Month: April 2021

Adding a certain compound to certain chemical reactions, such as: 73746-45-9, name is 5-Iodo-2-methyl-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 73746-45-9, COA of Formula: C4H5IN2

Step 1 4-Iodo-2-methyl-1H-imidazole (1.0 g, 4.8 mmol) was dissolved in 10 mL of DMF. Trifluoroethyl p-toluenesulfonate (4.89 g, 19.2 mmol) and cesium carbonate (1.57 g, 4.8 mmol) were added and the mixture was stirred for 18 h in a 50 C. oil bath. The reaction was cooled and taken up in ethyl acetate and water. The layers were separated, and the aqueous layer was extracted twice more with ethyl acetate. The combined organic layers were washed with water and brine, and dried over sodium sulfate. After evaporation, the residue was purified by silica gel chromatography (ethyl acetate/hexanes) to give 0.6 g (43%) of 4-iodo-2-methyl-1-(2,2,2-trifluoro-ethyl)-1H-imidazole. (M+H)+=291.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 5-Iodo-2-methyl-1H-imidazole, and friends who are interested can also refer to it.

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. 139481-44-0, name is Methyl 1-((2′-cyano-[1,1′-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylate, A new synthetic method of this compound is introduced below., Formula: C25H21N3O3

Starting material (Compound 2A) 20 g, placed in a reaction flask, adding ethanol 200ml, 5 g of triethylamine, 37 g of 50% aqueous hydroxylamine solution, the reaction 24h, cooling crystallization to give a white solid 13.6 g (63.0%). At the end of the reaction the reaction mixture by HPLC lactam impurity was mainly (Compound. 6A): the product was 7.15%: 92.84% (i.e. a ratio of an impurity with the product: 12.9),

The synthetic route of 139481-44-0 has been constantly updated, and we look forward to future research findings.

Electric Literature of 22884-10-2, 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. 22884-10-2, name is 2-(1H-Imidazol-1-yl)acetic acid, This compound has unique chemical properties. The synthetic route is as follows.

3.8 mmol (1 equiv) of the respective carboxylic acid (658 mg 3-pyridylacetic acid hydrochloride for 1, 478 mg imidazol-1-yl-acetic acid for 2, 339 mg beta-alanine for 3, 392 mg gamma-aminobutyric acid for 4, 499 mg 6-aminohexanoic acid for 5) were added to 11.4 mmol (3 equiv) H3PO3 in a dry flask. 1.6 mL of distilled sulfolane was added and the contents were heated briefly to dissolve the solids. The solution was cooled down to approximately 25-35 C, and 11.4 mmol (3 equiv) of PCl3 were immediately added. The flask was then placed in a Milestone Ethos Synth Microwave Synthesis Labstation and fitted with a condenser through which cold water was passed. The following microwave programs were applied:For synthesis of 1: 3 min ramp to 65 C, followed by 15 s at 65 C. For synthesis of 2: 3 min ramp to 65 C, followed by 45 s at 65 C.For synthesis of 3: 3 min ramp to 65 C, followed by 15 s at 65 C.For synthesis of 4: 3 min ramp to 65 C, followed by 4 min at 65 C.For synthesis of 5: 3 min ramp to 65 C, followed by 4 min at 65 C.The power was automatically adjusted to reach and maintain the temperature designated by the program, which is determined by a built-in IR sensor in the microwave reactor. For the synthesis of intermediates 1 and 2, the power fluctuated between 0 and a max of 300-400 W, while for 3, 4, and 5, the max power was typically 200-300 W.The solid mixture after microwave irradiation consists of intermediate phosphorus compound together with a yellow-orange unwanted side product which can be removed by centrifugation before or after hydrolysis. The reaction mixture was quenched with 6 mL of H2O, yielding a clear solution that was then transferred to a 50 mL sealed quartz reaction vessel and was hydrolyzed to the bisphosphonic acid in the microwave reactor with a 6 min ramp to 150 C, followed by 4 min at 150 C. The power applied fluctuated between 0 and a max of 450-500 W. The pH of the hydrolysis mixtures for acids 1, 3, 4, and 5 was adjusted15 with NaOH and the mixture then aged at 0-5 C until crystallization of the products was complete. Acids 4 and 5 were precipitated as monosodium salts by stirring with 2-5 mL ethanol for 1-2 h at room temperature. Acid 2 was precipitated by the addition of 9 mL acetone to the acidic hydrolysis mixture and stirring for 3-4 h at room temperature. The white crystalline products were then filtered and washed with cold H2O and acetone or ethanol and then dried under vacuum at 45 C to constant weight.15 with NaOH and the mixture then aged at 0-5 C until crystallization of the products was complete. Acids 4 and 5 were precipitated as monosodium salts by stirring with 2-5 mL ethanol for 1-2 h at room temperature. Acid 2 was precipitated by the addition of 9 mL acetone to the acidic hydrolysis mixture and stirring for 3-4 h at room temperature. The white crystalline products were then filtered and washed with cold H2O and acetone or ethanol and then dried under vacuum at 45 C to constant weight.

