Category: iodides-buliding-blocks

Electric Literature of 19094-56-5,Some common heterocyclic compound, 19094-56-5, name is 2-Chloro-5-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.

2-Chloro-5-iodobenzoyl chloride (10.7 g, 35.5 mmol) was dissolved in methylene chloride (200 mL). The resulting mixture was cooled in an ice-water bath. To this mixture was added aluminum trichloride (10.4 g, 78.2 mmol) followed by the dropwise addition of a solution of anisole (4.2 g, 38.9 mmol) in methylene chloride (50 mL). After completion of the dropwise addition, the resulting mixture was warmed to room temperature and stirred for 3 hours. The reaction mixture was poured into ice water and quenched. 3 mol / L hydrochloric acid was added to the reaction mixture. The product mixture was separated into an aqueous phase and an organic phase. The aqueous phase was extracted with methylene chloride (150 mL x 2). The organic phases were combined, washed with saturated sodium chloride solution, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The resulting crude product was purified by silica gel column chromatography (ethyl acetate: petroleum ether = 0-1: 100) to give 12.0 g of product in 91% yield.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-Chloro-5-iodobenzoic acid, its application will become more common.

Reference:
Patent; SENJU Pharma Corporation Limited; Woo, Frank; (28 pag.)KR2015/81220; (2015); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Some common heterocyclic compound, 2043-53-0, name is 1-Iodo-1H,1H,2H,2H-perfluorodecane, molecular formula is C10H4F17I, 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. Quality Control of 1-Iodo-1H,1H,2H,2H-perfluorodecane

(Example 1) A mixture of fluoroalkyl alcohols represented by C2F5(CF2CF2)nCH2CH2OH containing one with n=3 in an amount of 80 mol% and one with n=4 in an amount of 20 mol% was produced by a technique of alcoholification of a mixture of C2F5(CF2CF2)nCH2CH2I. 150g (310mmol) of this fluoroalkyl alcohol mixture, 22.3g (260mmol) of acrylic acid, 50g of toluene, 1.48g (7.78mmol) of p-toluenesulfonic acid and 0.05g of hydroquinone were charged into a 300mL glass reactor equipped with a stirrer and subjected to esterification reaction for 4 hours while distilling off water, to give the reaction mixture having a composition as shown in Table 1. This reaction mixture was charged into a still and subjected to distillation using a rectifier with a theoretical plate number of ten(10) and selecting a pressure inside the rectifier and a still temperature within a range of from 0.3 kPa to 15 kPa and a range of from 100C to 160C respectively depending on compounds to be distilled off, so that toluene, acrylic acid, unreacted alcohols, the fluorine-containing acrylic esters (n=3 and n=4) and substances of high boiling points were distilled off in this order. As a result, the mixture after distillation was given as the distillate which was obtained by cutting toluene, acrylic acid and the unreacted alcohols as an initial distillate and the substances of high boiling points as a final distillate, and thereby contained the fluorine-containing acrylic esters as a main component and had a composition as shown in Table 1. In Table 1, the compositions of the reaction mixture and the mixture after distillation were determined by gas chromatography. Table 1 Component Reaction mixture (excluding toluene) (mol%) Mixture after distillation (mol%)C8F17CH2CH2OH 2.19 NDC10F21CH2CH2OH 0.65 0.03C8F17CH2CH2OCOCH=CH2 74.93 79.81C10F21CH2CH2OCOCH=CH2 18.60 19.50 Other substances of high boiling points 3.63 ND As shown in Table 1, of the impurities contained in the reaction mixture, C8F17CH2CH2OH (n=3) and the substances of high boiling points were able to be removed by the distillation. As a result, the mixture of the fluorine-containing acrylic esters with a high purity was obtained. Specifically, only C10F21CH2CH2OH (n=4) was contained as the impurity in an amount of 0.03 mol%. In this example, an yield of the fluorine-containing acrylic esters was 85 mass%.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2043-53-0, its application will become more common.

Reference:
Patent; DAIKIN INDUSTRIES, LTD.; EP1757577; (2007); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

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 723294-75-5 as follows. name: 3-Fluoro-5-iodobenzonitrile

A mixture of compound 1 (15mg, 0.085mmol), compound 2(25mg, 0.1mmol), Cs2CO3 (110mg, 0.34mmol), Pd(dba)2 (5mg, 0.0085mmol) and Xanphos (4mg, 0.0085mol) in DMF(1.0mL) were degassed under N2 and then heated to 100 C for lh. After cooled, the reaction mixture was filtered. The filtrate was washed with H2O, extracted with EtOAc. The organic layer was dried over anhydrous Na2SO4, filtered and concentrated to residue, which was purified by prep-TLC (EA/PE, 1/2, v/v) to give desired compound (13mg, 52% yield). LCMS: m/z, 296.1(M+H)+; 1HNMR (400MHz, CDCl3) delta 4.24~4.44(m, 4H), 6.32~6.35(m, 1H), 6.66 (s, 1H), 6.75(d, J=8.0Hz, 1H), 7.26~7.35(m, 1H), 7.50(d, J=7.6Hz, 1H), 7.64~7.73(m, 1H), 8.62(d, J=4.8Hz, 1H).

