Iodides-buliding-blocks

Synthetic Route of 76801-93-9, These common heterocyclic compound, 76801-93-9, name is 5-Amino-N1,N3-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide, 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.

5-Amino-1,3-N,N’-bis-(2,3-dihydroxypropyl)-2,4,6-triiodoisophtalamide (40.0 g, 56.7 mmol) was suspended in pyridine (80 ml). With effective stirring and cooling in an ice/water bath, acetic anhydride (70 ml) was added dropwise. After addition the mixture was stirred at ambient temperature over night. The clear solution was evaporated to an oil, which was dissolved in ethyl acetate (450 ml). This solution was washed with diluted hydrochloric acid (0.05 M, 100 ml), water (200 ml), diluted solution of sodium hydrogen carbonate (5 %, 2 × 100 ml) and at last a saturated solution of sodium chloride (70 ml). The organic phase was dried (NaSO4) and the solvent evaporated to a white crystalline substance. Yield 49.5 g (= quantitative). 1H NMR (CDCl3): 6.71 & 6.38 (two t:s, 2H), 5.24 (br. s, 2H), 5.09 (s, 2H), 4.37 – 4.48 & 4.22 – 4.35 (m:s, 4H), 3.71 – 3.85 & 3.50 – 3.65 (m:s, 4H), 2.06 (s, 12H).

Statistics shows that 5-Amino-N1,N3-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide is playing an increasingly important role. we look forward to future research findings about 76801-93-9.

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. 13194-69-9, name is 2-Iodo-5-methylaniline, A new synthetic method of this compound is introduced below., Product Details of 13194-69-9

General procedure: The corresponding pyrazinoic acid (5.0 mmol) was dispersed in dry toluene (20 mL) and mixed with 1.5eq. of thionyl chloride (0.55 mL, 7.5 mmol). The reaction mixture was heated to reflux for approximately 1 h. Next, the excess of thionyl chloride was removed by repeated evaporation with dry toluene under vacuum.The crude acyl chloride was dissolved in dry acetone(20 mL) and added drop-wise to a stirred solution of the corresponding aniline (5.0 mmol) with triethylamine(5.0 mmol) in dry acetone (30 mL). The reaction mixture was stirred at ambient temperature for up to 6 h. The completion of the reaction was monitored by TLC (eluent: hexane/ethyl acetate; r =2 : 1). The crude product adsorbed on silica gel by solvent evaporation was purified by flash chromatography(hexane/ethyl acetate gradient elution).The analytical data of the prepared compounds were fully consistent with the proposed structures and are available in the Supplementary Data.

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 of 626-01-7, A common heterocyclic compound, 626-01-7, name is 3-Iodoaniline, molecular formula is C6H6IN, 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.

General procedure: In a 10-ml round-bottom flask equipped with a condenser, a mixture of the aromatic amine (2 mmol), ethyl acetoacetate (1 mmol), and [Pyridinium-SO3H]HSO4 (0.0,385 g, 15 mol %) was stirred at 100 C for 10 min. Afterwards, the aromatic aldehyde (2 mmol) was added, and the resulting mixture was kept under stirring for the specified time in Table 3, the progress of the reaction was followed by TLC. After completion of the reaction, the reaction mixture was cooled to room temperature, extracted by the warm EtOAc (10 ml) to separate the catalyst. EtOAc was removed and the crude product was recrystallized from aqueous ethanol (96 %) to afford the pure product, which required no further purification. The recovered catalyst was washed with EtOAc (2 x 10 ml), dried, and reused, without considerable catalytic activity decrease.

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.

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. 4387-36-4, name is 2-Iodobenzonitrile, A new synthetic method of this compound is introduced below., name: 2-Iodobenzonitrile

S1:100 mmol of the compound of the above formula (1), 150 mmol of the compound of the above formula (2), 0.8 mmol of palladium acetate, 100 mmol of tetra-n-butylammonium bromide were added to an appropriate amount of the organic solvent N,N-dimethylacetamide (DMA) at room temperature. And 225 mmol of sodium carbonate, and then the temperature was raised to 95 ° C with stirring, and the reaction was stirred at this temperature for 25 hours;After the reaction was completed, the reaction mixture was poured into a sufficient amount of ethyl acetate, and then washed with saturated brine, and the organic layer and aqueous layer were separated, and the aqueous layer was extracted with ethyl acetate. The organic layer and the organic layer obtained by ethyl acetate extraction were dried over anhydrous Na 2 SO 4 and evaporated under reduced pressure. The elution is carried out, the eluent is collected and the eluent is removed by evaporation.The compound of the above formula (3) is thus a white solid, the yield is 87.6percent;

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.

Electric Literature of 16932-44-8, 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. 16932-44-8, name is 2-Iodo-1,3-dimethoxybenzene, This compound has unique chemical properties. The synthetic route is as follows.

A mixture of 2,6-dimethoxyiodobenzene (40.1 mg, 151 mumol), Bu3SnH (48.7 muL, 181 mumol), and V-65 (7.5 mg, 30.2 mumol) in THF-d8 (4 mL) was stirred at reflux for 3 h. Bu3SnH (48.7 muL, 181 mumol) and V-65 (7.5 mg, 30.2 mumol) were added, and the mixture was stirred at reflux for 2 h. The mixture was concentrated in vacuo, and the residue was purified by column chromatography on silica gel (pentane/Et2O=40:1) to give 2-deutero-1,3-dimethoxybenzene (21.1 mg, 100%). 1H NMR (400 MHz): 3.72 (s, 6H, O-CH3), 6.46-6.51 (m, 2.15H, 2-H, 4-H, 6-H), 7.17 (t, J=8.1 Hz, 1H, 5-H); 2H NMR: 6.50 (br); MS(EI+): m/z 139 [M]+; HRMS (EI+): calcd for C8H92HO2 [M]+: 139.07436, found: 139.07515.

