Tag: M.W=200-300

These common heterocyclic compound, 202865-85-8, name is 1-Bromo-4-iodo-2-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. COA of Formula: C7H6BrI

9,9-Dimethyl-9,10-dihydroacridine (2.09 g, 10 mmol), 2-bromo-5-iodobenzene (1.57 mL, 2.07 g/ml, 11 mmol), cuprous iodide ( 0.38g, 0.2mmol)Sodium tert-butoxide (1.92 g, 20 mmol) was added to the reaction flask, and nitrogen gas was exchanged three times (10 min/time), and the solvent (1,4-dioxane) was injected under a nitrogen atmosphere.After the raw material is partially dissolved, inject 2ml.1,2-diaminocyclohexane (coordinating agent),After the injection, the reaction was refluxed at 110 C for 6 h, extracted, concentrated, and powdered.Purification by column chromatography gave a white solid product 2, yield 70%.

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

Reference:
Patent; South China University of Technology; Tang Benzhong; Zhao Zujin; Hu Shimin; Qin Anjun; Hu Rongrong; Wang Zhiming; (24 pag.)CN109593079; (2019); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

These common heterocyclic compound, 202865-85-8, name is 1-Bromo-4-iodo-2-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. category: iodides-buliding-blocks

To a 2:1 (v/v) toluene: ethanol solution (0.034 M) of methyl 3-methyl-2 -(4,4,5,5- tetramethyl-l,3,2-dioxaborolan-2-yI)benzoate (1 eq.) from the previous step and 2- bromo-5-iodotoluene (1.2 eq.) was added was added trans-bis(triphenylphospliine) palladium(II) bromide (0.12 eq.). The vessel was repeatedly evacuated and back-filled with nitrogen. Finally, Na2C03 (2 M aq. solution, 3 eq.) was added and the resulting mixture was heated at 50 C for 12 h. The now black suspension was cooled to RT, diluted with ether and quenched with 10% aq. HC1. The aqueous layer was separated and back-extracted with ether. The combined organic extracts were then washed further with 1 N aq. NaOH, water and brine, dried over Na2S04, filtered and the filtrate concentrated in vacuo. Purification of the crude product by way of flash chromatography (Si02, Hex -> 1 :1 (v/v) Hex: EtOAc) afforded the title compound as a colorless oil.

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

Reference:
Patent; MERCK FROSST CANADA LTD.; CHEN, Austin; ASPIOTIS, Renee; MCKAY, Daniel; HAN, Yongxin; FOURNIER, Pierre-Andre; WO2011/57382; (2011); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Adding a certain compound to certain chemical reactions, such as: 33348-34-4, name is 4-Amino-3-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 33348-34-4, HPLC of Formula: C7H5IN2

General procedure: An oven-dried flask was charged with o-iodoaniline (13 mmol), the corresponding benzyl bromide(10 mmol), NaHCO3 (20 mmol), and DMF (20 mL). The mixture was stirred at 50 C under air for 3-4 h.After the completion of the reaction (monitored by TLC), the reaction mixture was cooled to ambienttemperature and 15 mL water was added to the mixture, then extracted by EtOAc for 3 times (3 ¡Á 30 mL).The combined extracts were washed with brine, dried over Na2SO4, and the solvent was removed in vacuoto provide a crude product, which was purified by column chromatography on silica gel to afford pure 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, 4-Amino-3-iodobenzonitrile, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Chen, Zhengkai; Li, Hongli; Cao, Gangjian; Xu, Jianfeng; Miao, Maozhong; Ren, Hongjun; Synlett; vol. 28; 4; (2017); p. 504 – 508;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Reference of 622-50-4,Some common heterocyclic compound, 622-50-4, name is N-(4-Iodophenyl)acetamide, molecular formula is C8H8INO, 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 nitrogen atmosphere, copper hydroxide (20 mol%, 2.5 mg) and a magnetite were added to a previously baked 10 mL glass pressure tube. Then, N,N-dimethylformamide (0.5 mL), 4-iodoacetanilide (0.125 mmol, 1.0 equiv., 32.6 mg) and phenylsilane (3.0 equiv., 40.6 mg) were added. The pressure tube was sealed and the tube air was removed and charged with carbon dioxide (5.0 equiv., 15 mL) and ammonia gas (0.67 mmol, 5.0 equiv., 15 mL). After the addition, the glass pressure tube was placed in a metal module that had been preheated to 160C and stirred for 10 hours. After the reaction was completed, the reaction system was cooled to room temperature and the pressure was slowly released. Using dodecane as an internal standard, the yield of the gas chromatograph was 97%.