According to the analysis of related databases, 723294-75-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; HUA MEDICINE (SHANGHAI) LTD.; CHEN, Li; BALDWIN, John J.; WU, Chengde; SHEN, Chunli; WO2014/124560; (2014); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Adding a certain compound to certain chemical reactions, such as: 400-97-5, name is 1-Iodo-2-nitro-4-(trifluoromethyl)benzene, 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 400-97-5, Recommanded Product: 400-97-5

b Preparation of 2-amino-4-trifluoromethyliodobenzene: A mixture of 225 ml of water, 166 g of iron and 10.03 g of ammonium chloride are heated to reflux. 317 g of 2-nitro-4-trifluoromethyliodobenzene are added thereto over a period of 2 hours, then refluxing is continued for 3 hours 30 minutes when the addition is complete. The whole is allowed to cool then the medium is extracted 4 times with 250 ml of benzene each time. The mixture is then filtered and subsequently decanted. The organic layer is dried and the solvent is evaporated. After distillation, 256 g of 2-amino-4-trifluoromethyliodobenzene are recovered, b.p.: 102 to 114 C., ind (25 C.): 1.556. (Yield: 89.5%).

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.

Reference:
Patent; Adir et Compagnie; US5079245; (1992); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Adding a certain compound to certain chemical reactions, such as: 117832-17-4, name is 2-Iodo-4,5-dimethylaniline, 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 117832-17-4, Application In Synthesis of 2-Iodo-4,5-dimethylaniline

60.8 g of lithium chloride is added to a solution of 15.5 g of [1,4]-benzoquinone in 350 ml of THF, and it is degassed with nitrogen. 3.2 g of palladium acetate and 23.7 g of benzyl acrylate are added and it is degassed with nitrogen for about 30 minutes. Than a solution of 35.1 g of 2-iodo-4,5-dimethylaniline (prepared according to J. Med. Chem. 2001, 44, 3856-3871) in 150 ml of THF is added and it is stirred overnight. It is filtered and the filtrate is evaporated. The solid residue thus obtained is triturated with ether. It is filtered, the filtrate is washed with a solution of NaOH 0.5N and then with water and with brine. It is evaporated and then the solid residue is purified by silica gel chromatography, eluting with a cyclohexane/EtOAc mixture (8/2; v/v). 57.6 g of the expected compound is obtained in the form of a white powder.1H NMR: DMSO-d6 (250 MHz): delta (ppm): 2.14 (3H, s); 2.19 (3H, s); 4.93 (1H, d); 5.18 (2H, s); 7.23 (1H, s); 7.30-7.45 (5H, m); 7.59 (1H, s); 7.72 (1H, dd); 10.05 (1H, d).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2-Iodo-4,5-dimethylaniline, and friends who are interested can also refer to it.

Reference:
Patent; SANOFI; US2012/277205; (2012); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Synthetic Route of 61272-76-2, 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. 61272-76-2, name is 4-Fluoro-2-iodoaniline, This compound has unique chemical properties. The synthetic route is as follows.

General procedure: To the solution of o-iodoaniline derivatives (1.00 mmol) in pyridine methanesulfonyl chloride (1.00 mmol) was added and the reaction mixture was stirred at r.t. for 2 h. Water (100 ml) was then added, and the solution was extracted with ethyl acetate (3 x 10 ml). The organic extracts were washed with water (4 x 50 ml) and brine (50 ml), dried over Na2SO4 and the solvent was distilled off to furnish a viscous mass that was purified by column chromatography on silica gel to get compound 17

The chemical industry reduces the impact on the environment during synthesis 4-Fluoro-2-iodoaniline. I believe this compound will play a more active role in future production and life.

Reference:
Article; Debnath, Sudarshan; Mondal, Shovan; Tetrahedron Letters; vol. 59; 23; (2018); p. 2260 – 2263;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Reference of 54507-44-7,Some common heterocyclic compound, 54507-44-7, name is 2-Iodo-4-(trifluoromethyl)benzoic acid, molecular formula is C8H4F3IO2, 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.

