Month: August 2021

Related Products of 10351-75-4, These common heterocyclic compound, 10351-75-4, name is 1H-Benzo[d]imidazole-5,6-dicarboxylic acid, 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: A mixture containing Eu2O3 (0.2 mmol), MnSO4*H2O (0.3 mmol), H3bidc (0.6 mmol) and water (10 mL) was sealed in a Teflon-lined stainless steel vessel (23 mL), which was heated at 170 C for 4 days and then cooled to room temperature in 2 days. Colorless rhombic crystals of 2 were obtained and picked out, washed with distilled water and dried in air (Yield: 38.17% based on Eu).

Statistics shows that 1H-Benzo[d]imidazole-5,6-dicarboxylic acid is playing an increasingly important role. we look forward to future research findings about 10351-75-4.

Reference:
Article; Sun, Ya-Guang; Zong, Wen-Hui; Xiong, Gang; Guo, Mei-Yan; Ding, Fu; Wang, Shu-Ju; You, Li-Xin; Ren, Bao-Yi; Xu, Zhen-He; Gao, En-Jun; Polyhedron; vol. 83; (2014); p. 68 – 76;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Reference of 615-16-7, 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. 615-16-7, name is 2-Hydroxybenzimidazole belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

Example 23; Preparation of 3-((2-(l,3-dimethyl-2-oxu-2)3-dihydro-l//-benzimidazol-5-yl)-2- oxoethyl)tbio) propanoic acid (23); (i) l,3-Dimethyl-l,3-dihydro-2W-bcn7.iitauiidazol-2-onc; l,3-Dihydro-2H-benziiuida7;ol-2-one (7.522 g, 56.1 mmol) was dissolved in anhydrous DIvIF (125 oil) and anhydrous potassium carbonate (46.581 g, 337 mmol) and iodomethane (21 ml, 337 mmol) were added then the mixture stirred at room temperature overnight. The reaction mixture was poured into chloroform (500 ml), filtered and the filtrate was evaporated to dryness. The resultant residue was dissolved in a mixture of ethyl acetate (150 ml) and water (100 ml). The cthyi acetate phase was washed with water (2 x 100 ml) and brine ( 100 ml), dried over anhydrous magnesium sulfate and filtered. The filtrate was evaporated to dryness to give the title compound (7,229 g, 79% yield) as a pale yellow solid.1H nmr (400 MHz1 CDCl3) delta 3.43 (s, 6H); 6.95-7.01 (m, 2H); 7.08-7.14 (m, 211).

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, 2-Hydroxybenzimidazole, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; CORTICAL PTY LTD; WO2007/70961; (2007); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Synthetic Route of 53981-69-4, 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. 53981-69-4 name is 1-(1H-Imidazol-2-yl)ethanone, 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.

To a solution of 6-bromo-3-(bromomethyl)-l,2-benzoxazole (55 mg) in acetonitrile (0.9 mL) were added potassium carbonate (78 mg) and l-(lH-imidazol-2-yl)ethanone (22 mg). After stirring for 2 hours at 80 C, the reaction was filtered and the filtrate was concentrated in vacuo. The residue was purified with OH-type silica gel column chromatography (5-60 % EtOAc in n-hexane) to give the title compound (54 mg, 89 % yield) as colorless solid. MS (ESI) m/z : 320[M+l] RT = 0.936 min. LCMS Condition : B.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1-(1H-Imidazol-2-yl)ethanone, and friends who are interested can also refer to it.

Reference:
Patent; TAISHO PHARMACEUTICAL CO., LTD.; TAKASHIMA, Hajime; SASAKI, Toru; TANAKA, Nozomi; OTAKE, Norikazu; TSURUTA, Risa; YAMADA, Yousuke; MATSUDA, Yohei; OGATA, Yuya; (346 pag.)WO2018/216822; (2018); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Adding a certain compound to certain chemical reactions, such as: 32673-41-9, name is 4-Imidazolemethanol hydrochloride, 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 32673-41-9, Quality Control of 4-Imidazolemethanol hydrochloride

Step A 4-(Hydroxymethyl)-1-(triphenylmethyl)imidazole To a solution of 4-(hydroxymethyl)imidazole hydrochloride (35.0 g, 260 mmol) in dry DMF (250 mL) at room temperature was added triethylamine (90.6 mL, 650 mmol). A white solid precipitated from the solution. Chlorotriphenyl-methane (76.1 g, 273 mmol) in DMF (500 mL) was added dropwise. The reaction mixture was stirred for 20 hours, poured over ice, filtered, and washed with ice water. The resulting product was slurried with cold dioxane, filtered, and dried in vacuo to provide the titled product as a white solid.

