Pyrimidines

Electric Literature of 181950-57-2, 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 181950-57-2 as follows.

To a 100 ml round bottom flask was added 4-chloro-7-hydroxy quinoline (0.89 g, 5 mmol)Acetone (40 ml) and anhydrousK2C03 (2.0 g) was stirred at room temperature for 15 minutes,Followed by the addition of iodo butane (20 mmol)TLC trace detection.Reaction is completed,The acetone was distilled off under reduced pressure, 150 mL of water was added and the mixture was extracted with ethyl acetate. The combined organic phases were acidified by adding concentrated hydrochloric acid,With water to give a yellow oil, recrystallized from acetone, precipitated white crystals, filtered and basified to give a white solid ( 0.57 g Rate of 47.6%)

According to the analysis of related databases, 181950-57-2, the application of this compound in the production field has become more and more popular.

Related Products of 4965-36-0, The chemical industry reduces the impact on the environment during synthesis 4965-36-0, name is 7-Bromoquinoline, I believe this compound will play a more active role in future production and life.

General procedure: Compound 88-1 (7.6 g, 20 mmol) and 2-bromopyridine (4.7 g, 20 mmol) were dissolved in toluene (80 mL), then Pd(PPh3)4 (1.1 g, 1 mmol) and K2CO3 (8.3 g, 60 mmol) were added thereto, and the result was stirred for 10 minutes. After that, H2O (16 mL) and EtOH (16 mL) were added thereto, and the result was refluxed for 12 hours. After the reaction was completed, the result was cooled to room temperature, and extracted with distilled water and Mc. After the organic layer was dried with anhydrous Na2O4, the solvent was removed using a rotary evaporator, and the result was purified using column chromatography with ethyl acetate and hexane as a developing solvent to obtain target Compound 88 (7.3 g, 85%).

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, 7-Bromoquinoline, other downstream synthetic routes, hurry up and to see.

Adding a certain compound to certain chemical reactions, such as: 580-19-8, name is Quinolin-7-amine, 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 580-19-8, Recommanded Product: Quinolin-7-amine

(c) (6-Chloropyrimidin-4-yl)-quinolin-7-yl-amine. A mixture of 4,6-dichloro-pyrimidine (1.04 g, 7.0 mmol, Lancaster), 7-aminoquinoline (1.00 g, 7.0 mmol, SynChem Inc.) and potassium carbonate (1.93 g, 14.0 mmol) in DMF (5.0 mL) was heated at 100¡ã C. with stirring for 24 h. The reaction mixture was allowed to cool to room temperature, diluted with water, and the resulting solid precipitate was filtered. The filter cake was dissolved in a mixture of CH2Cl2 and MeOH (3:1), washed with water and brine, dried over Na2SO4, and filtered. The filtrate was evaporated under reduced pressure, and the brown-yellow solid residue was suspended in CH2Cl2, filtered, and washed with CH2Cl2. The filter cake was dried in vacuo to give the title compound as a light-yellow solid. MS (ESI, pos. ion.) m/z: 257 (M+1).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, Quinolin-7-amine, and friends who are interested can also refer to it.

Adding a certain compound to certain chemical reactions, such as: 417721-36-9, name is 4-Chloro-7-methoxyquinoline-6-carboxamide, 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 417721-36-9, name: 4-Chloro-7-methoxyquinoline-6-carboxamide

Firstly, 1-(2-chloro-4-hydroxyphenyl)-3-cyclopropylurea was obtained in a similar manner as Preparation Example 1, and 7-methoxy-4-chloro-quinoline-6-carboxamide was obtained in a similar manner as Preparation Example 2. Secondly, to a mixture of 1-(2-chloro-4-hydroxyphenyl)-3-cyclopropylurea (11.49 g), 7-methoxy-4-chloroquinoline-6-carboxamide (8.00 g) and potassium t-butoxide (5.69 g) was added DMSO (80 mL) at room temperature, and the mixture was heated and stirred at 60 C. for 25 hours. The reaction mixture was divided into four equal parts. To an aliquot was added dropwise 33% (v/v) acetone-water (10 mL) over 3 hours at 60 C. with stirring to allow the crystals to appear. Additional 33% (v/v) acetone-water (20 mL) was added dropwise over 1 hour, and the stirring was continued at 40 C. for 5 hours. The resultant crystals were filtered off, washed with 33% (v/v) acetone-water and acetone, and dried to give 3.22 g of white fibrous crystals (the polymorph (B)).; Examples 2b, 2c and 2d A polymorph (B) of 4-(3-chloro-4-(cyclopropylaminocarbonyl)aminophenoxy)-7-methoxy-6-quinolinecarboxamide was obtained in a similar manner as Example 2a.

