Tag: M.W=200-300

Application of 71838-16-9, These common heterocyclic compound, 71838-16-9, name is 2-Bromo-1-iodo-4-methylbenzene, 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.

Step 1: to a solution of 2-bromo-1-iodo-4-methylbenzene (1.74 g, 5.86 mmol) indry THF (20 mL) was added a solution of isopropylmagnesium chloride 2 M inTHF (2.93 mL, 5.86 mmol) at -40C. Then, 2-methyl-N-[(5-methylfuran-2-yl)methylidene]propane-2-sulfinamide Ex.lla (1.00 g, 4.69 mmol) diluted in dryTHF (5 mL) was added dropwise at -40C. The reaction was warmed to rt and stirred at that temperature for 3 days. Water was added to quench the reaction. The two layers were partitionated and the organic layer was dried over Mg504, filtered and the solution was concentrated under reduced pressure. The crude material was purified by silica gel column chromatography using a gradient of hexanes/EtOAc ([8:2] to [6:4]) to afford N-[(2-bromo-4-methylphenyl)(5- methylfuran-2-yl)methyl]-2-methylpropane-2-sulfinamide Ex.12a (541 mg, 30%).

The synthetic route of 71838-16-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GENFIT; DELHOMEL, Jean-Francois; PERSPICACE, Enrico; MAJD, Zouher; PARROCHE, Peggy; WALCZAK, Robert; BONNET, Pascal; FOGHA, Jade; (144 pag.)WO2018/138359; (2018); A1;,
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Related Products of 7425-53-8, The chemical industry reduces the impact on the environment during synthesis 7425-53-8, name is Ethyl 4-iodobutanoate, I believe this compound will play a more active role in future production and life.

General procedure: In a 5 mL round-bottom flask under argon containing zinc powder (197 mg, 3 mmol) and PdCl2(Amphos)2 (7 mg, 0.01 mmol) was added 2% PTS solution in water (1.5 mL). N,N,N’,N’-Tetramethylethylenediamine (TMEDA, 232 mg, 2 mmol) was added at rt followed by the addition of the alkyl halide (2 mmol) and the heteroaromatic halide (0.5 mmol). The flask was stirred vigorously at rt for the indicated time. The product was extracted with EtOAc.11 Silica gel (1 g) was added to the combined organic phase and solvents were removed under vacuum. The resulting dry, crude silica was introduced on top of a silica gel chromatography column to purify the product.

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, Ethyl 4-iodobutanoate, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Krasovskiy, Arkady; Thome, Isabelle; Graff, Julien; Krasovskaya, Valeria; Konopelski, Paul; Duplais, Christophe; Lipshutz, Bruce H.; Tetrahedron Letters; vol. 52; 17; (2011); p. 2203 – 2205;,
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These common heterocyclic compound, 25245-27-6, name is 1-Iodo-3,5-dimethoxybenzene, 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. Application In Synthesis of 1-Iodo-3,5-dimethoxybenzene

General procedure: A 10 mL flask was charged with a magnetic stir bar, CuI (19 mg,10 mol%), L2 (86 mg, 20 mol%), Cs2CO3 (651 mg, 2 mmol) and solid aryl iodides (1.0 mmol). The tube was evacuated and backfilled with argon (this procedure was repeated three times). Under a counter flow of Argon, DMSO (1.0 mL), 1.0 mmol aryl iodides (if liquid), 0.9 mL (12.0 mmol) aqueous ammonia (28%) were added by syringe slowly. The reaction mixture was allowed to stir under argon at room temperature for 24 h. Then the mixture was diluted with 30 ml dichloromethane and passed through a fritted glass filter, the filter cake being further washed with 15 ml dichloromethane, dried over Na2SO4, filtered and the most solvent was removed under vacuum. The residue was purified by column chromatography on silica gel with an eluent of petroleum ether and ethyl acetate.

The synthetic route of 1-Iodo-3,5-dimethoxybenzene has been constantly updated, and we look forward to future research findings.