Intermediate AI: S-trifluoromethyl-biphenyM-carboxylic acidA mixture of 2-iodo-4-trifluoromethyl-benzoic acid (CAS: 54507-44-7) (300 mg, 0.949 mmol) phenylboronic acid (239 mg, 1.898 mmol), sodium carbonate (302 mg, 2.847 mmol) and palladium (II) acetate (10.7 mg, 0.0475 mmol) in 4.5 ml water was stirred at room temperature for 48 hours. The mixture was filtered and the filtrate was acidified with HCl 37%. The mixture was stirred at room temperature for 30 minutes. The solid was filtered, washed with water and dried in vacuo to provide 225 mg (89 %) of the title compound as a brown solid. MS(m/e): 264.9 (M+H+).

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-4-(trifluoromethyl)benzoic acid, its application will become more common.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; KOLCZEWSKI, Sabine; PINARD, Emmanuel; WO2011/23667; (2011); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

10297-05-9, name is 1-Chloro-4-iodobutane, 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. Computed Properties of C4H8ClI

4-Chloro-1-(3-pyridyloxy)butane Under a nitrogen atmosphere, a solution of 3-hydroxypyridine (3.50 g, 36.8 mmol) in N,N-dimethylformamide (DMF) (10 mL) was added drop-wise over 5 min to a cold (0-5° C.), stirring slurry of sodium hydride (1.16 g of an 80percent dispersion in mineral oil, 38.6 mmol) in DMF (40 mL). The mixture was allowed to stir and warm to ambient temperature over 1 h. The mixture was then cooled to 0-5° C., and 1-chloro-4-iodobutane (9.67 g, 44.2 mmol) was added drop-wise over 5 min. The resulting dark-brown mixture was stirred at ambient temperature for 2 h. Water (25 mL) was added, followed by saturated NaCl solution (25 mL), and the mixture was extracted with ether (4*50 mL). The combined ether extracts were dried (Na2SO4), filtered, and concentrated by rotary evaporation to a residue that was dried briefly under high vacuum to give 6.89 g (quantitative yield) of an oil.

The synthetic route of 10297-05-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; DULL, GARY MAURICE; REICH, ERIN E.; WAGNER, JARED MILLER; BHATTI, BALWINDER SINGH; CONSILVIO, MICHAEL B.; US2001/31771; (2001); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

5460-32-2, name is 4-Iodo-1,2-dimethoxybenzene, 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: C8H9IO2

General procedure: Rh(PPh3)3Cl (2.5 mol%) and DPPP (0.04 mmol) were transferred into an oven-dried tube(15 mL), which was evacuated and backfilled with N2 (5x). THF(2 mL), H2O (1 mmol), aryl iodides (1.2 mmol), furfural (1 mmol)and amine (1.8 mmol) were added into the tube via syringe and sealed with Teflon plug. The reaction mixture was stirred at 140 C for 12 h. After the reaction was complete, the mixture was concentrated by rotary evaporation. The crude product was purified by column chromatography (EA/PE = 1/20) on a silica gel to afford the desired product.

The synthetic route of 5460-32-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Qi, Xinxin; Zhou, Rong; Ai, Han-Jun; Wu, Xiao-Feng; Journal of Catalysis; vol. 381; (2020); p. 215 – 221;,
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. 689260-53-5, name is 2-Bromo-5-iodo-1,3-dimethylbenzene, This compound has unique chemical properties. The synthetic route is as follows., COA of Formula: C8H8BrI

Under an argon atmosphere, Intermediate 6 (1.20 g, 2.40 mmol), 2-Bromo-5-iodo-1,3-dimethylbenzene (Intermediate 15) (893 mg, 2.88 mmol)(1.68 g, 4.80 mmol, manufactured by Wako Pure Chemical Industries, Ltd.) and copper iodide (91.4 mg, 0.48 mmol, 0.35 mmol) were added to a solution of L-proline (110 mg, 0.96 mmol; manufactured by Wako Pure Chemical Industries, (Manufactured by Wako Pure Chemical Industries, Ltd.) Dimethylformamide (2.4 ml, manufactured by Wako Pure Chemical Industries, Ltd.) was heated to 110 C under an argon atmosphere for 48 hours. to the next,After cooling to room temperature, saturated aqueous ammonium chloride solution (30 ml) and dichloromethane (100 ml) were added to the reaction mixture and the layers were separated. The organic layer was dried over magnesium sulfate and the residue was purified by silica gel column chromatography (dichloromethane 20% Hexane 80%) to obtain Intermediate 16 as pale yellow crystals (1.49 g, yield 91%).

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 689260-53-5.

Reference:
Patent; Kokuritsu Daigaku Hojin Kyushu Daigaku; Kaji, Hironori; Suzuki, Hajime; Suzuki, Katsuaki; Oheiwa, Hajime; Wakamiya, Atsushi; Fukushima, Tatsuya; Suzuki, Huritz; Murata, Yaseujiro; Sieje, Kacheuyuki; Adachi, Jihaya; (48 pag.)KR2015/123907; (2015); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com