Category: iodides-buliding-blocks

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 766-99-4 as follows. HPLC of Formula: C8H5I

To a solution of l-ethynyl-4-iodobenzene 6 (0.908 g, 3.98 mmol) in THF (20 mL) at -78 0C was added ethylmagnesium bromide (3M in ether, 1.39 mL, 4.18 mmol). After 10 minutes the cooling bath was removed and the solution was allowed to stir at room temperature for 1 hour. The reaction mixture was then re- cooled to 0 0C and added to a solution of N-(tert-butoxycarbonyl)-L-proline N’- methoxy-N’-methylamide 2 (0.970 g, 3.76 mmol) in THF (10 mL). The reaction mixture was warmed to room temperature and stirring was continued for 12 hours before the mixture was quenched with saturated NH4Cl. The mixture was diluted with ethyl acetate/H2O, the layers separated and the aqueous phase was re-extracted with ethyl acetate (2x). The combined organic layers were washed (H2O, brine), dried (Na2SO4), and filtered, and the solvent was removed in vacuo. The resulting residue was purified by flash chromatography (hexane: ethyl acetate, 4: 1) to give (S)- tert-butyl 2-(3-(4-iodophenyl)propioloyl)pyrrolidine-l-carboxylate 7 (0.908 g, 71%) as a yellow oil which solidified on standing. 1H NMR (400 MHz, CDCl3) delta 7.72 – 7.76 (m, 2H), 7.26 -7.30 (m, 2H), 4.49 (dd, J=S. S, 4.3 Hz, 0.3H), 4.29 (dd, J=8.5, 5.5 Hz, 0.7 H), 3.59 (app t, J=6.7 Hz, 2H), 2.20 – 2.33 (m, IH), 1.85 – 2.10 (m, 3H), 1.45, 1.40 (s, 9H, rotamers in 2:3 ratio). LCMS: Anal. Calcd. for Ci8H20INO3: 425; found: 326 (M+H-Boc)+.

According to the analysis of related databases, 766-99-4, the application of this compound in the production field has become more and more popular.

Electric Literature of 5876-51-7,Some common heterocyclic compound, 5876-51-7, name is 5-Iodobenzo[d][1,3]dioxole, molecular formula is C7H5IO2, 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.

[00200] To 21.9 mg NiCl2(dppf) in a reaction tube under nitrogen were added 4 ml dioxane, 0.42 ml (3 mmol) triethylamine, 0.22 ml (1.5 mmol) pinacolborane and 238 mg (0.96 mmol) 1-iodo-3,4-methylenedioxybenzene. The green coloured reaction solution was warmed to 80 C. with stirring for 6 h in an oil bath. An aliquot (ca. 0.3 ml) of the reaction solution was removed, extracted into diethyl ether and washed several times with water and analysed by gc (fid detector, SGE HTS capillary column). Besides a little 1,3-benzodioxole, the only other product peak in the gc was that due to the desired arylboronic acid pinacol ester. NiCl2 (dppf) was also shown to catalyse the formation of the desired product in acetonitrile.

The synthetic route of 5876-51-7 has been constantly updated, and we look forward to future research findings.

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. 620-05-3, name is (Iodomethyl)benzene, This compound has unique chemical properties. The synthetic route is as follows., Recommanded Product: 620-05-3

General procedure: A mixture of benzyl bromide (171 mg, 1 mmol), diphenyl disulfide (131 mg, 0.6 mmol), PPh3 (184 mg, 0.7 mmol), and [pmIm]Br21 (94 mg, 0.4 mmol) was stirred at 75 C for 1.5 h (TLC). The reaction mixture was extracted with Et2O, and the organic layer was washed with brine (2 × 5 mL) and dried (Na2SO4). Evaporation of solvent left the crude product which was purified by column chromatography over silica gel (hexane) to afford the pure product, benzyl phenyl sulfide (168 mg, 84%) as a colorless liquid; IR (neat) 3058, 3028, 2923, 1581, 1495, 1479, 1452, 1438, 1238, 1090, 1068, 1024 cm-1; 1H NMR (300 MHz, CDCl3) delta 4.21 (s, 2H), 7.32-7.41 (m, 10H); 13C NMR (75 MHz, CDCl3) delta 39.5, 127.6, 128.0, 129.0 (2C), 129.3 (2C), 129.5 (2C), 130.3 (2C), 136.9, 137.9. The spectroscopic (FT-IR, 1H NMR and 13C NMR) data are in good agreement with the reported values.9b The remaining ionic liquid was washed with ether, dried under vacuum, and reused five times without appreciable loss of catalytic activity.

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 620-05-3.

Adding a certain compound to certain chemical reactions, such as: 696-41-3, name is 3-Iodobenzaldehyde, 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 696-41-3, SDS of cas: 696-41-3

General procedure: Benzaldehyde (1.0 mmol), TMTD (1.1 mmol), CuI (10 mol%), and DTBP (4.0 equiv) were added to a dried sealed tube equipped with a septum and magnetic stirrer bar, EtOAc (2 mL) was then added. (Caution. The sealed tube is a pressure-proof tube with a septum.) The mixture was stirred at 120 C and checked by thin-layer chromatography (TLC) until the starting material was consumed (ca. 7-8 h). The reaction was cooled to r.t., quenched with sat. NH4Cl solution (5 mL), and then extracted with EtOAc (3 × 10 mL). The crude solution was dried over anhydrous Na2SO4 and evaporated under vacuum. The residue was purified by flash column chromatography to afford the desired product.

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: 19821-80-8, name is 1,3-Dibromo-2-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 19821-80-8, Safety of 1,3-Dibromo-2-iodobenzene

Example 2: 2,2′,6,6′-Tetrabromo-l,l’-biphenyI (III); At -75 C butyllithium (14 mmol) in hexanes (5.6 mL) was added to a solution ofl,3-dibromo-2-iodobenzene (4.3 g, 12 mmol) in diethyl ether (0.18 L). After the solutionwas stirred for 2 h at -75 C, copper(II)chloride (9.7 g, 72 mmol) was added, and thereaction mixture was allowed to attain 25 C over a 12 h period. Cold water was added tothe reaction mixture and the organic layer was separated. The aqueous phase was extractedwith ethyl acetate (2×0.10 L). The combined organic layers were dried over sodium sulfatebefore being evaporated. 2,2′,6,6′-tetrabromo-l,l’-biphenyl precipitates upon treatment ofthe residue with hexanes cooled to -20 C. The product (9.0 g, 33%) is pure enough forfurther reaction;m.p. 214-215 C;.H NMR (CDC13, 400 MHz): 8 = 7.67 (d, J- 8.3 Hz, 4 H), 7.17 (t, J- 8.0 Hz, 2 H).

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.

Related Products of 2043-57-4, 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. 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, it is a common compound, a new synthetic route is introduced below.

The starting 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl iodide (12.69 g, 26.8 mmol) was dissolved in the mixture of pentane and diethyl ether (90 and 60 mL). The solution was stirred and cooled to -78 C before the solution of 1.6 M tert-butyllithium in hexane (18.54 mL, 29.7 mmol) was added. The mixture was stirred for 15 min and freshly distilled (2-chloroethyl)trichlorosilane (1.5 g, 7.58 mmol) slowly added with stirring. The reaction mixture was stirred for 2 h at -78 C and 1 h at 0 C then it was poured on ice (ca 10 g) and stirred for further 15 min. The resulting biphasic mixture was filtered through silica gel. The layers were separated and aqueous phase was extracted with diethyl ether (3×50 mL). The combined organic phases were dried (MgSO4) and evaporated to afford the product as a yellow oil. The yield was 8.1 g (7.15 mmol, 94%). 1H NMR: delta (ppm) 1.00 (m, 6H, CH2CH2CF2); 1.40 (t, 3JHH=7.7Hz, 2H, CH2CH2Cl); 2.11 (m, 6H, CH2CF2); 3.72 (t, 3JHH=7.7Hz, 2H, CH2Cl). 13C{1H} NMR: delta (ppm) 1.65 (s, CH2CH2CF2); 16.88 (s, CH2CH2Cl); 25.46 (t, 2JCF=24.0Hz, CH2CF2); 40.68 (s, CH2Cl); 106-122 (m, CF3, CF2). 19F NMR: delta (ppm) -127.05 (m, 2F, CF2); -124.09 (bs, 2F, CF2); -123.69 (bs, 2F, CF2); -122.70 (bs, 2F, CF2); -116.94 (m, 2F, CF2); -81.78 (t, 3JFF=11.1Hz, 3F, CF3). 29Si{1H} NMR: delta (ppm) 6.36 (s, 1Si).

