Iodides-buliding-blocks

Reference of 42048-11-3,Some common heterocyclic compound, 42048-11-3, name is 2-Chloro-6-iodotoluene, molecular formula is C7H6ClI, 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.

To a solution of 20a (5.0 g, 19.8 mmol) in CCL (50 mL) were added BPO (48.0 mg, 0.2 mmol) and NBS (3.52 g, 19.8 mmol) at room temperature. Tire resulting mixture was stirred at 90 C overnight, cooled to room temperature, concentrated. Tire residue was purified by silica gel chromatography column (PE) to afford 20b (3.0 g, 46%) as a white solid.

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-6-iodotoluene, its application will become more common.

Adding a certain compound to certain chemical reactions, such as: 1189352-83-7, name is 3-Chloro-5-iodobenzotrifluoride, 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 1189352-83-7, Quality Control of 3-Chloro-5-iodobenzotrifluoride

A mixture of 1-chloro-3-iodo-5-(trifluoromethyl)benzene (150 g, 489 mmol), (R)- ethyl 5-oxopyrrolidine-2-carboxylate (108 g, 683 mmol), copper (I) iodide (23.3 g, 122 mmol), CsCO3 in 1,4-dioxane (1 L) was stirred under an atmosphere of nitrogen followed by the addition of N,N’-diemthyl-1,2-ethanediamine (26 mL, 245 mmol). The mixture was heated to 40 C for 4 hours, followed by the addition of copper (I) iodide (11.4 g, 60 mmol) and N,N’-diemthyl-1,2- ethanediamine (13 mL, 123 mmol) and heating at 40 C was continued overnight. The was diluted with water (600 mL) and saturated aqueous NH3 and MTBE (600 mL) and the mixture was stirred for 10 min and allowed to separate into two distinct layers. The aqueous layer was separated and extracted with MBTE (2 x 300 mL) and the combined organic layers were washed sequentially with a mixture of water (150 mL)/ saturated brine (15 mL), followed by 2 N HCl (300 mL) and then water (230 mL). The organic phase was dried over Na2SO4, filtered and concentrated in vacuo to afford 10 as an oil. 1H NMR (400 MHz, CHLOROFORM-d) delta: 7.85 (t, J= 2.13 Hz, 1H), 7.63 (t, J= 2.01 Hz, 1H), 7.41 (t, J= 1.88 Hz, 1H), 4.73 (dd, J= 2.89, 8.91 Hz, 1H), 4.18 – 4.29 (m, 2H), 2.73 – 2.83 (m, 1H), 2.57 – 2.65 (m, 1H), 2.49 – 2.55 (m, 1H), 2.19 – 2.31 (m, 1H), 1.68 (s, 1H), 1.22 – 1.32 (m, 3H). MS: 335; MS Found: 335.9([M+1]+.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 3-Chloro-5-iodobenzotrifluoride, and friends who are interested can also refer to it.

Some common heterocyclic compound, 1252046-13-1, name is 2-Bromo-5-iodobenzonitrile, molecular formula is C7H3BrIN, 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. SDS of cas: 1252046-13-1

Under nitrogen condition, the compound B was dissolved in dioxane, and the compound A (0.9 equivalent) was added. Potassium phosphate (4.0 equivalent) was added, and Cut (0.2 equivalent) and 1,2-diaminocyclohexane (0.2 equivalent) were added. The mixture was refluxed and stirred for 12 hrs, and then the reaction was finished. The resultant was extracted using an organic solvent, and the organic solvent was removed. The resultant was columned and reprecipitated such that the compound C was obtained.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1252046-13-1, its application will become more common.

Related Products of 447464-03-1, A common heterocyclic compound, 447464-03-1, name is 2-Fluoro-3-iodobenzoic acid, molecular formula is C7H4FIO2, 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.

[0459] A solution of Example 73a (3.0 g, 11.2 mmol) and KBr03 (3.7 g, 22.0 mmol) in 15 mL of cone. H2S04. The reaction mixture was stirred for 2 h at 90C; LC-MS (BD01052-127) analysis showed Example 73a was consumed; the mixture was poured into 250 mL water and stirred for 10 min. The mixture was extracted with EA (250 mL * 3). The combined organic phase was dried over Na2S04, filtrated and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel chromatography to give the desired product (Example 73b, 3.5 g, yield: 65%) as a yellow solid.LCMS [M+l]+ = 344.0

The synthetic route of 447464-03-1 has been constantly updated, and we look forward to future research findings.

Synthetic Route of 52914-23-5, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 52914-23-5 name is 2-(4-Iodophenyl)ethanol, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

A solution of N,N(-bis(tert-butoxycarbonyl)-S-methylisothiourea (937 mg, 3.2 mmol), triphenylphosphine (5.0 g, 18 mmol) and 2-[(4-iodophenyl)ethyl]alcohol (1a, 800 mg, 3.2 mmol) were stirred in anhydrous THF (16 mL) at room temperature under nitrogen atmosphere. DIAD (3.8 ml, 18 mmol) was slowly added to reaction mixture and reaction was stirred at room temperature for 24 h. The reaction mixture was filtered through a Celite pad with washing CH2Cl2 and the solvent was removed under reduced pressure. The residue was purified by flash column chromatography (silica gel, 5% ethyl acetate in hexane) to afford the product 2 (1.1 g, 66%) as a colorless oil; 1H NMR (400 MHz, CDCl3) (7.61 (d, J = 8.4 Hz, 2H), 6.98 (d, J = 8.0 Hz, 2H), 3.72-3.64 (m, 2H), 2.96-2.88 (m, 2H), 2.37 (s, 3H), 1.51 (s, 9H), 1.48 (s, 9H); 13C NMR (100 MHz, CDCl3) (162.7, 158.0, 151.8, 138.2, 137.7, 131.1, 91.8, 82.7, 82.1, 50.1, 34.9, 28.2, 28.1, 15.8; HRMS (FAB) calcd for C20H30IN2O4S (M+) 521.0971, found 521.0966.

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

Adding a certain compound to certain chemical reactions, such as: 19393-94-3, name is 2,4-Dibromo-1-iodobenzene, 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 19393-94-3, COA of Formula: C6H3Br2I

Into a 100ml two-necked flask feed 2, 4-dibromo-1-iodobenzene (3.6g), trimethylsilylacetylene (1. 1g), CuI (O.11g), Pd(PPh3)2C12 (0.21g) molar ratio is based on 1:1.1 :0.06:0.03, solvent selection as 50ml anhydrous tetrahydrofuran, anhydrous anaerobic conditions are controlled at 0 C, stir for 30 minutes, distillation under reduced pressure and then obtained 3.16g of ((2,4-dibromophenyl) ethynyl) trimethylsilane, yield is 95%.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2,4-Dibromo-1-iodobenzene, and friends who are interested can also refer to it.

Related Products of 1000577-94-5, A common heterocyclic compound, 1000577-94-5, name is 3-Bromo-4-iodobenzonitrile, molecular formula is C7H3BrIN, 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.

In a nitrogen stream, in a 50 mL Schlenk tube,3.52 g (11.43 mmol) of 3-bromo-4-iodobenzonitrile, 6.35 g (28.58 mmol) of 9-phenanthreneboronic acid,51 mg (0.23 mmol),218 mg (0.46 mmol) of 2-dicyclohexylphosphino-2 ‘, 4′, 6’-triisopropylbiphenyl (Xphos), 15 mL of tetrahydrofuran,And 15 mL of 2 M potassium carbonate aqueous solution were added, and the mixture was stirred at 75 C. for 15 hours. After cooling to room temperature, methanol 100 mL was added and stirred, and the precipitated solid was collected by filtration and washed with pure water and methanol.By recrystallizing (chloroform / methanol) the residue,1.62 g (3.56 mmol) of a colorless powder of 9- [4-cyano-2- (9-phenanthryl) -phenyl] – phenanthrene was isolated (yield 31%, HPLC purity 98.4%).

The synthetic route of 1000577-94-5 has been constantly updated, and we look forward to future research findings.

Reference of 141738-80-9,Some common heterocyclic compound, 141738-80-9, name is 3-Chloro-4-iodobenzotrifluoride, molecular formula is C7H3ClF3I, 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.

General procedure: For a typical reaction, a Vapourtec 2R+ Series was used as the platform with a Vapourtec Gas/Liquid Membrane Reactor to load the carbon monoxide. The HPLC pump were both set at 0.125 mL/min, temperature of the reactor at 110 C, pressure of CO at 15 bar with a back pressure regulator of 250 psi (17.24 bar). The system was left running for 2 h to reach steady state after which time the flow streams were switched to pass from the loops where the substrates and catalysts were loaded. The first loop (5 mL) was filled with a solution of palladium acetate (20 mg, 0.08 mmol), triphenylphosphine (48 mg, 0.168 mmol) in 6 mL of 1,4-dioxane while the second loop (5 mL) was filled with a solution made from the ortho-substituted iodoarene substrate (1.68 mmol), triethylamine (0.272 g, 0.374 mL, 2.69 mmol) and water (0.505 g, 28 mmol) in 5.8 mL of 1,4-dioxane. An Omnifit column filled with 1.71 cm3 (r = 0.33 cm, h = 5.00 cm) of cotton was positioned just before the back pressure regulator to trap any particulate matter formed to avoid blocking of the back pressure regulator. After the substrates were passed through the system, the outlet of the flow stream was directed into a receptacle where the excess carbon monoxide gas was vented off in the fume cupboard. The reaction mixture was then evaporated to dryness, ethyl acetate (25 mL) and sodium carbonate solution (2 M, 10 mL) were added and transferred to a separating funnel. After collecting the aqueous layer, the organic layer was extracted with sodium carbonate solution (2 M, 2 × 10 mL). The combined aqueous layers were acidified by the addition of 2 M HCl solution which was then extracted with ethyl acetate (3 x 25 mL). The organic layer was dried over sodium sulfate, and the solvent evaporated under vacuum to give the crude product as a solid. The crude product was then recrystallised from the appropriate solvent.

The synthetic route of 141738-80-9 has been constantly updated, and we look forward to future research findings.

These common heterocyclic compound, 74128-84-0, name is 2-Bromo-1-iodo-3-methoxybenzene, 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. Quality Control of 2-Bromo-1-iodo-3-methoxybenzene

Under a nitrogen atmosphere, 31.3 g of 2-bromo-1-iodo-3-methoxybenzene,Phenyl dibenzo [b, d] furan-2-amine (26.0 g), A flask containing sodium-tert-butoxide (14.6 g) and toluene (200 ml) was heated to 90 C and bis [(tri-tertiary-butyl) phosphine] palladium (2.0 g) was added thereto. And refluxed under nitrogen for 24 hours.After cooling to room temperature, the mixture was filtered, and the solvent was distilled off under reduced pressure. The resulting solid was washed with acetonitrile to obtain 22.2 g of compound synthesis intermediate E

The synthetic route of 2-Bromo-1-iodo-3-methoxybenzene has been constantly updated, and we look forward to future research findings.

Electric Literature of 1208075-44-8, 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. 1208075-44-8, name is Ethyl 2-bromo-5-iodobenzoate belongs to iodides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

General procedure: To a 20 mL vial with a stir bar was added aryl halide 1 (2.00 mmol), Pd(dba)2 (28.8 mg, 2.5 mol %), Xantphos (28.9 mg, 2.5 mol %). The vial was sealed with a Teflon-lined cap and THF (6.0 mL) was added. The mixture was vacuumed and backfilled with nitrogen (3×). A solution of ethyl 2-bromozincacetate (2a) in THF (0.40 M, 6.0 mL, 1.2 equiv) filtered through a Target Nylon 0.45 mum filter (1.25-inch OD) was syringed in and the reaction mixture was then heated to 65 C and monitored by HPLC. Upon reaction completion based on HPLC analysis (?95% conversion unless the reaction was stalled), the mixture was cooled to room temperature and quenched with 1 M aq HCl (5.0 mL), followed by addition of brine (5.0 mL). The organic layer was separated and concentrated in vacuum. The residue was purified by silica gel column chromatography using gradient EtOAc in hexanes.

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, Ethyl 2-bromo-5-iodobenzoate, other downstream synthetic routes, hurry up and to see.