Tag: M.W=200-300

Adding a certain compound to certain chemical reactions, such as: 19099-54-8, name is 1-Iodo-2-isopropylbenzene, 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 19099-54-8, Recommanded Product: 1-Iodo-2-isopropylbenzene

0.3 mmol of sodium carbonate and 0.1 mmol of 1,2-bis(4-methoxyphenyl)acetylene,Tetrakis(triphenylphosphine palladium) 0.005 mmol, bis(2-diphenylphosphinophenyl)ether 0.005 mmol,Benzo[d][1,3]dioxol-5-ylboronic acid 0.2 mmol,0.3 mmol of 2-isopropyliodobenzene and 1 mL of N,N-dimethylformamide were added to a 15 mL reaction tube.Nitrogen was repeatedly filled 10 times, placed in an oil bath at 120 C, and reacted for 24 hours;Cooled to room temperature, the reaction was diluted with ethyl acetate, washed with water three times, the organic phase dried over anhydrous Na2SO4, filtered, and concentratedPurification by thin layer chromatography gave 26.3 mg of the desired product, yield 55%.

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Electric Literature of 2265-91-0,Some common heterocyclic compound, 2265-91-0, name is 1,3-Difluoro-5-iodobenzene, molecular formula is C6H3F2I, 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: A general procedure for the synthesis of diarylacetylenes 2 involved the addition of 2.0 mmol of arylacetylene to a mixture of 2.1 mmol of an aryliodide, 3.0 mmol of diisoproprylethylamine, 0.02 mmol of Pd(PPh3)4,and 0.02 mmol of CuI in water (7 mL). The mixture was stirred for 1-2 h at 75C. After cooling, the product was collected by filtration or extracted using dichloromethane and purified by recrystallization and/or chromatography.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 1,3-Difluoro-5-iodobenzene, its application will become more common.

Reference of 335349-57-0, 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. 335349-57-0, name is 5-Chloro-4-iodo-2-nitroaniline, This compound has unique chemical properties. The synthetic route is as follows.

To a suspension of 5-chloro-4-iodo-2-nitroaniline (Intermediate 1, 36.5 g, 122 mmol) in EtOH (800 mL) and water (150 mL) was added iron powder (38 g, 673mmol) and NEta4CI (16 g, 306 mmol). The mixture was heated under nitrogen at 5O0C overnight. Additional iron powder (38 g, 673 mmol) and NH4Cl (16 g, 306 mmol) were added and heating was continued for 45 h. The reaction mixture was cooled, filtered and concentrated. The residue was re-dissolved in ethyl acetate and washed with sodium bicarbonate solution. The organic phase was concentrated to afford the desired product as a gray solid, which was used in the next step without further purification.

The chemical industry reduces the impact on the environment during synthesis 5-Chloro-4-iodo-2-nitroaniline. I believe this compound will play a more active role in future production and life.

Related Products of 77317-55-6, A common heterocyclic compound, 77317-55-6, name is Methyl 2-amino-5-iodobenzoate, molecular formula is C8H8INO2, 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.

REFERENCE EXAMPLE 108 2-Amino-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-2-yl)benzoic acid methyl ester To a solution of methyl 5-iodoanthranilate (2.87 g, 10.0 mmol) and triethylamine (4.2 mL, 30 mmol) in 1,4-dioxane (20 mL), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) dichloromethane complex (82 mg, 0.10 mmol) was added and 4,4,5,5-tetramethyl-1,3,2-dioxaborolane (3.7 mL, 25 mmol) was added dropwise. The resultant mixture was stirred at 80 C for 14 hours under nitrogen atmosphere. The reaction mixture was combined with water, and extracted twice with ethyl acetate. The combined organic layer was washed with water and brine, filtered through a silica gel (eluding with ethyl acetate), and concentrated under reduced pressure. The residue was subjected to a column chromatography on a silica gel (hexane/ethyl acetate, 5:1), and recrystallized from ethyl acetate-hexane to obtain the title compound (1.45 g, yield: 52%). Melting point: 110-112 C 1H NMR (CDCl3) delta 1.33 (12H, s), 3.86 (3H, s), 5.96 (2H, br s), 6.63 (1H, d, J = 8.3 Hz), 7.67 (1H, dd, J = 8.3, 1.5 Hz), 8.33 (1H, d, J = 1.5 Hz).

The synthetic route of 77317-55-6 has been constantly updated, and we look forward to future research findings.

Adding a certain compound to certain chemical reactions, such as: 54435-09-5, name is 2-Iodo-4-methoxybenzoic acid, 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 54435-09-5, Application In Synthesis of 2-Iodo-4-methoxybenzoic acid

(c) K2 CO3 (13.94 g, 0.101 mol) was dissolved in water (67 ml) and then 2-iodo-4-methoxybenzoic acid (25.3 g, 0. 091 mol) was added, followed by 5-amino-1-ethylpyrazole (11.2 g, 0.101 mol) and finally copper (2.7 g). The reaction mixture was refluxed for 20 hours, cooled to room temperature and then water (350 ml) was added and the mixture was refluxed for 0.75 hours. The reaction mixture was cooled, and the product was collected by filtration, recrystallized from ethanol, and dried in an oven at 40 C. to afford 13.37 g (56%) of N-(1-ethylpyrazol-5-yl) -4-methoxyanthranilic acid, m.p. 130-135 C.

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, 2-Iodo-4-methoxybenzoic acid, other downstream synthetic routes, hurry up and to see.

