-((1H-imidazol-2-yl)diazenyl)-4-pentyl-3,4-dihydroquinoxalin-1(2H)-yl)-2,2,2-trifluoroethan-1-one is dried and used in the next step without further purification (0.94 g).

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, 1H-imidazol-2-amine sulfate(2:1), other downstream synthetic routes, hurry up and to see.

Reference:
Patent; The Procter & Gamble Company; MURPHY, Bryan Patrick; ZHANG, Guiru; ZHAO, Jielu; (32 pag.)US2018/72970; (2018); A1;,
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 4238-71-5 as follows. Quality Control of 1-Benzyl-1H-imidazole

General procedure: Yield: 82%. Yellow oil. 1H NMR (400HMz, CDCl3, TMS) delta 10.61 (s, 1H), 7.49-7.47 (m, 2H), 7.43(s, 1H), 7.39(s, 1H), 7.34-7.32 (m, 3H), 5.59 (s, 2H), 4.27 (t, J = 6.0 Hz, 2H), 1.90-1.83 (m, 2H), 1.38-1.29 (m, 2H), 0.91(t, J = 6.0 Hz, 3H). 13C NMR (100HMz, CDCl3; TMS) delta 136.12, 134.49, 128.94, 128.68, 128.30, 122.78, 122.50, 51.79, 48.65, 31.23, 18.76, 13.24.

According to the analysis of related databases, 4238-71-5, the application of this compound in the production field has become more and more popular.

Reference:
Article; Wu, Shi; Wang, Binshen; Zhang, Yongya; Elageed, Elnazeer H.M.; Wu, Haihong; Gao, Guohua; Journal of Molecular Catalysis A: Chemical; vol. 418-419; (2016); p. 1 – 8;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Application of 305790-48-1, 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. 305790-48-1, name is 6-Bromo-1-methyl-1H-benzo[d]imidazol-2(3H)-one belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

[000822j A stirred solution of compound 2 (0.1 g, 1 eq) in POC13 (3 mL) was heated at 110C for 18 h. The progress of the reaction was monitored by TLC. After completion of the reaction, the reaction mixture was slowly basified to pH 8 using saturated sodium bicarbonate solution and extracted with ethyl acetate (2 X 25 mL). Combined organic extracts were washed with brine and dried over anhydrous sodium sulfate and evaporated under reduced pressure. The crude product was purified by column chromatography on silica gel 100-200 mesh using 50% EtOAc-hexane to afford the title compound 3. LCMS (mlz): 244.95 (M + 1).

The synthetic route of 6-Bromo-1-methyl-1H-benzo[d]imidazol-2(3H)-one has been constantly updated, and we look forward to future research findings.

Reference:
Patent; BIOMARIN PHARMACEUTICAL INC.; BHAGWAT, Shripad; WANG, Bing; LUEDTKE, Gregory R.; SPYVEE, Mark; (490 pag.)WO2016/57834; (2016); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem