Month: October 2020

A common heterocyclic compound, 2265-93-2, name is 2,4-Difluoroiodobenzene, molecular formula is C6H3F2I, 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. 2265-93-2.

[0255] 2-Prop-2-ynyl-2,3-dihydro-isoindol-l-one (50.0mg, 0.29mmol) was dissolved in triethylamine (2mL). To this was added Pd(PPh3)4 (13mg, 0.012mmol), Cul (6.7mg, 0.035mmol) and 2,4-difluoro-l-iodo-benzene (52.0uL, 0.438mmol) and the reaction was allowed to stir overnight. The solvent was evaporated and the residue was purified by prep. TLC (30% EtOAc/Hexanes) to afford the title compound (20.0mg, 24%) as a brown oil. XH NMR (300 MHz, CDC13): 5 7.90 (d, 1H), 7.45 (m, 4H), 6.84 (t, 2H), 4.72 (s, 2H), 4.59 (s, 2H).

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

Reference:
Patent; ASTRAZENECA AB; NPS PHARMACEUTICALS, INC.; WO2006/20879; (2006); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

These common heterocyclic compound, 13194-68-8, name is 4-Iodo-2-methylaniline, 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. 13194-68-8

To a solution of 4-iodo-2-methyl-aniline (4.0 g, 17 mmol) and Pd(dppf)2Cl2 (140 mg, 0.17 mmol) in THF (50 mL) was added isopropylmagnisium chloride (25.5 mL, 51.0 mmol) at -78 C and was reacted at reflux for 4 h. The reaction was quenched with a saturated solution of NH4ci, extracted with EtOAc, dried over anhydrous Na2SC>4, filtered, and concentrated to dryness. The residue was purified by flash column chromatography to give the title compound as a brown solid (320 mg, 12%). MS (ESI): mass calcd. for ci0Hi5N, 149.1; m/z found, 150.0 [M+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 13194-68-8.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; ARORA, Nidhi; BACANI, Genesis M.; BARBAY, Joseph Kent; BEMBENEK, Scott D.; CAI, Min; CHEN, Wei; DECKHUT, Charlotte Pooley; EDWARDS, James P.; GHOSH, Brahmananda; HAO, Baoyu; KREUTTER, Kevin; LI, Gang; TICHENOR, Mark S.; VENABLE, Jennifer D.; WEI, Jianmei; WIENER, John J. M.; WU, Yao; ZHU, Yaoping; ZHANG, Feihuang; ZHANG, Zheng; XIAO, Kun; (1000 pag.)WO2017/100668; (2017); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

56096-89-0, Name is 4-Fluoro-2-iodobenzoic acid, 56096-89-0, 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.

To 341 mg (1.24 mmo[) 4-f[uoro-2-iodobenzoic acid in 10 mL DMF were added 472mg (1.24 mmo[) HATU and 590 j.iL (3.40 mmo[) N,N-diisopropy[ethy[amine. Afterstirring for 5 minutes 300 mg (1.13 mmo[) methy[ 5-[(4-aminopheny[)carbamoy[]- 1H-imidazo[e-4-carboxy[ate (Intermediate 015) were added and the mixture was stirred for 8 hours at room temperature. The reaction was poured into water and the aqueous so[ution was extracted three times with DCM/2-propano[e (8:2). The combined organic [ayers were washed with sat. sodium carbonate so[ution and sat. sodiumch[oride so[ution. The organic phase was dried over sodium su[phate, andthe so[vent was removed under reduced pressure to afford the crude materia[ which was purified by f[ash co[umn chromatography to give 518 mg of the tit[e compound as a so[id materia[.

Statistics shows that 4-Fluoro-2-iodobenzoic acid is playing an increasingly important role. we look forward to future research findings about 56096-89-0.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; EIS, Knut; ACKERSTAFF, Jens; WAGNER, Sarah; BASTING, Daniel; GOLZ, Stefan; BENDER, Eckhard; LI, Volkhart Min-Jian; LIENAU, Philip; LIU, Ningshu; SIEGEL, Franziska; BAUSER, Marcus; SUeLZLE, Detlev; HOLTON, Simon; BAIRLEIN, Michaela; BUCHGRABER, Philipp; BALINT, Jozsef; WO2015/150449; (2015); A2;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

A common heterocyclic compound, 116632-39-4, name is 5-Bromo-2-iodotoluene, molecular formula is C7H6BrI, 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. 116632-39-4.