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, 4-Imidazolemethanol hydrochloride, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Merck & Co., Inc.; US6441017; (2002); B1;,
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. 10040-98-9, name is 4-Imidazol-1-yl-benzaldehyde, This compound has unique chemical properties. The synthetic route is as follows., SDS of cas: 10040-98-9

General procedure: To a solution of an aromatic ketone (3 mmol) in EtOH (15 mL), anaromatic aldehyde (3 mmol) and KOH (3 mmol) were added and the reaction mixture was stirred for 8 h at room temperature. On completion, the reaction mixture was concentrated under vacuum, the residue was dissolved in EtOAc (30 mL) and washed with water, then brine, dried over anhydrous Na2SO4 and concentrated under vacuum to afford the target compounds, which were purified by column chromatography on silica gel (hexane/EtOAc = 7/1).

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 10040-98-9.

Reference:
Article; Fu, Dong-Jun; Zhang, Sai-Yang; Song, Jian; Liu, Yin-Chao; Zhang, Li; Zhao, Ruo-Han; Zi, Xiao-Lin; Liu, Hong-Min; Zhang, Yan-Bing; Journal of Chemical Research; vol. 40; 10; (2016); p. 620 – 623;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Application of 4856-97-7, 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 4856-97-7 as follows.

To 1.2 eq. (2.3 g, 0.041 mol) of KOH dissolved in a 50percent (v/v) water?ethanol mixture (14 mL), 5.1 g (0.034 mol) of 1-(1H-benzimidazol-2-yl) methanol was added. The solution was cooled to 0 °C, and 5 mL of dimethyl sulfate was added dropwise over 30 min (the temperature of the mixture did not exceed 5 °C). The mixture was kept under stirring at 0 °C for 30 min and at room temperature for additional 15 min. The solid obtained was recovered by filtration and washed with water, giving the title compound as a white solid. It was purified by recrystallization from a mixture of CH3CN/EtOH. White solid; Yield: 4 g (72percent); M.p. 122?124 °C; 1H NMR (250 MHz, CDCl3): delta 7.76?7.64 (m, 1H), 7.29?7.19 (m, 3H), 5.13 (OH, br s, 1H), 4.88 (CH2, s, 2H), 3.81 (N-CH3, s, 3H); FT-IR (4000?600 cm?1): 3450?2800, 1639, 1454, 1312, 1007, 860, 744, 567; UV?vis (MeOH) (lambdamax, nm (logepsilon, M?1 cm?1): 280(5.35), 268(5.18), 244(5.14), 219(5.06).

According to the analysis of related databases, 4856-97-7, the application of this compound in the production field has become more and more popular.

Reference:
Article; Benhassine, Anfel; Boulebd, Houssem; Anak, Barkahem; Bouraiou, Abdelmalek; Bouacida, Sofiane; Bencharif, Mustapha; Belfaitah, Ali; Journal of Coordination Chemistry; vol. 71; 2; (2018); p. 311 – 328;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Related Products of 288-32-4, 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. 288-32-4, name is 1H-Imidazole, This compound has unique chemical properties. The synthetic route is as follows.

Under nitrogen system imidazole was dissolved in anhydrous THF and added dropwise slowly an appropriate amount of acetic anhydride (acetic anhydride), then the reaction exotherm, i.e. about half an hour to complete the reaction; After completion of the reaction, concentration under reduced pressure, and evacuated the solvent was removed to give a solid product, and solid was rinsed with n – hexane and filtered to give a white solid of compound 11, yield about 98percent.The system under nitrogen compound 11 was dissolved in dichloromethane and at 0 Compound 3 was gradually added dropwise to the solution, followed by return to room temperature for about two hours, the solution was added diethyl ether to form a solid precipitate, The solid was filtered, then the solid was rinsed with diethyl ether, to give the compound 10 as a white solid, a yield of about 81percent.

The chemical industry reduces the impact on the environment during synthesis 1H-Imidazole. I believe this compound will play a more active role in future production and life.

Reference:
Patent; ETERNAL MATERIALS CO., LTD.; CHENG, PI JEN; CHOU, MENG YEN; LEE, CHUAN ZONG; WU, CHUNG JEN; (47 pag.)TWI516478; (2016); B;,
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. 16681-56-4, name is 2-Bromo-1H-imidazole belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 16681-56-4

To 2-bromo-lH-imidazole (0.073 g, 0.5 mmol), 3-(bromomethyl)pyridine hydrobromide (0.139 g, 0.550 mmol) and potassium carbonate (0.223 g, 1.614 mmol) was added acetone (15 mL). This mixture was stirred for 18 h at RT. The solvent was then removed in vacuo yielding a brown residue. This residue was then partitioned between ethyl acetate (35 mL) and water (35 mL) and the phases separated. The aqueous phase was then extracted twice with ethyl acetate (2×35 mL), the organics combined and then dried using a hydrophobic frit. The solvent was then removed in vacuo yielding a yellow oil as the title compound (107 mg, 0.449 mmol, 90%). LCMS (System B): tRET = 0.56 min; MH+ 238, 240.

The synthetic route of 16681-56-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GLAXOSMITHKLINE INTELLECTUAL PROPERTY (NO.2) LIMITED; BAXTER, Andrew; BIT, Rino, Antonio; BROWN, John, Alexander; HIRST, David; HUMPHREYS, Philip; JONES, Katherine, Louise; PATEL, Vipulkumar, Kantibhai; (124 pag.)WO2018/41964; (2018); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Reference of 23814-14-4, 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. 23814-14-4, name is 2-Oxo-2,3-dihydro-1H-benzo[d]imidazole-5-carboxylic acid belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

Example 9; 2-Oxo-N-(2-oxo-2,3-dihydro-1 H-benzo [d] imidazol-5-yl)-2,3-dihydro-1 H- benzo[d]imidazole-5-carboxide (referred to as DC-0051-Bl); The amide was synthesized by reacting 2-oxo-2, 3-dihydro-lH- benzoimidazolyl-5-carboxylic acid with 5-amino-2, 3-dihydro-lH-benzoimidazol-5- one in the presence of 1,3- N, N-diisopropylcarbodiimide and 1- hydroxybenzotriazole. 1,3- N, N-Diisopropylcarbodiimde (0.504 g; 4 mmol) was added to a solution of 2-oxo-2,3-dihydro-lH-benzoimidazole-5-carboxylic acid (0.448 g; 2.5 mmol), 5- amino-2-oxo-2,3-dihydro-lH-benzoimidazole and 1-hydroxybenzotriazole (0.34 g; 2.5 mmol) in anhydrous N, N-dimethylformamide (10 ml). The reaction mixture was stirred at 40 C for 12 hours. The precipitated product was isolated by filtration of the reaction mixture followed by washing three more times with N, N-dimethylformamide (3 ml). The product was dissolved in dimethylsulfoxide (5ml) and precipitated by diluting the solution with acetonitrile (60 ml). Filtration and drying under vacuum gave 2-Oxo-N-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-5-yl)-2,3-dihydro-1H- benzo [d]imidazole-5-carboxide (also referred to as DC-0051-B1) (0.22 g; 28%). ¹H NMR ((CD3)2SO 10.62 (1H, s, NH), 10.53 (1H, s, NH), 9.98 (lH, s, NH) 7.65 (1H, d, J 8Hz) 7.55 (2H, bs) 7.23 (1H, d, J 8Hz) 7.05 (1H, d, J 8Hz) 7.85 (1H, d, J 8Hz).

The synthetic route of 2-Oxo-2,3-dihydro-1H-benzo[d]imidazole-5-carboxylic acid has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PROTEOTECH, INC.; WO2005/113489; (2005); 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. 33016-47-6, name is 1-Trityl-1H-imidazole-4-carbaldehyde, A new synthetic method of this compound is introduced below., Quality Control of 1-Trityl-1H-imidazole-4-carbaldehyde

Step 8.c. 7-((1-Triphenylmethyl-imidazol-4-yl)methyl)-2-(2-methoxyphenyl)-8-(1-methylpropyl)- 5,6,7,8-tetrahydro-imidazo[1,2-a]pyrazine 8-(1-Methylpropyl)-2-(2-methoxyphenyl)-5,6,7,8-tetrahydro-imidazo[1,2-a]pyrazine dihydrochloride (compound vii where R3 is 1-methylpropyl, R4 is 2-methoxyphenyl, and R5-R7 are H) (from Step 4.g.)(179 mg, 0.50 mmol) and the product from Step 8.b. (compound xiv where R2 is H) (338 mg, 1.00 mmol) were combined in 1,2-dichloroethane (2.0 ml). NaBH(OAc)3 (212 mg, 1.00 mmol) was added and the reaction was allowed to stir at room temperature for about 1 hour.. The reaction mixture was poured onto a silica gel column and the product was eluted using EtOAc as eluant.. Product fractions were combined and concentrated to yield pure product as white foam (150 mg, 49%).. Mass spec. 608.2, MH+.

The synthetic route of 33016-47-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SOCIETE DE CONSEILS DE RECHERCHES ET D’APPLICATIONS SCIENTIFIQUES (S.C.R.A.S.); EP1382607; (2004); A2;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem