Tag: M.W=200-300

Related Products of 3032-81-3, These common heterocyclic compound, 3032-81-3, name is 1,3-Dichloro-5-iodobenzene, 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.

Example 26 3-(3,5-Dichloro-phenylamino)-N-phenyl-benzamide A mixture of 3-amino-N-phenyl-benzamide (2.0 g, 9.4 mmol), 3,5-dichloroiodobenzene (2.65 g, 9.7 mmol), N-ethylmorpholine (1.1 g, 9.5 mmol), and copper(II) acetate (0.1 g, 0.6 mmol) in N,N-dimethylformamide (6 mL) was stirred under an inert atmosphere and heated to reflux. After 120 hours, the mixture was allowed to cool and was stirred into water (300 mL) and acidified with concentrated hydrochloric acid. The mixture was extracted with dichloromethane (300 mL) and the extract separated and washed successively with 2N hydrochloric acid, water, 0.5 M aqueous potassium carbonate, water, and saturated aqueous sodium chloride, then dried over MgSO4. The solution was filtered and stripped of solvent under reduced pressure to leave a solid residue which was subjected to chromatography on a column of silica gel in chloroform to afford the product (0.1 g); m.p. 164-165¡ã C. after recrystallization from ethyl alcohol. Calculated for C19H14Cl2N2O: C, 63.88; H, 3.95; N, 7.84. Found: C, 63.64; H, 4.04; N, 7.61.

Statistics shows that 1,3-Dichloro-5-iodobenzene is playing an increasingly important role. we look forward to future research findings about 3032-81-3.

Reference:
Patent; Warner-Lambert Company; US6268387; (2001); B1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

156150-67-3, name is 2-Chloro-1-fluoro-4-iodobenzene, 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. Quality Control of 2-Chloro-1-fluoro-4-iodobenzene

A mixture of 2-chloro-1-fluoro-4-iodobenzene (7.0 g, 27.3 mmol), 4, 4, 5, 5-tetramethyl-2- (1, 4-dioxaspiro [4.5] dec-7-en-8-yl) -1, 3, 2-dioxaborolane (7.2 g, 27.1 mmol), Pd (dppf) Cl2 (1.0 g, 1.36 mmol) and Cs2CO3 (14.0 g, 42.9 mmol) in 1, 4-dioxane (200 mL) was heated at 95 for 2 hours. The mixture was filtered and the filtrate was concentrated and the resulted residue was purified by column chromatography (PE: EA=50: 1 to 20: 1) to give product (3.8 g, crude) as a colorless oil.

The synthetic route of 156150-67-3 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; BEIGENE, LTD.; WANG, Hexiang; GUO, Yunhang; REN, Bo; WANG, Zhiwei; ZHANG, Guoliang; ZHOU, Changyou; (353 pag.)WO2018/54365; (2018); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Application of 31599-60-7, The chemical industry reduces the impact on the environment during synthesis 31599-60-7, name is 1-Iodo-2,3-dimethylbenzene, I believe this compound will play a more active role in future production and life.

To a solution of 1-iodo-2,3- dimethylbenzene (8) [prepared according to Chen, Y et al. Org. Lett. 2007, 9, 1899] (1 .93 g, 8.32 mmol) in carbon tetrachloride (40 mL) was added NBS (3.67 g, 20.62 mmol), AIBN (0.070 g, 0.43 mmol) and the resulting mixture was gently refluxed by irradiation with a halogen lamp (500 W) for 4 h. The precipitate was filtered and washed with a small amount of carbon tetrachloride. The filtrate was concentrated under reduce pressure, the obtained residue was dissolved in EtOAc ( 1 00 ml), successively washed with 10% NaOH solution (20 mL), water (2 x 20 ml), 10% Na2S203 solution (20 mL), water (20 mL), brine (20 raL), and dried (Na2SC>4). The solvent was evaporated and the residue was purified by column chromatography on silica gel (eluent petroleum ether) to give 1 .89 g (58.3%) of compound 9. NMR (CDC13) delta: 7.84 (dd, J=8.1 , 1 .1 Hz, 1 H), 7.33 (dd, J=7.6, 1 .1 Hz, l H), 6.97 (t, J=7.8 Hz, 1 H), 4.85 (s, 2H), 4.66 (s, 2H). The product contained ca. 15-20% of an inseparable impurity (supposedly l -bromo-2,3-bis(bromomethyl)benzene).A mixture of 1,2-bis(bromomethyl)-3-iodobenzene (9) (2.50 g, 6.41 mmol), diethyl 2-acetamidomalonate (1 .39 g, 6.41 mmol), and K2C03 (2.22 g, 1 6.06 mmol) in acetonitrile (40 mL) was refluxed for 70 h. The mixture was allowed to cool to ambient temperature, the precipitate was filtered and washed with a small amount of acetonitrile. The filtrate was concentrated under reduce pressure, the obtained residue was dissolved in EtOAc (100 mL), washed successively with saturated NaHC03 solution (30 mL), water (2 x 30 mL), brine (30 mL), and dried (Na2S04). The solvent was evaporated and the residue was purified by column chromatography on silica gel (eluent petroleum ether-ethyl acetate, gradient from 20: 1 to 20:6) to give 2 g of oil. The oil was dissolved in diethyl ether and kept in a refrigerator overnight. The precipitate was filtered and dried to give 0.4 g (14%) of a regioisomer diethyl 2-acetyl-5-iodo-l ,4-dihydroisoquinoline-3,3(2H)-dicarboxylate. NMR (CDC13) delta: 7.76 (d, J=8.0 Hz, 1H), 7.13 (d, J=7.5 Hz, 1 H), 6.94 (t, J = 7.7 Hz, 1H), 4.65 (s, 2H), 4.19 (q, J=7.1 Hz, 2H), 4.16 (q, J=7.1 Hz, 2H), 3.56 (s, 2H), 2.28 (s, 3H), 1 .22 (t, J=7.1 Hz, 3H), 1.22 (t, J=7.1 Hz, 3H). LCMS (ESI) m/z: 446 [M+H]+. The filtrate was evaporated and the residue was purified by column chromatography on silicagel (eluent petroleum ether-ethyl acetate, gradient from 20: 1 to 20:6) to give 0.95 g (33.2%) of compound (10).

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-Iodo-2,3-dimethylbenzene, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; LATVIAN INSTITUTE OF ORGANIC SYNTHESIS; JIRGENSONS, Aigars; LOZA, Einars; CHARLTON, Michael; FINN, Paul William; RIBAS DE POUPLANA, Lluis; SAINT-LEGER, Adelaide; (76 pag.)WO2016/129983; (2016); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

51628-12-7, 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. 51628-12-7, name is 2-(4-Iodophenyl)acetonitrile, A new synthetic method of this compound is introduced below.

General procedure: A stirred mixture of 4-iodophenylacetonitrile (35), arylboronic acid (36-45) (1.1 equiv), Pd(PPh3)4 (0.03 equiv), KBr (1.1 equiv), and K3PO4 (2.5 equiv) in dioxane (5 mL/mmol) was purged with N2 for10 min at room temperature and then stirred overnight at 85 C under N2. The mixture was diluted with water and extracted with AcOEt. The organic phase was washed three times with water, dried (Na2SO4), and evaporated under vacuum. The residue was chromatographedon silica gel.

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:
Article; Ortar, Giorgio; Morera, Enrico; De Petrocellis, Luciano; Ligresti, Alessia; Schiano Moriello, Aniello; Morera, Ludovica; Nalli, Marianna; Ragno, Rino; Pirolli, Adele; Di Marzo, Vincenzo; European Journal of Medicinal Chemistry; vol. 63; (2013); p. 118 – 132;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

612-55-5,Some common heterocyclic compound, 612-55-5, name is 2-Iodonaphthalene, molecular formula is C10H7I, 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.