General procedure: To a stirred solution of 6-bromo-3-pyridyl boronic acid (1.25 equiv, 847 mg, 4.20 mmol) in 1,4-dioxane (30 mL) under nitrogen were added 5-bromo-2-iodotoluene (1 g, 3.36 mmol) and tetrakis-(triphenylphosphine)palladium(0) (0.05 equiv, 195 mg, 0.17 mmol). After 5 min of stirring, aqueous Na2CO3 (2.5 equiv, 892 mg, 8.42 mmol) in 5 mL of water was added. Then the mixture was heated to 80 C until the starting material was consumed (TLC). After cooling down to room temperature, the mixture was filtered on Celite and washed with CH2Cl2. The aqueous layer was extracted with EtOAc (2¡Á50 mL). Combined organic layers were washed with saturated aqueous solution of NaCl (50 mL), and dried over MgSO4. Solvent was removed in vacuo and crude product was purified by column chromatography, with 99:1 cyclohexane/EtOAc affording 3c as a white solid (520 mg, 47%).

The synthetic route of 5-Bromo-2-iodotoluene has been constantly updated, and we look forward to future research findings.

Reference:
Article; Perato, Serge; Voisin-Chiret, Anne Sophie; Sopkova-De Oliveira Santos, Jana; Legay, Remi; Oulyadi, Hassan; Rault, Sylvain; Tetrahedron; vol. 68; 7; (2012); p. 1910 – 1917;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

916792-62-6, name is 3-Fluoro-2-iodobenzonitrile, 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. 916792-62-6

Step A: 3-Fluoro-2-(pyrimidin-2-yl)benzonitrile. 2-lodo-4- fluorobenzonitrile (2.5 g, 10.3 mmol) and 2-tributylstannane pyrimidine (3. 10.0 mmol) were combined and dissolved in degassed DME (18 ml) then purged with bubbling N2 for 5 minutes. The reaction was treated withPd(PPh3) (577 mg, 0.5 mmol) and then purged with bubbling for 5 minutes in a sealed vessel and then heated in microwave at 160 C for 90 min. The reaction was cooled and filtered through celite and concentrated to minimum volume and the ppt the formed was diluted with hexanes (40 ml) and cooled to 0 C then filtered. The solid purified (FCC) (20-100% EA / hex) to give 3-fluoro- 2-(pyrimidin-2-yl)benzonitrile. 1 H NMR (400 MHz, CDCI3): 8.93 (d, J = 4.9 Hz, 2H), 8.14 (dd, J = 9.6, 2.7 Hz, 1 H), 7.86 (dd, J = 8.6, 5.3 Hz, 1 H), 7.36 (t, J = 4.9 Hz, 1 H), 7.32 – 7.24 (m, 1 H).

Statistics shows that 916792-62-6 is playing an increasingly important role. we look forward to future research findings about 3-Fluoro-2-iodobenzonitrile.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; BRANSTETTER, Bryan, James; LETAVIC, Michael, A.; LY, Kiev, S.; RUDOLPH, Dale, A.; SAVALL, Brad, M.; SHAH, Chandravadan, R.; SHIREMAN, Brock, T.; WO2011/50202; (2011); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

1878-94-0, Name is 2-(4-Iodophenoxy)acetic acid, 1878-94-0, 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.

3-[2-(4-iodo-phenoxy)acetyl-amino]-benzamideTo (4-iodo-phenoxy)-acetic acid (83.5 mg, 0.3 mmol), 3-aminobe?zamide (61.3 mg, 0.45 mmol), N- (3-dimethylaminopropyl)-N-ethyl carbodmideHCl (EDC) (86.3 mg, 0.45 mmol) and 1-hydroxybenzotriazole (HOBt) (61.3 mg, 0.45 mmol) in DMF (3 ml) was added N, N-dsopropylethyamine, redistilled (DIPEA) (0.08 ml, 0.45 mmol). The mixture was stirred overnight, and then partitioned between ethyl acetate and water. The organic phase was washedwith brine, dried (MgSC>4 anh), and concentrated. The residue was purified by silica gel flash column chromatography (CH2CHkMeOH = 6: 1) to give 3-[2-(4-iodo-phenoxy)acetyl-amino]-benzamide as a white solid (105.1 mg, 88.4% yield). 1H-NMR (DMSOKI6) 10.22 (IH, s, NH), 8.09 (IH, s, aromatic-H), 7.94(1H, s, NH2), 7.79 (IH, d, J =8.1 Hz, aromatic-H), 7.56 – 7.64 (3H, m, aromatic-H), 7.35 – 7.41 (2H, m, aromatic-H, NH2), 6.86 (2H, d, J= 8.7 Hz, aromatic-H), 4.71 (2H5 S3 CH2)., ..

Statistics shows that 2-(4-Iodophenoxy)acetic acid is playing an increasingly important role. we look forward to future research findings about 1878-94-0.

Reference:
Patent; KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY; WO2008/4798; (2008); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

915095-86-2, 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. 915095-86-2, name is (2-Chloro-5-iodophenyl)(4-fluorophenyl)methanone, This compound has unique chemical properties. The synthetic route is as follows.

