Month: September 2021

Reference of 29289-13-2, 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. 29289-13-2, name is 2-Iodo-4-methylaniline belongs to iodides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

Step 2: Preparation of 1-bromo-2-iodo-4-methylbenzene To a mixture of 2-iodo-4-methylaniline (50 g, 214.55 mmol) in HOAc (250 mL), H2SO4 (10 mL), and H2O (40 mL) was added a solution of NaNO2 (14.5 g) in H2O (80 mL) at 0 C. The solution was stirred for 1.5 h. This was defined as mixture A. In another round bottom flask, a mixture of NaBr (107 g), CuSO4 (32.2 g), Cu (38.9 g), H2SO4 (39 mL), and H2O (25 mL) was refluxed for 1.5 h. To this mixture was added mixture A, and the solution was then refluxed for 3 h. The solution was treated with water and extracted with EA (500 mL*3). The combined organic layers were washed with brine, dried over Na2SO4, and then concentrated in vacuo. Purification by column chromatography over silica gel eluted with PE afforded the product as colorless oil (43 g, yield 68%). 1H NMR (300 MHz, CDCl3): delta 7.69 (m, 1H), 7.47 (d, J=8.1 Hz, 1H), 7.00 (m, 1H), 2.26 (s, 3H) ppm.

The synthetic route of 2-Iodo-4-methylaniline has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Anacor Pharmaceuticals, Inc.; Eli Lilly and Company; Akama, Tsutomu; Balko, Terry William; Defauw, Jean Marie; Plattner, Jacob J.; White, William Hunter; Winkle, Joseph Raymond; Zhang, Yong-Kang; Zhou, Yasheen; US2013/131016; (2013); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Related Products of 63131-30-6, 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 63131-30-6 as follows.

10 ml test tube reaction of adding 0.2mmol2 – (4-methoxyphenylamino) methyl acetate and 0.01mmol trifluoro methane sulfonic acid copper, in order to 3 ml acetonitrile as the reaction solvent, added under stirring 0.1mmol4-iodophenylamino Carbamoyl ethyl acetate, the (green) LED illumination the reaction solution 1h rear, turns on lathe does reaction solvent, after column separation, the obtained product is nuclear magnetism hydrogen spectrum carbon spectrum and mass spectrum is identified as 1-ethyl 4-methyl 2 – (4-iodo benzoyl) – 3 – ((4-methoxylphenyl) amino) succinate

According to the analysis of related databases, 63131-30-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences; WU, LIZHU; GAO, XUEWANG; MENG, QINGYUAN; LEI, TAO; ZHONG, JIANJI; XIANG, MING; TONG, ZHENHE; (21 pag.)CN104230734; (2016); B;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

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. 3032-81-3, name is 1,3-Dichloro-5-iodobenzene, A new synthetic method of this compound is introduced below., Formula: C6H3Cl2I

To a mixture of (1R, 3r, 5S) -tert-butyl 3-hydroxy-8-azabicyclo [3.2.1] octane-8-carboxylate (5.00 g, 22.00 mmol) in toluene (50 mL) was added 3, 5-dichloroiodobenzene (6.00 g, 22.00 mmol) , cesium carbonate (21.50 g, 66.00 mmol) , copper (I) iodide (0.63 g, 3.30 mmol) , 3, 4, 7, 8-tetramethyl-1, 10-phenantroline (1.60 g, 6.60 mmol) and molecular sieves (4A, 5.00 g) . The reaction mixture was degassed by passing a stream of argon through it and then heated at 80 in a sealed vial for 120 hours. After cooling to ambient temperature, the reaction mixture was diluted with ethyl acetate (150 mL) and filtered over diatomaceous earth. Concentration of the filtrate in vacuo gave a residue which was purified by flash chromatography (0 to 20ethyl acetate in hexanes) to afford the title compound as a yellowish oil (3.80 g, 46) :1H NMR (300 MHz, CDCl3) delta 6.93-6.90 (m, 1H) , 6.71-6.69 (m, 2H) , 4.59-4.53 (m, 1H) , 4.28-4.09 (m, 2H) , 2.24-1.85 (m, 8H) , 1.45 (s, 9H) MS (ES+) m/z 316.1, 318.1 (M -55) .