The chemical industry reduces the impact on the environment during synthesis 2-(1H-Imidazol-1-yl)acetic acid. I believe this compound will play a more active role in future production and life.

Synthetic Route of 7189-69-7, The chemical industry reduces the impact on the environment during synthesis 7189-69-7, name is 1,1′-Sulfonyldiimidazole, I believe this compound will play a more active role in future production and life.

0.25 g (1.39 mmol) of 2-ethoxy-6-hydroxybenzenecarboximidamide is stirred without solvent with 0.65 g (3.28 mmol) of 1,1′-sulphonyldiimidazole at 130 C. for 18 hours. Cooling is followed by stirring the mixture with water and removing with dichloromethane. The organic phase is dried over magnesium sulphate and concentrated under reduced pressure. This gives 0.2 g of a pale yellow, crystalline material.

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, 1,1′-Sulfonyldiimidazole, other downstream synthetic routes, hurry up and to see.

Related Products of 95470-42-1, These common heterocyclic compound, 95470-42-1, name is Ethyl 2-bromo-4-methyl-1H-imidazole-5-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.

(1) Ethyl 2-bromo-4-methyl-i H-imidazole-5-carboxylate (1.52 g, 6.0 mmol), (4-chlorobenzo[b]thiophen-3-yl)metha- nol (1.79 g, 9.0 mmol) obtained according to a method described in a literature (for example, WO 2002/066457), and triphenylphosphine (2.36 g, 9.0 mmol) were dissolved in THF (15 mE), a 1.9 M solution of DIAD in toluene (4.73 mE, 9.0 mmol) was added dropwise thereto under cooling at 0°C., and the mixture was stirred at 30°C. for 10 hours. The solvent was distilled away and the residue was purified by colunm chromatography to obtain ethyl 2-bromo-i ((4-chlorobenzo [b]thiophen-3-yl)methyl)-4-methyl- 1 H-imidazole-5-car- boxylate (1.73 g):10138] ?H-NMR (CDC13) oe: 7.72 (1H, d, J=8.3 Hz), 7.41-7.24 (3H, m), 6.15 (2H, s), 4.21 (2H, q, J=7.1 Hz), 2.57 (3H, s), 1.20 (3H, t, J=7.1 Hz);10139] ESI-MS mlz=413 (M+H).

The synthetic route of 95470-42-1 has been constantly updated, and we look forward to future research findings.

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. 822-36-6, name is 4-Methyl-1H-imidazole, A new synthetic method of this compound is introduced below., Product Details of 822-36-6

4-Methylimidazole (249 mg, 3.03 mmol), 4-fluoro-3-methoxybenzonitrile (417 mg, 2.76 mmol), and cesium carbonate (1.89 g, 5.80 mmol) were placed in a reaction vessel in a nitrogen gas atmosphere, N,N-dimethylformamide (5.0 mL) was added to the vessel and the resultant mixture was stirred at room temperature for 96 hours. To the reaction mixture were successively added water (2 mL) and ethyl acetate (6 mL) to perform an extraction, and the aqueous layer was separated and then, the organic layer was washed with water (5 mL). To the organic layer were added ethyl acetate (5 mL) and water (5 mL) to perform an extraction, and the aqueous layer was separated and then, the organic layer was washed with water (5 mL) and concentrated under a reduced pressure to obtain 499 mg of a crude product. To the crude product was added tert-butyl methyl ether (2.5 mL) to obtain a suspension, and the solids collected by filtration of the suspension were washed with tert-butyl methyl ether/heptane (2.5 ml; 1 :3) three times to obtain 431 mg of a crude product. To the obtained crude product was added tert-butyl methyl ether (4.3 mL) in a nitrogen gas atmosphere, and the resultant mixture was stirred at 50C for 30 minutes and then naturally cooled to room temperature, and the solids collected by filtration were washed with tert-butyl methyl ether/heptane (2.1 mL; 1 :3) twice and dried under a reduced pressure to obtain 310 mg of a title compound. Yield: 53%.

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.