5-iodo-2-chlorophenyl) (4-fluorophenyl) methanone (18.03 g, 50 mmo 1) was added DMF (90 mL), Ice bath slowly add sodium ethoxide (3.748,1. Eq), After adding the reaction at room temperature for 1.5 h, tlc (after the detection reaction is completed, Ice bath slowly add water (180mL), Stirring crystallization lh, Filter, The filter cake was washed with water (200 mL) Beat with ethanol (50 mL) Filtered and dried to give 16.72 g of the pale yellow solid of compound lib, Yield: 86.5percent Purity: 99.53percent.

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; Shanghai Pharmaceutical Industry Institute; China Pharmaceutical Industry Zongyuan; Ma Shuai; Zhou Weicheng; (7 pag.)CN106928040; (2017); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The chemical industry reduces the impact on the environment during synthesis 52548-14-8, name is 2-Iodo-5-methylbenzoic acid, I believe this compound will play a more active role in future production and life. 52548-14-8

The 1, 2, 3-triazole (3.45g, 50mmol), 2-iodo-5-methyl benzoic acid (5.24g, 20mmol), cesium carbonate (11.72g, 36mmol), trans-N, N ‘-dimethyl -1 , 2-cyclohexanediamine (0.51g, 3. 6mmol), cuprous iodide (0.38g, 2mmol) and N, N-dimethyl formamide (30 ml) are sequentially added to the 100 ml round bottom flask in a single port, the resulting reaction mixture under the protection of nitrogen is gradually heated up to 100 C, reaction 4 hours. Stop the reaction, cooling to room temperature to be reacted, water (150 ml) is diluted, and using ethyl acetate (200 ml ¡Á 2) extraction . Remove organic layer, the aqueous layer with concentrated hydrochloric acid (the mass fraction is 36.5%) acidified to pH to 1-2, then using ethyl acetate (200 ml ¡Á 2) extraction, and combined with the organic layer dried with anhydrous sodium sulfate. Filtering, the filtrate concentrated under reduced pressure, the resulting residue is purified by silica gel column chromatography (dichloromethane / methanol (v / v) = 50/1) to obtain the title compound as yellow solid (2.76g, 68%) .

The chemical industry reduces the impact on the environment during synthesis 52548-14-8. I believe this compound will play a more active role in future production and life.

Reference:
Patent; Guangdong East Sunshine Pharmaceutical Co., Ltd.; Jinchuan, Fei; Gao, Heng; Zhang, Ji; Zhang, Yingjun; (84 pag.)CN105461699; (2016); A;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

77317-55-6, Adding a certain compound to certain chemical reactions, such as: 77317-55-6, name is Methyl 2-amino-5-iodobenzoate, 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 77317-55-6.

To methyl 2-amino-5-iodobenzoate (i-a) (15 g, 54 mmol) was added 200 mL of CH2Cl2, followed by DIEA (9.4 mL, 54 mmol) and a catalytic amount of DMAP. Ethyl 4-chloro-4-oxobutanoate (Rc = Rd = H) (8.5 mL, 60 mmol) was added, and the reaction mixture was allowed to stir at room temperature overnight. The reaction mixture was then poured into 250 mL H2O, and the organic layer was washed with brine, dried over MgSO4, filtered, and concentrated in vacuo to afford ii-a (22 g, 99%) as a pale yellow solid: MS m/z = 406 (M+H).

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, Methyl 2-amino-5-iodobenzoate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; MILLENNIUM PHARMACEUTICALS, INC.; WO2006/41773; (2006); A2;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

74-88-4,Some common heterocyclic compound, 74-88-4, name is Iodomethane, molecular formula is CH3I, 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.

Reference example 27 (2S)-1-methylindoline-2-carboxylic methyl ester (S)-(-)-indoline-2-carboxylic acid (2.0g) was dissolved to a mixture of acetone (20ml) and N, N-dimethylformamide (20ml), and potassium carbonate (6.78g) and methyliodide (3.05ml) were added at room temperature.. The reactive mixture was stirred at room temperature over night, and then filtered.. The filtrate was concentrated by vacuum concentration and the obtained residue was diluted with ethyl acetate.. The solution is poured into water and the water layer has been extracted by ethyl acetate.. The organic layer was sequentially washed with water and saturated brine, and then dried by anhydrous sodium sulfate.. The residue by removal of the solvent was purified by silica gel column chromatography (hexane: ethyl acetate=4:1) to give a title compound (1.7g) having the following physical properties. TLC:Rf 0.70 (hexane: ethyl acetate=7:3); NMR(CDCl3):delta 7.11 (t, J = 7.5 Hz, 1H), 7.05 (d, J = 7.5 Hz, 1H), 6.70 (t, J = 7.5 Hz, 1H), 6.51 (d, J = 7.5 Hz, 1H), 4.05 (t, J = 9.6 Hz, 1H), 3.80 (s, 3H), 3.34 (dd, J = 15.6, 9.6 Hz, 1H), 3.13 (dd, J = 15.6, 9.6 Hz, 1H), 2.84 (s, 3H).

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

Reference:
Patent; ONO PHARMACEUTICAL CO., LTD.; EP1424325; (2004); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com