Category: 14922-91-9

Reference of 14922-91-9, A common heterocyclic compound, 14922-91-9, name is 5-Bromo-2-ethylaniline, molecular formula is C8H10BrN, 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.

Step 2: Preparation of 4-bromo-1-ethyl-2-iodobenzeneTo a stirred mixture of 5-bromo-2-ethylaniline (3.39 g, 200 mmol) in distilled water (110 ml) is added concentrated sulfuric acid (5.60 ml), followed by brief heating at reflux until dissolution. The mixture is allowed to cool to room temperature, producing a fine precipitate, then further cooled to approximately 0 C. in an ice/salt bath. To this slurry is added an aqueous solution of sodium nitrite (1.17 g, 16.94 mmol) in distilled water (10 ml) dropwise over 15 minutes, maintaining a temperature below 5 C., followed by additional stirring for 30 minutes. The reaction mixture is next filtered then added to a second solution of aqueous potassium iodide (8.44 g, 50.83 mmol) in distilled water (45 ml) dropwise at room temperature. After the addition is complete the solution is briefly heated to 80 C. then allowed to cool to room temperature again. The reaction mixture is extracted with ethyl acetate (3×50 ml), and the organic phase is washed with 1M aqueous hydrochloric acid (30 ml) and aqueous sodium thiosulfate (2×30 ml). After drying over anhydrous magnesium sulfate and concentration in vacuo 4-bromo-1-ethyl-2-iodobenzene (4.90 g) is furnished as an orange liquid.

The synthetic route of 14922-91-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; SYNGENTA CROP PROTECTION LLC; US2012/190545; (2012); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Synthetic Route of 14922-91-9, The chemical industry reduces the impact on the environment during synthesis 14922-91-9, name is 5-Bromo-2-ethylaniline, I believe this compound will play a more active role in future production and life.

To a stirred mixture of 5-bromo-2-ethylaniline (3.39 g, 200 mmol) in distilled water (1 10 ml) is added concentrated sulfuric acid (5.60 ml), followed by brief heating at reflux until dissolution. The mixture is allowed to cool to room temperature, producing a fine precipitate, then further cooled to approximately 0 0C in an ice/salt bath. To this slurry is added an aqueous solution of sodium nitrite (1.17 g, 16.94 mmol) in distilled water (10 ml) dropwise over 15 minutes, maintaining a temperature below 5 0C, followed by additional stirring for 30 minutes. The reaction mixture is next filtered then added to a second solution of aqueous potassium iodide (8.44 g, 50.83 mmol) in distilled water (45 ml) dropwise at room temperature. After the addition is complete the solution is briefly heated to 80 0C then allowed to cool to room temperature again. The reaction mixture is extracted with ethyl acetate (3 x 50 ml), and the organic phase is washed with 1 M aqueous hydrochloric acid (30 ml) and aqueous sodium thiosulfate (2 x 30 ml). After drying over anhydrous magnesium sulfate and concentration in vacuo 4-bromo-1-ethyl-2-iodobenzene (4.90 g) is furnished as an orange liquid.

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, 5-Bromo-2-ethylaniline, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; SYNGENTA PARTICIPATIONS AG; SYNGENTA LIMITED; WO2009/150093; (2009); A1;,
Bromide – Wikipedia,
bromide – Wiktionary

Adding a certain compound to certain chemical reactions, such as: 14922-91-9, name is 5-Bromo-2-ethylaniline, belongs to bromides-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 14922-91-9, Recommanded Product: 14922-91-9

Step 44-Chlorophenylboronic acid (13.2 g, 0.08 mol) and tetrakis(triphenylphosphine) palladium (0) (2.4 g, 0.002 mol) are added to a solution of 5-bromo-2-ethylaniline (14.1 g, 0.07 mol) in 1 ,2- dimethoxyethane (140 ml). After stirring the reaction mixture for 15 minutes at 20C, a solution of 20% aqueous sodium carbonate (300ml) is added to the mixture, and the resulting mixture is refluxed for 24 hours. The reaction mixture is cooled to room temperature, diluted with water and extracted using ethyl acetate. The combined organic extracts are dried over anhydrous sodium sulfate, filtered and the filtrate evaporated in vacuo. The residue is further purified by column chromatography on silica gel, eluting with 5% ethyl acetate in hexane to give 5-(4-chlorophenyl)- 2-ethylaniline (14.3 g).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, 5-Bromo-2-ethylaniline, and friends who are interested can also refer to it.

Reference:
Patent; SYNGENTA PARTICIPATIONS AG; WO2008/110308; (2008); A2;,
Bromide – Wikipedia,
bromide – Wiktionary

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. 14922-91-9, name is 5-Bromo-2-ethylaniline, A new synthetic method of this compound is introduced below., category: bromides-buliding-blocks

Step 2: Preparation of 4-bromo-1-ethyl-2-iodobenzeneTo a stirred mixture of 5-bromo-2-ethylaniline (3.39 g, 200 mmol) in distilled water (110 ml) is added concentrated sulfuric acid (5.60 ml), followed by brief heating at reflux until dissolution. The mixture is allowed to cool to room temperature, producing a fine precipitate, then further cooled to approximately 0 0C in an ice/salt bath. To this slurry is added an aqueous solution of sodium nitrite (1.17 g, 16.94 mmol) in distilled water (10 ml) dropwise over 15 minutes, maintaining a temperature below 5 0C, followed by additional stirring for 30 minutes. The reaction mixture is next filtered then added to a second solution of aqueous potassium iodide (8.44 g, 50.83 mmol) in distilled water (45 ml) dropwise at room temperature. After the addition is complete the solution is briefly heated to 80 0C then allowed to cool to room temperature again. The reaction mixture is extracted with ethyl acetate (3 x 50 ml), and the organic phase is washed with 1 M aqueous hydrochloric acid (30 ml) and aqueous sodium thiosulfate (2 x 30 ml). After drying over anhydrous magnesium sulfate and concentration in vacuo 4-bromo-1-ethyl-2- iodobenzene (4.90 g) is furnished as an orange liquid.

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; SYNGENTA LIMITED; MATHEWS, Christopher, John; SCUTT, James, Nicholas; WO2011/6543; (2011); A1;,
Bromide – Wikipedia,
bromide – Wiktionary