Reference:
Article; Chen, Dong; Dong, Xinrui; Jiang, Shang; Jiang, Sheng; Qiu, Yatao; Wu, Xiaoxing; Tetrahedron Letters; (2020);,
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Electric Literature of 20555-91-3, 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. 20555-91-3, name is 1,2-Dichloro-4-iodobenzene belongs to iodides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Example 11. Synthesis of l,2-dichloro-4-ethvnylbenzene 440.438Synthesis of Compound 439. A mixture of 438 (5.03 g, 18.4 mmol),(bistriphenylphosiphino)palladium(II) chloride (0.323 g, 0.461 mmol) and copper(I) iodide (0.088 g, 0.461 mmol) in diisopropylamine (40 mL) was heated to 40 0C and trimethylsilyl acetylene (1.99 g, 20.2 mmol) was added. After stirring at 40 0C for 18 h, the reaction mixture was cooled to room temperature, poured into water (120 mL) and then extracted with methylene chloride (3 x 40 mL). The combined organic extracts were dried over magnesium sulfate, filtered and concentrated. Purification by flash chromatography (silica, hexanes) afforded 439.

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, 1,2-Dichloro-4-iodobenzene, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; RESOLVYX PHARMACEUTICALS, INC.; SCHWARTZ, C., Eric; WO2010/39531; (2010); A1;,
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Adding a certain compound to certain chemical reactions, such as: 19094-56-5, name is 2-Chloro-5-iodobenzoic acid, belongs to iodides-buliding-blocks 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 19094-56-5, Quality Control of 2-Chloro-5-iodobenzoic acid

STEP A:A 5.0 L four-necked round bottom flask was charged with 2-chloro-5- iodobenzoic acid (470.8 g, 1.66 mol), CH2CI2 (1.6 L) and DMF (5.0 ml_, 0.03 mol) at ambient temperature (2O0C). Oxalyl chloride (170 ml_, 1.94 mol) was added such that the internal temperature was maintained below 250C. The addition was slightly exothermic; vigorous gas evolution occurred. The resulting mixture was stirred overnight at ambient temperature, under argon, then the volatiles were removed under reduced pressure. The resulting residue (an acid chloride compound) was diluted with dichloromethane (500 ml_) and set aside under a nitrogen atmosphere.

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-Chloro-5-iodobenzoic acid, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; JANSSEN PHARMACEUTICA N.V.; MITSUBISHI TANABE PHARMA CORPORATION; WO2009/35969; (2009); A1;,
Iodide – Wikipedia,
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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. 123158-76-9, name is 1-Chloro-3-iodo-5-nitrobenzene, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: 1-Chloro-3-iodo-5-nitrobenzene

c) A solution of 5-chloro-3-iodonitrobenzene (3.45 g) in acetic acid (10 ml) and ethanol (58 ml) containing iron powder (6.4 g) was refluxed for 6 h with stirring, cooled, filtered and poured into water (100 ml). The product was extracted into ethyl acetate, washed with water, dried over magnesium sulfate, filtered and solvent evaporated to yield, after column chromatography, 3-chloro-5-iodoaniline (1.5 g). delta (360 MHz, DMSO-d6) 5.58 (2H, bs, NH2) 6.57 (1H, bs, 6-H), 6.80 (1H, bs, 2-H), and 6.88 (1H, bs, 4-H).

According to the analysis of related databases, 123158-76-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Merck Sharp & Dohme Limited; US5270309; (1993); A;,
Iodide – Wikipedia,
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These common heterocyclic compound, 19718-49-1, name is Methyl 4-amino-3-iodobenzoate, 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. Application In Synthesis of Methyl 4-amino-3-iodobenzoate

(i) 1H-Indole-2,5-dicarboxylic acid 5-methyl ester A solution of 25 g 4-Amino-3-iodo-benzoic acid methyl ester, 19 ml 2-Oxo-propionic acid, 30.4 g 1,4-Diaza-bicyclo[2.2.2]octane and 1 g Pd(OAc)2 was heated under argon to 100 C. After 5 h the reaction mixture was concentrated under reduced pressure and the residue was partitioned between 300 ml ethyl acetate and 200 ml 1 M hydrochloric acid. The organic layer was dried over MgSO4 and the solvent removed under reduced pressure to yield a yellow solid (6.4 g). From the aqueous layer additional product slowly precipitated as a white solid (7.9 g) which was collected by filtration. Both fractions were combined, dried in vacuo and used in the next reaction without further purification. Yield: 14.3 g MS (ES+): m/e=220.