In an open vial with pressure-release top, a stirred mixture of 2- iodonaphthylene (Aldrich, St. Louis, MO) (64 mg, 0.25 mmol), palladium(II) acetate (5.5 mg, 0.025 mmol), 2-dicyclohexylphosphino-2′,6′-diisopropoxybiphenyl (23 mg, 0.05 mmol), K2C03 (138 mg, 1.0 mmol) and ira/i5,-2-(trifluoromethyl)cyclopropylboronic acid MIDA ester (99 mg, 0.38 mmol) in toluene (2.5 mL) and H20 (0.5 mL) was de-gassed with N2 for 15 minutes, then the reaction mixture placed under nitrogen, sealed and heated to 100 C and stirred for 6 hours. After allowing to cool, the reaction mixture was diluted with H20 (15 mL) and EtOAc (20 mL), filtered through Celite and the filter cake washed with EtOAc (2 x 20 mL). The filtrate was partitioned and the aqueous layer extracted with EtOAc (2 x 15 mL). The combined organic extracts were dried (Na2S04), filtered and concentrated under vacuum to leave a crude residue. The residue was purified by preparative thin-layer chromatography (2 prep TLC plates used) using EtOAc / hexane (1:99) as eluent to give the product (46.2 mg, 78%) as a solid.[00215] Data identical to above in Example 5.

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

Reference:
Patent; RIGEL PHARMACEUTICALS, INC.; DUNCTON, Matthew; SINGH, Rajinder; WO2012/75316; (2012); A2;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

A common heterocyclic compound, 25245-35-6, name is 2-Iodo-1,4-dimethoxybenzene, molecular formula is C8H9IO2, 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. 25245-35-6.

General procedure: A mixture of the styrene (3 mmol), the halogenated benzene (3 mmol), triethanolamine (3 mmol) and Pd (II) acetate (0.03 g) was stirred under argon at 100 C for 24 h. The reaction was cooled to 25 C, quenched by the addition of dil. aq. hydrochloric acid (2 N, 10 ml), and extracted with ether (3 ¡Á 100 ml). The organic phases were dried (Na2SO4), the solvents evaporated, and the crude product was subjected to chromatography (silica gel, hexane/ethyl acetate mixtures).

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

Reference:
Article; Csuk, Rene; Albert, Sabrina; Siewert, Bianka; Schwarz, Stefan; European Journal of Medicinal Chemistry; vol. 54; (2012); p. 669 – 678;,
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. 103440-52-4, name is Methyl 2-Iodo-5-methylbenzoate, A new synthetic method of this compound is introduced below., 103440-52-4

In a dry Schlenk Tube at RT under nitrogen are successively charged 2-iodo-5- methylbenzoic acid methyl ester (13.765 mmol, 1 eq), Cul (2.753 mmol, 0.2 eq), CsF (27.529 mmol, 2 eq), 2-tributylstannylpyridine (20.647 mmol, 1.5 eq), Pd(PPh3)4 (1.376 mmol, 0.1 eq) and DMF (60 mL). The resulting suspension is stirred at 90C overnight. The obtained reaction mixture is diluted with EtOAc and filtered through a short pad of Celite. A solution of sat. aq. NaHC03 is then added to the filtrate and the aq. phase extracted with EtOAc (3 times). The combined organic layers are washed with H20 and brine, dried over Na2S04, filtered and concentrated under reduced pressure. Purification is achieved by FC (EtOAc/Heptane 1 :4 to 3:7) to give methyl 5-methyl-2-(pyridin-2-yl)benzoate (2.64 g) as a brown oil. LC-MS (conditions A): tR = 0.67 min, [M + 1 ]+ = 228.07.

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; ACTELION PHARMACEUTICALS LTD; BOSS, Christoph; BROTSCHI, Christine; GUDE, Markus; HEIDMANN, Bibia; SIFFERLEN, Thierry; WILLIAMS, Jodi, T.; WO2013/182972; (2013); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Adding some certain compound to certain chemical reactions, such as: 3032-81-3, name is 1,3-Dichloro-5-iodobenzene, 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 3032-81-3. 3032-81-3

General procedure: A mixture of N-picolinoylcyclododecylamine (3) (0.2 mmol, 57.6 mg), aryl iodide4 (0.4 mmol), Ag2CO3 (0.3 mmol, 82.7 mg), and Pd(OAc)2 (0.04 mmol, 9.0 mg)in t-AmOH (1 mL) was stirred for 48 h at 110 C in the dark. After dilution withEtOAc, the mixture was filtered and the filtrate was concentrated in vacuo. Theresidue was purified by preparative TLC (EtOAc/CHCl3/hexane = 1:1:8) to givethe corresponding product. Trans-3-(4-nitrophenyl)-N-picolinoylcyclododecylamine[5a(trans)]

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 1,3-Dichloro-5-iodobenzene.