The chemical industry reduces the impact on the environment during synthesis 2-Iodo-1,3-dimethoxybenzene. I believe this compound will play a more active role in future production and life.

Electric Literature of 10297-05-9,Some common heterocyclic compound, 10297-05-9, name is 1-Chloro-4-iodobutane, molecular formula is C4H8ClI, 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.

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.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1-Chloro-4-iodobutane, its application will become more common.

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. 620-05-3, name is (Iodomethyl)benzene, A new synthetic method of this compound is introduced below., Recommanded Product: (Iodomethyl)benzene

General procedure: In a flame-dried round-bottom flask, beta-amidoester (9) (1 mmol; 1 equiv) was taken in DMF (5 mL) at room temperature. To this reaction mixture KOt-Bu (1.2 mmol; 1.2 equiv) was added. After 5 minutes of stirring at same temperature alkyl halide (1.05 mmol; 1.05 equiv) was added and stirring was continued for 15 minutes. Upon completion of the alkylation (judged by TLC), it was diluted with 10 mL of EtOAc and quenched with water. The organic extracts were dried over anhydrous sodium sulphate and concentrated under vacuum. The crude product was purified by flash chromatography (hexane and EtOAc as eluents) to afford compounds 10.

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.

Adding a certain compound to certain chemical reactions, such as: 3268-21-1, name is 1,4-Diiodo-2,3,5,6-tetramethylbenzene, 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 3268-21-1, Safety of 1,4-Diiodo-2,3,5,6-tetramethylbenzene

To a solution of 1 (3.02 g, 7.82 mmol, 1 equiv), Pd(PPh3)2Cl2 (0.380 g, 0.541 mmol, 0.07 equiv) and CuI (0.101 g, 0.530 mmol, 0.07 equiv) in Et2NH was added ethynyltrimethylsilane (2.45 mL, 17.3 mmol, 2.2 equiv) and the reaction was stirred at RT overnight. The solvent was evaporated followed by extraction with CH2Cl2 (3 >< 100 mL) and washing of the organic layer with H20 (2 >< 200 mL) and brine (250 mL). The combined organic layers were dried over MgSO4 and concentrated in vacuo. The product was (0279) purified via column chromatography (PE) leading to 2 as off-white crystals (82%). 1H NMR (400 MHZ, CDClg) 6 2.38 (s, 12H), 0.27 (s, 18H). 13C NMR (400 MHZ, CDC13)8 136.0, 123.4, 104.2, 103.2, 18.5, 0.27. IRV 2957, 2138, 1270, 1073, 863 cm-1. HRMS (EI+) m/z caIcuIated for C20H30Si2 326.1886, found 326.1870. 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.

Adding a certain compound to certain chemical reactions, such as: 2043-57-4, name is 1,1,1,2,2,3,3,4,4,5,5,6,6-Tridecafluoro-8-iodooctane, 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 2043-57-4, Quality Control of 1,1,1,2,2,3,3,4,4,5,5,6,6-Tridecafluoro-8-iodooctane

1-Methylimidazole (4.32 g, 0.52 mol) was partially dissolved in reagent-grade toluene (50 ml) in a large round-bottomed flask and stirred vigorously. 1, 1, 1,2,2,3,3,4,4,5,5, 6, 6-Tridecafluoro-8-iodooctane (26 g, 0.053 mol) was added, and the mixture was heated under reflux at 110 degrees C for 24 hours. The solvent was removed under vacuum giving l-methyl-3- (3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 8 -tridecafluorooctyl) imidazolium iodide (30.5 g) as a waxy solid. Potassium 1,1,2,2- tetrafluoroethanesulfonate (TFES-K, 12 g) was added to reagent grade acetone (100 ml) in a separate round-bottomed flask, and this solution was carefully added to the 1- methyl-3- (3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8,8,8- tridecafluorooctyl) imidazolium iodide which had been dissolved in acetone (50 ml) . The reaction mixture was heated under reflux for approximately 16 hours. The reaction mixture was then filtered using a large frit glass funnel to remove the white KI precipitate formed, and the filtrate was placed on a rotary evaporator for 4 hours to remove the acetone. The oily liquid was then filtered a second time to yield the product, as shown by proton NMR.

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 1,1,1,2,2,3,3,4,4,5,5,6,6-Tridecafluoro-8-iodooctane, and friends who are interested can also refer to it.

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. 27913-58-2, name is 4-(4-Iodophenyl)butanoic acid, This compound has unique chemical properties. The synthetic route is as follows., Application In Synthesis of 4-(4-Iodophenyl)butanoic acid

A solution of BORANE-TETRAHYDROFURAN (200M .) was added dropwise to a stirred solution of 4- (4-IODOPHENYL) butanoic acid (25g) at 0C under nitrogen. After 2h methanol (200MI) was added dropwise. And then the solvent was removed in vacuo. The residue was partitioned between ether and water and the organic phase was separated. The combined organic layers were dried (NA2SO4) and evaporated to give the title compound (23 g). LCMS RT = 3.34 min.

According to the analysis of related databases, 27913-58-2, the application of this compound in the production field has become more and more popular.