The synthetic route of 3032-81-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; GENENTECH, INC.; XENON PHARMACEUTICALS INC.; ANDREZ, Jean-Christophe; BICHLER, Paul Robert; CHEN, Chien-An; CHOWDHURY, Sultan; DECKER, Shannon Marie; DEHNHARDT, Christoph Martin; FOCKEN, Thilo; GRIMWOOD, Michael Edward; HEMEON, Ivan William; JIA, Qi; LI, Jun; LIU, Zhiguo; ORTWINE, Daniel F.; SAFINA, Brian; SUTHERLIN, Daniel; SHENG, Tao; SUN, Shaoyi; WHITE, Andrew D.; WILSON, Michael Scott; ZENOVA, Alla Yurevna; ZHU, Jiuxiang; WO2015/78374; (2015); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Some common heterocyclic compound, 123278-03-5, name is 3-Chloro-2-iodobenzoic acid, molecular formula is C7H4ClIO2, 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. name: 3-Chloro-2-iodobenzoic acid

Step 1; A 100-mL flask was charged with 3-chloro-2-iodobenzoic (2.43 g, 8.64 mmol, 0.90 equiv) and thionyl chloride (15 mL). The solution was vigorously stirred, then 1 drop of DMF added and the mixture heated to reflux for 4 h. During this time the acid dissolved to give a pale yellow solution. The cooled mixture was evaporated and toluene (50 mL) added, then removed in vacuo. The evaporation/dissolution with toluene/evaporation procedure was repeated twice and the pale yellow 3-chloro-2-iodobenzoyl chloride was placed on the vacuum line.In a separate flask a toluene (30 mL) solution tert-butyl 4-oxopiperidine-1-carboxylate (2.45 g, 12.32 mmol, 1.25 equiv), 4-methoxybenzylamine (1.352 g, 9.6 mmol, 1.0 equiv) and MgSO4 (20 g) were heated to reflux overnight. The mixture was filtered through a bed of Celite, the cake was washed with toluene (30 mL) and the filtrate was evaporated. The amber residue was dissolved in CH2Cl2 (100 mL) and TEA (1.94 g, 2.7 mL, 19.2 mmol, 2.0 equiv) and DMAP (117 mg, 0.96 mmol, 0.1 equiv) were added. The 3-chloro-2-iodobenzoyl chloride prepared above was dissolved in CH2Cl2 (10 mL) and the resultant solution added to the enamine solution over a 10 min period, then stirred overnight. The reaction was quenched by addition of 1.0 M aq HCl (100 mL) and the mixture was transferred to a separatory funnel. The organic layer was washed with brine, dried over Na2SO4, filtered, and evaporated. The residue was purified by flash chromatography on silica gel (120 g) eluting with 19-71% EtOAc in hexanes tert-butyl 4-(3-chloro-2-iodo-N-(4-methoxybenzyl)benzamido)-5,6-dihydropyridine-1(2H)-carboxylate (3.19 g, 5.47 mmol, 63% yield), contaminated with 5% 3-chloro-2-iodo-N-(4-methoxy]benzyl)benzamide, was isolated as a pale yellow foam.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 123278-03-5, its application will become more common.

Reference:
Patent; Claremon, David A.; Singh, Suresh B.; Tice, Colin M.; Ye, Yuanjie; Cacatian, Salvacion; He, Wei; Simpson, Robert; Xu, Zhenrong; Zhao, Wei; US2011/34455; (2011); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Synthetic Route of 5471-81-8, These common heterocyclic compound, 5471-81-8, name is Methyl 4-iodo-3-methylbenzoate, 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.