The synthetic route of 622-50-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Chinese Academy Of Sciences Lanzhou Chemical Physics Institute Suzhou Institute; Li Yuehui; Wang Hua; Dong Yanan; Ke Lisitian¡¤shanduofu; (20 pag.)CN108017557; (2018); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Electric Literature of 13421-00-6, 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 13421-00-6 as follows.

General procedure: A mixture of benzonitrile(2.0 mmol) and o-iodobenzoic acid (2.0 mmol) and [bmIm]OH (35mol) was stirred at room temperature for (3-5) h. After completion of reaction as indicated byTLC, 20mL of water was added to the reaction mixture and stirred well. The product was extracted with ether (3¡Á20 mL). The combined organic layers were dried over anhydrous Na2SO4 to afford the crude product, this crude product was taken to column in order to obtain analytically pure compound 4(a-m)(77-91%). After isolation of the product, the remaining aqueous layer containing the ionic liquid was washed with ether (2x10mL) to remove organic impurity and filtered. The filtrate was extracted with dichloromethane(2¡Á10mL), dried over MgSO4 and evaporated under reduced pressure to afford [bmIm]OH, which was reused five times in subsequent runs without further purification.

According to the analysis of related databases, 13421-00-6, the application of this compound in the production field has become more and more popular.

Reference:
Article; Waseem, Malik Abdul; Shireen; Srivastava, Anjali; Srivastava, Arjita; Rahila; Siddiqui; Tetrahedron Letters; vol. 55; 44; (2014); p. 6072 – 6076;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

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. 620621-48-9, name is Methyl 2-chloro-5-iodobenzoate, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: Methyl 2-chloro-5-iodobenzoate

General procedure: This compound was prepared using a method analogousto that of Example 8 (intermediate 8.1), 2-methyl-2Hpyrazol-3-ylamine replacing 4-aminopyrimidine except thatthe reaction mixture was stirred for 2 days at 80 C. LC-MS (B): tR=0.64 min; [M+H]+: 266.02

According to the analysis of related databases, 620621-48-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Actelion Pharmaceuticals Ltd.; Hilpert, Kurt; Hubler, Francis; Murphy, Mark; Renneberg, Dorte; US2014/73651; (2014); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, SDS of cas: 88-67-588-67-5, Name is 2-Iodobenzoic acid, SMILES is O=C(O)C1=CC=CC=C1I, belongs to iodides-buliding-blocks compound. In a article, author is Drozd, Anatoliy V., introduce new discover of the category.

Spectrophotometric determination of trace amounts of iodide-ions in form of ionic associate with brilliant green using electrochemical oxidation

A combined method involving electrochemical oxidation of iodide to iodate at a platinum electrode followed by extraction in CCl4 of ionic associates of iodine-iodide complexes with brilliant green, formed in excess of iodide, was developed for the spectrophotometric quantification of iodide. The slope of the calibration curve yields a molar extinction coefficient of epsilon = 3.10(5) L mol(-1)cm(-1). This method can be used for the quantification of iodide in the concentration range of 3.10(-7) – 3.10(-6) mol L-1 with a detection limit of 5.10(-8) mol L-1. The interfering effect of other ions on the determination of the iodide concentration was also investigated. The method was successfully applied for the determination of iodide in real samples of NaCl and spring water. Relative standard deviation is 1 – 2%.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 88-67-5. SDS of cas: 88-67-5.

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Recommanded Product: 2-Iodobenzoic acid, 88-67-5, Name is 2-Iodobenzoic acid, SMILES is O=C(O)C1=CC=CC=C1I, in an article , author is Liu, Xue-Wei, once mentioned of 88-67-5.

Trace determination of mutagenic alkyl toluenesulfonate impurities via derivatization headspace-GC/MS in an active pharmaceutical ingredient of a candidate drug

This study aims to optimize sodium iodide (Nal) derivatization headspace-GC/MS described in European Pharmacopoeia by using vitamin C as an alternative antioxidant for the determination of mutagenic alkyl toluenesulfonate impurities in an active pharmaceutical ingredient (API) of a candidate drug with an artemisinin derivative. Alkyl toluenesulfonates are transformed into their corresponding alkyl iodides (methyl iodide, ethyl iodide, propyl iodide, and isopropyl iodide) by utilizing the derivatization reagent Nal. Results show that the MS response of methyl iodide is a critical indicator of method robustness because of the deteriorating effects of methyl iodide on stability when sodium thiosulfate is used as an antioxidant originally described in the pharmacopoeia. With vitamin C as a newly developed antioxidant, the robustness of this method is improved significantly. The optimized method is further validated and applied successfully for the quality control and safety of the API of an artemisinin derivative. (C) 2018 Elsevier B.V. All rights reserved.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 88-67-5, you can contact me at any time and look forward to more communication. Recommanded Product: 2-Iodobenzoic acid.

In an article, author is Qian, Qingli, once mentioned the application of 3058-39-7, COA of Formula: C7H4IN, Name is 4-Iodobenzonitrile, molecular formula is C7H4IN, molecular weight is 229.02, MDL number is MFCD00051310, category is iodides-buliding-blocks. Now introduce a scientific discovery about this category.

Direct removal of trace ionic iodide from acetic acid via porous carbon spheres

The main purpose of this paper is to report the direct removal Of trace ionic iodide (I(-)) from acetic acid through porous carbon spheres (PCS) derived from the carbonization of poly(vinylidene chloride). The surface morphology and pore size distribution of the PCS are distinct from activated carbon (AC); thus they possess the peculiar performance of removing ionic iodide from acetic acid. The easy reach of micropores in the PCS was different from that of AC, but similar to that of activated carbon fiber (ACF). The iodide removal process has a strong relation with temperature, which is a typical feature of physical adsorption. The ionic iodide content in acetic acid used in the adsorption experiment was at the parts Per billion level, and the factors influencing the adsorption are discussed in detail. (C) 2008 Elsevier Inc. All rights reserved.

If you are interested in 3058-39-7, you can contact me at any time and look forward to more communication. COA of Formula: C7H4IN.

Chemistry is an experimental science, SDS of cas: 88-67-5, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 88-67-5, Name is 2-Iodobenzoic acid, molecular formula is C7H5IO2, belongs to iodides-buliding-blocks compound. In a document, author is Zhao, Yinlong.

A review on the mechanism of iodide metabolic dysfunction in differentiated thyroid cancer

The incidence of differentiated thyroid cancer (DTC) has been increasing rapidly worldwide, and the risk factors remain unclear. With the growing number of patients with DTC, the related issues have been gradually highlighted. (131)Iodide (I-131) is an important treatment for DTC and has the potential to reduce the risk of recurrence. 131I is also an effective treatment for distant metastases of thyroid carcinoma. However, iodide metabolism dysfunction in metastatic foci causes patients to lose the opportunity of I-131 treatment. This article reviews the related mechanisms of iodide metabolism dysfunction in DTC cells and summarizes the clinical transformation progression.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 88-67-5, in my other articles. SDS of cas: 88-67-5.