Adding a certain compound to certain chemical reactions, such as: 670-83-7, name is 2,5-Diphenyl-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 670-83-7, SDS of cas: 670-83-7

Into a 15mL pressure tube, sequentially add 1p (66.1mg, 0.3mmol), dichloromethane (3mL), 2a (84.7mg, 0.45mmol), dichloro (pentamethylcyclopentadienyl) rhodium (III) dimer (4.7mg, 0.0075 mmol) and silver acetate (100.1 mg, 0.6 mmol), then the pressure-resistant tube was sealed and placed in a 100 C. oil bath for 10 h. After the reaction was completed, the mixture was cooled to room temperature, filtered with suction, dried, and separated through a silica gel column (dichloromethane / methanol / acetic acid = 30/1 / 0.1) to obtain 3p (85.4 mg, 70%) as a white solid product.

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Synthetic Route of 53981-69-4, 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. 53981-69-4, name is 1-(1H-Imidazol-2-yl)ethanone belongs to imidazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below.

alpha-Mangostin (1, 205 mg, 0.5 mmol) was dissolved in dichloromethane (10 mL) and acetylimidazole (55 mg, 0.5 mmol) was added at room temperature. After 6 hours, additional acetylimidazole (55 mg, 0.5 mmol) was added and the reaction was allowed to proceed overnight. The mixture was then diluted with ethyl acetate (15 mL) and washed in succession with 1M HCl (2 × 10 mL), saturated sodium hydrogen carbonate (2 × 10 mL) and saturated sodium chloride (2 × 10 mL). The organic layer was dried (sodium sulfate) and the solvent was evaporated under reduced pressure to give a yellow, oily solid (210 mg). Flash-column chromatography of the residue (silica gel, ethyl acetate/hexane 15 : 85) afforded three fractions: 3,6-O-diacetyl–mangostin (4, yellow solid, 20 mg, 8% yield); 3-O-acetyl–mangostin (6, yellow solid, 100 mg, 44% yield); unreacted -mangostin (1, yellow solid, 40 mg, 20 %).

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-(1H-Imidazol-2-yl)ethanone, other downstream synthetic routes, hurry up and to see.

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. 288-32-4, name is 1H-Imidazole, A new synthetic method of this compound is introduced below., HPLC of Formula: C3H4N2

Imidazole (10 g, 0.150 mol) and sodium hydroxide (29.4 g, 0.74 mol) were charged to the reaction flask containing water (250 mL) and stirred vigorously for 15 min at ambient temperature. Cooled the reaction mass to 10 C and charged sodium hypochlorite (16.7 g, 0.225 mol) to the reaction mixture, during the addition temperature was maintained at 10 C. Stirred the reaction mass for 6 h at ambient temperature, the reaction completion was monitored by TLC. After the completion of the reaction cooled the reaction mass to 10 C and slowly charged concentrated HCl solution to bring the reaction pH to 6 to 7. Charged dichloromethane (2 * 200 mL) and stirred for 10 min, separated the organic layer and was washed with saturated brine solution. The organic layer was dried over sodium sulfate and concentrated the dichloromethane and the crude obtained was purified by column chromatography on a silica gel (230-400 mesh) using ethyl acetate (10-35%) in petroleum ether as eluant to afford 4-chloroimidazole. Appearance: Pale yellow solid; Yield = 52%; M.P. = 118-119 C; 1H NMR (400 MHz, DMSO-d6) delta ppm = 7.09 (s, 1H, ArH), 7.39 (s, 1H, ArH), 12.42 (s, 1H, NH); 13C NMR (300 MHz, DMSO-d6) delta ppm = 126.7, 128.2, 140.2; LC/MS (ESI-MS) m/z = 103.6 (M + 1).

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.

Application of 53484-16-5, 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. 53484-16-5, name is 6-Bromo-1-methyl-1H-benzo[d]imidazole, This compound has unique chemical properties. The synthetic route is as follows.

Step i: 3-fluoro-4-[(3-methylbenzimidazol-5-yl)amino]benzonitrile A mixture containing 6-bromo-1-methyl-benzimidazole (2.38 mmol), 4-amino-3-fluoro-benzonitrile (3.57 mmol), XPhos (0.95 mmol), Cs2CO3 (7.14 mmol) and Pd(OAc)2 (0.71 mmol) in dry toluene (8 mL) was stirred at 110° C. for approximately 16 h. The mixture was diluted (EtOAc), washed (H2O), dried (Na2SO4) and concentrated to yield the desired product 3-fluoro-4-[(3-methylbenzimidazol-5-yl)amino]benzonitrile.

The chemical industry reduces the impact on the environment during synthesis 6-Bromo-1-methyl-1H-benzo[d]imidazole. I believe this compound will play a more active role in future production and life.