Under a protective atmosphere of inert gas, Pd(OAc)2 (2.2 mg, 10 mol%), XPhos (19.1 mg, 20 mol%), NBE-CO2K (3.5 mg, were added to a 4.0 mL reaction flask equipped with a magnetic stir bar. 10 mol%), 3-methyl-4 iodine benzoate Methyl ester (0.2 mmol, 1.0 equiv.), 1,2-epoxydodecane (0.6 mmol, 3.0 equiv.) and dry N-methylpyrrole Alkanone (1.0 mL). The reaction flask was capped and stirred at room temperature for about 5 minutes, after which the mixture was heated to 80 C and stirred 24hour. After the reaction vessel was cooled to room temperature, it was quenched with water (10 mL), extracted with methyl tert-butyl ether (3×10 mL), dried Na2SO4 Dry, filter, and concentrate under vacuum. Purified by column chromatography, the eluent was petroleum ether: ethyl acetate = 50:1 (v/v) to give 7-A Methyl 4-n-decyl-2,3-dihydrobenzofuran-5-carboxylate 45 mg (yellow oily liquid, yield 67%)

The synthetic route of 5471-81-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Wuhan University; Zhou Qianghui; Wu Chenggui; Cheng Honggang; (20 pag.)CN108329285; (2018); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

These common heterocyclic compound, 83171-49-7, name is 3-Chloro-5-iodoaniline, 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. Product Details of 83171-49-7

EXAMPLE 25 Trans-2-carboxy-7-chloro-5-iodo-4-methoxycarbonyl-1,2,3,4-tetrahydroquinoline This compound was prepared by the route outlined in Example 15 and 16 using 3-chloro-5-iodoaniline as starting material (colourless foam); delta (360 MHz, CDCl3), 1.95 (1H, ddd, J=14.4, 12.2 and 5.6 Hz, CHA CHB HC CHD), 2.72 (1H, dm, J=14.4 Hz, CHA CHB HC CHD), 3.76 (3H, s, CH3), 3.98 (1H, dd, J=5.6 and 2.1 Hz, CHA CHB HC CHD), 4.09 (1H, dd, J=12.2 and 3.4 Hz, CHA CHB HC CHD), 6.64 (1H, d, J=1.9 Hz, 6-H or 8-H), 7.20 (1H, d, J=1.9 Hz, 6-H and 8-H); m/e 395 (M+), 290 (100%, M-H, CO2 H, CO2 Me); Found: C, 36.88; H, 3.00; N, 3.38. C12 H11 C1INO4 requires C, 36.44; H, 2.80; N, 3.54%.

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

Reference:
Patent; Merck Sharp & Dohme, Ltd.; US5231102; (1993); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

These common heterocyclic compound, 31599-61-8, name is 4-Iodo-1,2-dimethylbenzene, 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. category: iodides-buliding-blocks

Step 1: (3,4-Dimethyl-phenyl)-phenethyl-amine A dried flask was charged with 21 mg (0.11 mmol) CuI and 1.4 g (4.3 mmol) cesium carbonate under argon. 0.40 ml (3.2 mmol) phenethylamine, 0.5 g (2.1 mmol) 4-iodo-0-xylene in solution in 1 ml dried DMF and finally 0.058 ml (0.43 mmol) 2-acetylcyclohexanone were successively added. The mixture was stirred at room temperature for 24 hours. The mixture was diluted with water. The aqueous layer was extracted twice with ethyl acetate. The combined extracts were dried over Na2SO4, filtered and concentrated in vacuo. The crude oil was purified with flash column chromatography on silica eluding with a gradient formed from heptane and ethylacetate to provide 0.10 g (22%) of the title compound as a yellow oil. MS (m/e): 226.2 (MH+).

