Pyrimidines

Reference of 205448-66-4, 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. 205448-66-4, name is Methyl 4-chloro-7-methoxyquinoline-6-carboxylate, This compound has unique chemical properties. The synthetic route is as follows.

4.1) In a 500 mL three-necked flask in which ammonia (200 mL, 5.2 mol) is placed, the compound IV (10 g, 39.8 mmol) obtained in the step 3.3) is added to obtain a mixture H;4.2) The mixture H obtained in step 4.1) was placed at 60 C, after 4 h reaction, cooled to room temperature to obtain a mixture I;4.3) Adding dichloromethane to the mixture I and extracting three times to obtain a pale yellow compound V (yield 85.17%)

The chemical industry reduces the impact on the environment during synthesis Methyl 4-chloro-7-methoxyquinoline-6-carboxylate. I believe this compound will play a more active role in future production and life.

Application of 142569-70-8, 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. 142569-70-8, name is (S)-1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propan-1-ol belongs to quinolines-derivatives compound, it is a common compound, a new synthetic route is introduced below.

Stage 2.A 250 mL three-necked flask fitted with a stirrer, thermometer and dropping funnel is flushed with nitrogen. 45 g (0.0983 mol) of 2-(2-(3(S)-(3-(2-(7-chloro-2- quinolinyl)-ethenyl)phenyl)-3-(hydroxypropyl)phenyl)-2-propanol and 120 mL of N,N-dimethylformamide is poured into the flask and stirred until the diol dissolves completely. The content is cooled to between -20 and -15C in the CO2/acetone bath. After cooling 15.7 mL (11.43 g; 0.1130 mol) of triethylamine is added, the temperature is maintained at -20 to -15C and 12.38 g (8.4 mL; 0.1081 mol) of methanesulfonyl chloride is added dropwise over 40 minutes.

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, (S)-1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propan-1-ol, other downstream synthetic routes, hurry up and to see.

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. 18704-37-5, name is Quinoline-8-sulfonyl chloride, This compound has unique chemical properties. The synthetic route is as follows., Application In Synthesis of Quinoline-8-sulfonyl chloride

General procedure: Sulfonyl chloride 1 (0.2 mmol) was added into a solution of Na2SO3 (2.0 equiv) and NaHCO3 (2.0 equiv) in H2O (1.0 mL). The mixture was stirred at 80C for 4h. After evaporation of water, PhNHSCF3 2 (0.3 mmol), 4-methylbenzenesulfonic acid (0.5mmol) and DCE (2 ml) were added. The mixture was stirred at room temperature. After completion of the reaction as indicated by TLC, the reaction mixture was filtered by sand core funnel with silica gel and washed by CH2Cl2. The volatiles were removed and the residue was purified by flash column chromatography (SiO2) to provide the final products 3.

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 18704-37-5.

Synthetic Route of 3747-74-8, 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 3747-74-8 as follows.

General procedure: To a mixture of 3-bromo-4-nitrophenol (26, 4.91 g, 22.5 mmol), 2-(chloromethyl)quinoline hydrochloride (5.79 g, 27.0 mmol) and potassium iodide (374 mg, 2.25 mmol) in DMF (50 mL) was added K2CO3 (7.47 g, 54.1 mmol), and the mixture was stirred at 60 C for 90 min. After cooling at room temperature, the mixture was diluted with EtOAc, and washed with water and brine. The organic layer was dried over Na2SO4 and concentrated in vacuo. The residue was washed with EtOAc-hexane to give 27 (6.89 g, 85%) as a pale yellow solid.

According to the analysis of related databases, 3747-74-8, the application of this compound in the production field has become more and more popular.

Adding a certain compound to certain chemical reactions, such as: 881-07-2, name is 2-Methyl-8-nitroquinoline, belongs to quinolines-derivatives 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 881-07-2, SDS of cas: 881-07-2

Example 7 Synthesis of 2-methyl-8-aminoquinoleine (Compound Y) Ziessel, R.; Weibel, N.; Charbonniere, L. S. Synthesis 2006, 18, 3128-3133 2.110 g of 8-nitroquinaldine (11.19 mmol) are dissolved in 34 mL HI (57% aq). The reaction mixture is heated to 90 C. for 2 h. At ambient temperature, the reaction medium is neutralized with 150 mL of a NaHCO3 saturated aqueous solution. The aqueous phase is extracted with AcOEt (3*50 mL). The combined organic phases are washed with a Na2S2O3 saturated aqueous solution (2*50 mL), then with brine (2*50 ml). The organic phases are dried on MgSO4, filtered and evaporated under vacuum. The raw product is purified using a flash chromatography column on silica (eluent: CH2Cl2 100%). 1.251 g of a beige solid is obtained. Yield: 89%. deltaH (300 MHz, CD2Cl2) 2.69 (s, 3H), 4.96 (bs, 2H, NH2), 6.88 (dd, 1H, J 7.4 and 1.3 Hz), 7.09 (dd, 1H, J 8.1 and 1.3 Hz), 7.25 (m, 2H), 7.96 (d, 1H, J 8.4 Hz); RMN 13C: deltaC (75 MHz, CD2Cl2) 25.0, 109.8, 115.6, 122.2, 126.4, 127.0, 136.0, 137.8, 143.7, 156.3 ppm; IR: 3467, 3385, 3343, 2365, 3048, 2917, 1616, 1595, 1563, 1507, 1475, 1431, 1373, 1344, 1323, 1284, 1274, 1243, 1137, 1080, 1032, 828, 794, 744, 715, 692 cm-1. SM: El m/z: 158, 131, 103.

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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 634-47-9 as follows. name: 2-Chloro-4-methylquinoline

The chloroquinoline (100 mg, 0.56 mmol) and piperidine (0.22 ml, 2.25 mmol) were stirred in a microwave reaction vial. The vial was sealed and then irradiated under microwave at 200 ¡ãC with stirring for 15 min. LC/MS indicated reaction completion. The reaction mixture was diluted with MeOH and then concentrated under vacuum. The residue was dissolved in 3percent aqueous HC1 (10 ml) and washed with dichloromethane (2 x 5 ml). The aqueous layer was treated with 2 N NaOH until the pH was 8, resulting in a white slurry. The slurry was extracted with dichloromethane (3 x 20 ml). The combined organic layers were dried over Na2SO4 and concentrated to give 70 mg (55percent) of the product as a white solid. 1H NMR (400 MHz, DMSO-d6): delta 7.75 (d, J = 8.1 Hz, 1H), 7.52-7.45 (m, 2H), 7.21-7.17 (m, 1H), 7.10 (s, 1H), 3.67 (bs, 4H), 2.54 (s, 3H), 1.62-1.55 (m, 6H). LC/MS: RT = 0.65 min, m/z = 227.2 [M + H]+.

According to the analysis of related databases, 634-47-9, the application of this compound in the production field has become more and more popular.