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., Product Details of 4387-36-4

Weigh 0.02 mM halogenated aromatic hydrocarbon in a reaction flask, add 1 mL of solvent, and fill the reaction flask with nitrogen.Deoxygenation was performed for 10 minutes and 15 yL of triethylamine was added during the deoxygenation.After that, the reaction vessel was sealed, placed over a light-emitting diode (LED) with a wavelength of 400 nm and a power of 0.5 W, and the reaction was stirred at room temperature for 12 hours.After that, the dehalogenation reaction yield was characterized by gas chromatography-mass spectrometry.The yield of o-phenylacetonitrile was 80.7percent, and the characterization results of the gas chromatography and mass spectrometry were shown in Figure 2. The halogenated aromatic hydrocarbon waso-Iodobenzeneacetonitrile, the solvent is tetrahydrofuran.

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 26670-89-3,Some common heterocyclic compound, 26670-89-3, name is 2-Bromo-4-iodo-1-methylbenzene, molecular formula is C7H6BrI, 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 1 L four-necked round bottom flask equipped with a stirrer, Erlin condenser, nitrogen inlet tube, and thermometer, 19.3 g (91.0 mmol) of 4-dibenzofuran boronic acid of Synthesis Example 8, 2 (100.0 mmol) of bromo-4-iodotoluene, 300 mL of toluene, 150 mL of ethanol, 25.1 g (181.5 mmol) of potassium carbonate and 90 mL of water, and the mixture was stirred at room temperature for 30 minutes under a nitrogen stream. Subsequently, 0.10 g (0.45 mmol) of palladium acetate and 0.27 g (0.91 mmol) of tri (o-tolyl) phosphine were added and heated, followed by stirring at a reflux temperature for 2 hours. The resulting reaction solution was cooled to room temperature, the aqueous layer was separated, and extracted twice with 100 mL of ethyl acetate. Next, the organic layers were combined, washed with 100 mL of saturated brine, dried over magnesium sulfate, magnesium sulfate was removed by suction filtration, and the solvent was distilled off under reduced pressure. Subsequently, the obtained oily matter was separated by silica gel column chromatography with a mixed solvent of n-heptane and toluene to obtain 23.3 g (yield: 75.9%) of the desired bromide.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-Bromo-4-iodo-1-methylbenzene, 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. 6940-76-7, name is 1-Chloro-3-iodopropane, A new synthetic method of this compound is introduced below., Product Details of 6940-76-7

A solution of LDA in THF/heptane/ethylbenzene (2.0 M, 137 mL, 274 mmol) was added slowly over 90 min to a stirring solution of N,N’-diisopropyl-2,3-butanediimine (20.0 g, 119 mmol) in distilled THF (180 mL) under N2, maintained at -78 C and stirred for an additional 5 h. A solution of 1-chloro-3-iodopropane (57.4 g, 280 mmol) in distilled THF (20 mL) was added over 15 min and the mixture was stirred at -78 C under N2. After 15 h, aqueous HCl (1M, 600 mL) was added and the mixture was allowed to stir at room temperature (RT) for 5 h. THF was removed under reduced pressure, and CH2Cl2 (160mL x 3) was used to extract the product from the remaining aqueous layer. The organic layers were combined and washed with HCl (1M, 60mL), H2O (120 mL) and sat. NaHCO3 (120mL), and the organic layer was then dried over MgSO4. The mixture was filtered and the filtrate was concentrated under reduced pressure to yield a crude orange oil. The oil was purified by distillation (133-137 C/0.08 mmHg) to give 6 (22.5 g, 94.1 mmol, 79%) as a yellow oil. 1H NMR (500 MHz,CDCl3): 3.55 (t, J = 6.3, 4H), 2.79 (t, J = 7.1, 4H), 1.85-1.70 (m, 8H). 13C NMR (125MHz, CDCl3): 198.9, 44.4, 35.1, 31.7, 20.2. ESI-MS: m/z 241 ([M + H]+, calcd for C10H1735Cl37ClO2 , 241.17554).

The synthetic route of 6940-76-7 has been constantly updated, and we look forward to future research findings.

Synthetic Route of 2401-21-0, 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. 2401-21-0, name is 1,2-Dichloro-3-iodobenzene belongs to iodides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

I. 17alpha-Chloro-17beta-Methylsulfinyl-11beta-Hydroxy-1,4-Androstadiene-3-One In a manner similar to that described in Example 2A, react 0.475 gm. 17alpha-methylthio-11beta-hydroxy-1,4-androstadiene-3-one, 12 ml. of pyridine, 3 ml. of water and 1.17 gm. of iodobenzene dichloride. Purify the residue by utilizing thin layer silica gel chromatography, developing with acetone/ethyl acetate/chloroform (6:47:47), and eluding with ethyl acetate. Crystallize from acetone/hexane to obtain the title compound; m.p. 230°-233° C. (decomp.); nmr (dmso-d6) delta 1.40 (C10 and C13 –CH3, s), 2.47 (SCH3, s), 4.28 (11alpha-H, mult.), 5.94 (C4 –H, d), 6.16 (C2 –H, dd), 7.29 (C1 –H, d).

The synthetic route of 1,2-Dichloro-3-iodobenzene 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. 645-00-1, name is 1-Iodo-3-nitrobenzene, A new synthetic method of this compound is introduced below., Quality Control of 1-Iodo-3-nitrobenzene

General procedure: SAC (300mg) and NaBH4 (4.0mmol) were added to a solution of nitroarenes (1.0mmol) in EtOH/water (1/1) (20ml). The reaction mixture was stirred for 4h at the temperature indicated in Table3. At the end of the reaction, the catalyst was removed by filtering and the filtrate was extracted with 3×70ml EtOAc. The combined organic layers were dried over MgSO4 and concentrated in a vacuum.

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.