The synthetic route of 4-Iodo-1,2-dimethylbenzene has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Knust, Henner; Nettekoven, Matthias; Pinard, Emmanuel; Roche, Olivier; Rogers-Evans, Mark; US2009/36422; (2009); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Some common heterocyclic compound, 450412-29-0, name is 1-Bromo-3-fluoro-2-iodobenzene, molecular formula is C6H3BrFI, 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. Recommanded Product: 450412-29-0

1-bromo-3-fluoro-2-iodobenzene (75 g, 249.3 mmol), and (5-chloro-2-methoxyphenyl)boronic acid (51.1 g, 249.3 mmol) were dissolved in 550 mL of tetrahydrofuran. A 2 M sodium carbonate (Na2CO3) solution (350 mL) and tetrakis(triphenylphosphine)palladium(0) (2.88 g, 2.49 mmol) were added thereto and refluxed for 11 hours. After the reaction was completed, the reaction mixture was cooled to room temperature. The aqueous layer was separated and removed, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The resulting mixture was recrystallized using chloroform and ethanol to obtain Compound A-1 (63.2 g, yield 80%; MS:[M+H]+=314).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 450412-29-0, its application will become more common.

Reference:
Patent; LG CHEM , LTD.; LEE, Jung Ha; LEE, Dong Hoon; PARK, Tae Yoon; CHO, Seong Mi; HEO, Dong Uk; JUNG, Min Woo; (333 pag.)US2020/10476; (2020); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Adding a certain compound to certain chemical reactions, such as: 4387-36-4, name is 2-Iodobenzonitrile, 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 4387-36-4, category: iodides-buliding-blocks

Preparation 1; 4′-Bromo-biphenyl-2-carbonitrile Combine 2-iodobenzonitrile (9. 0g, 38.5 mmol), 4-bromophenylboronic acid (10.4g, 51.8 mmol), 2M aqueous sodium carbonate (20 mL) and tetrakis (triphenylphosphine)- palladium (O) (4. 5g, 3.9 mmol) in 300 mL of dioxane and heat to 80°C under nitrogen with stirring. After 3 hours cool to room temperature and dilute with 900 mL of ethyl acetate. Wash with water (2 x 50mL), brine (1 x 50mL) and dry over sodium sulfate. Filter and evaporate to a yellow solid. Chromatograph on silica gel two times, eluting with a gradient of 100percent toluene to 1/9 ethyl acetate/toluene to give the title compound as a tan solid, 5.42 g (55percent). MS (FAB) = 257 (M) ; HPLC analysis is 95percent.

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

Reference:
Patent; ELI LILLY AND COMPANY; WO2005/70916; (2005); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

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.

[(2-Bromo-4-methyl-phenyl)-difluoro-methyl]-phosphonic acid diethyl ester: A solution of (bromo-difluoro-methyl)-phosphonic acid diethyl ester (25.00 g, 93.6 mmol) in N,N-dimethylacetamide (50 mL) was added drop wise into a suspension of activated zinc (6.12 g, 93.6 mmol) under Argon. The reaction was initiated by heating and kept under 50 C. After the mixture was stirred for 3 h, copper (I) bromide (13.43 g, 93.6 mmol) was added and stirred for 1 h. A solution of 2-bromo-l-iodo-4-methyl-benzene (11.88 g, 40.0 mmol) in N,N-dimethylacetamide (25 mL) was added slowly to the reaction mixture. The resulting suspension was then stirred at room temp for 18 h. Water (100 mL) was added to the reaction mixture and the solution filtered through celite. The filtrate was diluted with EtOAc (250 mL) and organic layer was washed with H20 (50 mL), NaHC03 (5%, 50 mL) and H20 (50 mL). The solvent was removed and the residue was purified by column chromatography on silica gel, eluting with hexanes/EtOAc (4:1) to provide a colorless oil (11.75 g, 82%): .H NMR (300 MHz, CDC13) 8 7.51 (d, 1H), 7.49 (s, 1H), 7.19 (d, 1H), 4.26 (m, 4H), 2.36 (s, 3H), 1.48 (s, 9H), 1.37 (m, 6 H).

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 71838-16-9.

Reference:
Patent; CENGENT THERAPEUTICS, INC.; WO2006/28970; (2006); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com