Reference:
Article; Seki, Atsushi; Tetrahedron Letters; vol. 58; 45; (2017); p. 4232 – 4235;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

20776-54-9, name is 2-Amino-4-iodobenzoic acid, 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. 20776-54-9

Embodiment 22 2-amino-4-((4,4-dimethyl-1-oxothiochroman-6-yl)ethynyl)benzoic acid 1-oxo-6-ethynyl-4,4-dimethylbenzothiopyran (263mg, 1.0mmol) and 2-amino-4-iodobenzoic acid (262mg, 1.2mmol) were added to a flask, followed by addition of Pd(PPh3)2Cl2 (42mg, 0.06mmol) and CuI (23mg, 0.0412mmol). After the flask was purged with argon for 3 times to remove oxygen, 4mL dry DMF and 0.2mL dry Et3N were added via syringe. Then the reaction was continued at 70C for 8 h and monitored by TLC. After completion of the reaction, the reaction solution was cooled to room temperature and the reaction was quenched with saturated ammonium chloride solution. The mixture was diluted with ethyl acetate, washed with saturated ammonium chloride solution and saturated sodium chloride solution. The organic phase was dried over anhydrous sodium sulfate, filtered, concentrated and purified by flash column chromatography (PE:EtOAc = 50:1) to give the product (275 mg, 78%). 1H NMR (500 MHz, pyridine) delta 8.37 (d, J = 8.1 Hz, 1H), 7.92 (d, J = 8.0 Hz, 1H), 7.86 (s, 1H), 7.59 (s, 1H), 7.36 (s, 1H), 7.03 (d, J = 8.1 Hz, 1H), 5.67 (s, 1H), 3.20 – 3.14 (m, 1H), 3.11 – 3.05 (m, 1H), 2.38 (ddd, J = 14.2, 10.3, 1.7 Hz, 1H), 1.74 – 1.68 (m, 1H), 1.26 (s, 3H), 1.17 (s, 3H); 13C NMR (126 MHz, pyridine) delta 171.06, 152.34, 145.52, 140.46, 132.80, 131.65, 130.43, 130.20, 127.92, 126.32, 119.79, 118.58, 112.43, 91.82, 90.33, 55.01, 43.59, 34.63, 30.93, 30.63, 29.80. ESI(+)-MS: 354.3 [M+1]+.

Statistics shows that 20776-54-9 is playing an increasingly important role. we look forward to future research findings about 2-Amino-4-iodobenzoic acid.

Reference:
Patent; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; Huazhong University of Science and Technology; CAO, Xin; YU, Biao; WANG, Ning; CHEN, Junwei; (88 pag.)EP3428155; (2019); A1;,
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. 54811-38-0, name is 5-Iodo-2-methylbenzoic acid, A new synthetic method of this compound is introduced below., 54811-38-0

A solution of 5-iodo-2-methylbenzoic acid (50.0 g, 190.0 mmol) in thionyl chloride (250 mL) was heated at reflux for 3 hours. The completion of reaction was observed by TLC (by converting acid chloride to methyl ester). The thionyl chloride was evaporated and the residue was charged to the reaction mixture contained 2-amino pyridine (19.72 g, 209.8 mmol), triethyl amine (82.75 mL, 572.5mmol) in dry ethyl acetate (500 mL) at 0C. The reaction mixture was stirred at RT(room temperature) for 12 hours. The completion of reaction was observed byTLC. The reaction mixture was taken in water (2000 mL), extracted with ethylacetate (2 x 1000 mL). The combined organic layer was washed with water (2 x1000 mL), brine, dried over sodium sulphate and evaporated. The crude material was purified by column chromatography using ethyl acetate in petroleum ether to afford 5-iodo-2-methyl-N-(pyridin-2-yl)benzamide intermediate 6 (30.0 g, 48 %) as pale yellow solid.

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; SANOFI; PASCAL, Cecile; PELLET, Alain; COURTEMANCHE, Gilles; CAMPBELL, Simon; (78 pag.)WO2019/8027; (2019); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com