The synthetic route of 1,1,1,2,2,3,3,4,4,5,5,6,6-Tridecafluoro-8-iodooctane has been constantly updated, and we look forward to future research findings.

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. 31599-61-8, name is 4-Iodo-1,2-dimethylbenzene, A new synthetic method of this compound is introduced below., HPLC of Formula: C8H9I

General procedure: PdCl2(PPh3)2 (0.1 mmol), P(o-tolyl)3 (0.1 mmol), TFben(0.5 mmol) and indole (1.0 mmol) were transferred into an ovendriedtube (15 mL), which was evacuated and backfilled withN2(5x). DMSO (2 mL), aryl iodide (1.2 mmol), Et3N (1 mmol) andHCO2H (1.5 mmol) were added into the tube via syringe. The reactionmixture was stirred at 70 C for 24 h. After the reaction wascomplete, the mixture was filtrated and extracted with DCM. Thecombined organic layers were washed with H2O and brine, driedover anhydrous Na2SO4, and then concentrated under vacuum.The crude product was purified by column chromatography on silicagel (petroleum ether/ethyl acetate = 20/1) to afford the product.

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.

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. 628-21-7, name is 1,4-Diiodobutane belongs to iodides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. name: 1,4-Diiodobutane

1) Weigh 7.1g of pyrrolidine and 14g of potassium carbonate dissolved in acetone 1000mL, added to the three bottles, the temperature adjusted to 15 C after the slow drop1,4-diiodobutane, 13.4 mL,The whole drop reaction temperature was maintained at 15 C to 20 C,After the completion of heating to 35 C , continue to respond 24h,After the reaction is completed, the reaction solution is directly filtered,The organic solvent was distilled under reduced pressure to give 24.5 g1- (4-iodobutane) pyrrole,The yield (in terms of pyrrolidine) was 97%.

The synthetic route of 628-21-7 has been constantly updated, and we look forward to future research findings.

Electric Literature of 98-61-3, 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. 98-61-3 name is 4-Iodobenzenesulfonyl chloride, 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.

General procedure: To a 25-mL oven-dried Schlenk tube, arenesulfonyl chloride (1.5-2 mmol), furan derivative (1 mmol), Li2CO3 (0.222 g, 3 mmol), 1,4-dioxane (2 mL) and PdCl2(MeCN)2 (12.9 mg, 0.05 mmol) were added successively. The mixture was evacuated by vacuum-argon cycles (5 ×) and stirred at 140 C (oil bath temperature) for 20-72 h (see tables and schemes). After cooling the reaction at r.t. and concentration, the crude mixture was purified by column chromatography (silica gel) to afford the C5-arylated furans.

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

Application of 77317-55-6, 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. 77317-55-6, name is Methyl 2-amino-5-iodobenzoate, This compound has unique chemical properties. The synthetic route is as follows.

b) (2-Amino-5-iodo-phenyl)-methanol; Intermediate 17a (14.00 g) was dissolved in dry THF (50 ml_) and 1M diisobutylaluminium hydride in THF (165 ml_) was added dropwise to this solution at -30C. The solution was then stirred at -150C for 1 h. To this mixture MeOH (50 mL) was added portionwise maintaining the temperature of the solution below -5C. The resulting mixture was then at -15C for 18 h. The formed solid was filtered off and washed with MeOH. The organic phase was dried and the solvent was evaporated in vacuo. The residue was purified by flash chromatography (silica gel, 1-5% methanol in dichloromethane) to give the title compound (9.70 g); ESMS m/z 249.9 [M+H]+.

The chemical industry reduces the impact on the environment during synthesis Methyl 2-amino-5-iodobenzoate. I believe this compound will play a more active role in future production and life.