The synthetic route of Methyl 4-amino-3-iodobenzoate has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Nazare, Marc; Essrich, Melanie; Will, David William; Matter, Hans; Ritter, Kurt; Wehner, Volkmar; US2003/199689; (2003); A1;,
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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. 6293-83-0, name is 2-Iodo-4-nitroaniline, A new synthetic method of this compound is introduced below., category: iodides-buliding-blocks

iV-Benzyl-5-bromo-2-iodobenzamide (805 mg, 1 .93 mmol), 2-iodo-4-nitroaniline (425 mg, 1 61 mmol), copper 1 ) iodide (123 mg, 0.65 mmol), and potassium carbonate (1.11 g, 8.0 mmol) were taken up in anhydrous DMSO (11 mL). The resulting reaction mixture was first stirred at 80C for 2 hr, followed by heating to 135 C for another 16 hr. After cooling to room temperature, the mixture was diluted with an excess of Et20 and washed with water. The organic layer was dried over Na2S04, filtered and concentrated. The residue was purified by flash column chromatography (EtOAc : Hex = 0 : 100 to 100 : 0) to give 10- benzyl-2-bromo-8-nitro-5,l 0-dihydro-ri //-dibenzo| 7,e] l ,4|diazepin-l l -one (179 mg, 26

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; DANA-FARBER CANCER INSTITUTE, INC.; GRAY, Nathanael S.; DE CLERCQ, Dries; JANG, Jaebong; JANNE, Pasi; TO, Ciric; ECK, Michael; PARK, Eunyoung; HEPPNER, David; (0 pag.)WO2019/164953; (2019); A1;,
Iodide – Wikipedia,
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Reference of 608-28-6,Some common heterocyclic compound, 608-28-6, name is 2-Iodo-1,3-dimethylbenzene, molecular formula is C8H9I, 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.

To a test tube containing a magnetic rod was added 4-iodotoluene, 1.0 mmol, Cu2O (14.3 mg, 0.1 mmol), KOH (169 mg, 3.0 mmol), 2-dimethylaminoethanol , 0.3 mL, 3.0 mmol) and DMSO / H2O (1.5 mL / 0.5 mL). After flushing with argon, the mixture was stirred at 100 & lt; 0 & gt; C for 24 hours in a preheated oil bath. After cooling to ambient temperature, the reaction mixture was distributed in aqueous HCl (5%) and ethyl acetate. The organic layer was washed with water and brine, dried over anhydrous MgSO4 and concentrated in vacuo. The crude product was purified by column chromatography (EtOAc / n-Hexane) to give phenol.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-Iodo-1,3-dimethylbenzene, its application will become more common.

Reference:
Patent; SUNGSHIN WOMEN`S UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION; CHAE, Junghyun; KIM, KIM; (13 pag.)KR2017/91976; (2017); A;,
Iodide – Wikipedia,
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5876-51-7, name is 5-Iodobenzo[d][1,3]dioxole, belongs to iodides-buliding-blocks compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Formula: C7H5IO2

Under an argon atmosphere,5-iodo-1,3-benzodioxole (2.09 mL, 15.0 mmol), 4-bromoaniline (1.03 g, 6.0 mmol) synthesized in Reference Example 1 was charged in a 50 mL flask with a Dean Stark. 00 mmol),1,10-phenanthroline (108 mg, 0.60 mmol),Copper iodide (114 mg, 0.60 mmol) and potassium hydroxide (5.39 g, 96.0 mmol) were taken, toluene (30 mL) was added, and the mixture was heated under reflux at 125 C. for 16 hours. After standing to cool, chloroform was added to the reaction mixture, followed by filtration through silica gel. The filtrate was concentrated under reduced pressure, and the obtained crude product was purified by silica gel column chromatography (elution solvent: hexane / chloroform = 2/1) to obtain the objective N, N-bis (1,3-benzodioxole -5-yl) -4-bromoaniline as a brown viscous solid (1.44 g, 3.49 mmol, 51%).

The synthetic route of 5876-51-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; TOSOH CORPORATION; SAGAMI CHEMICAL RESEARCH INSTITUTE; AIHARA, HIDENORI; (45 pag.)JP2015/163597; (2015); A;,
Iodide – Wikipedia,
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