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, 4-Chloro-7-methoxyquinoline-6-carboxamide, other downstream synthetic routes, hurry up and to see.

Related Products of 391-82-2,Some common heterocyclic compound, 391-82-2, name is 4-Chloro-7-fluoroquinoline, molecular formula is C9H5ClFN, 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 mixture of compound 1VI (0.040 g, 0.22 mmol), m-chloroaniline (0.036 g, 0.31 mmol) and pyridine hydrochloride was heated at reflux for 45 min in isopropanol (6 mL), after the reaction is over by TLC, it was cooled to room temperature and the petroleum ether (4 mL) and NaHCO3 (10 mL) were added into the reaction mixture. The product was filtered and recrystallised from ethanol to give the title compound 1. Compound 2 was prepared in the same manner as 1.

The synthetic route of 391-82-2 has been constantly updated, and we look forward to future research findings.

Adding a certain compound to certain chemical reactions, such as: 26892-90-0, name is Ethyl 4-hydroxyquinoline-3-carboxylate, 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 26892-90-0, Formula: C12H11NO3

WeighEthyl 4-hydroxy-2-hydro-quinoline-3-carboxylate(2.0 g) was dissolved in an appropriate amount of dioxane, then added with phosphorus oxychloride (0.68 mL), and then heated under reflux for 1 hour. After the reaction was completed, the reaction solution was poured into ice water and extracted with ethyl acetate (100 mL) The organic phase is combined, the organic phase is washed with brine, dried over anhydrous sodium sulfate(63% yield).

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, Ethyl 4-hydroxyquinoline-3-carboxylate, 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. 661463-17-8, name is 4-Bromo-6-fluoroquinoline, A new synthetic method of this compound is introduced below., Formula: C9H5BrFN

The compound 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydropyridine-1(2H)-carboxylic acid tert-butyl ester14a (1.64 g, 5.3 mmol), 4-bromo-6-fluoroquinoline (1 g, 4.4 mmol), tetrakis(triphenylphosphine)palladium (508 mg, 0.44 mmol), potassium carbonate (1.22 g, 8.8 mmol), water (2 ml) and 1,4-dioxane (10 ml) were mixed, and then heated in a microwave reactor at 110 C for 30 minutes under a nitrogen atmosphere. After cooling to room temperature, it was filtered, and the filtrate was evaporated under reduced pressure. To give the desired product 4-(6-fluoroquinolin-4-yl)-3,6-dihydropyridine-1(2H)-carboxylic acid tert-butyl ester 14b (2g, crude).This product was used directly in the next step without further purification.

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. 33985-71-6, name is 1,2,3,5,6,7-Hexahydropyrido[3,2,1-ij]quinoline-9-carbaldehyde, A new synthetic method of this compound is introduced below., SDS of cas: 33985-71-6

General procedure: A mixture of an aromatic or heteroaromatic aldehyde(10.00 mmol) and an active methylene compound (10.0mmol) in acetic anhydride (15 mL) was stirred underexclusion of moisture in a water bath at 90C for 8 h.Under consumption of the starting material a deeply colouredsolution was observed and by the time a crystallineprecipitate was formed. After cooling to 0C the precipitatewas filtered off by suction, washed exhaustively withmethanol (100-200 mL) until the filtrate showed thecolour of the desired product in solution and then dried inair at room temperature.The following compounds were so prepared.

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 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. Computed Properties of C10H9Cl2N

EXAMPLE 8 A mixture of 2-[1-hydroxy-1-(3-hydroxyphenyl)-2,2,2-trifluoroethyl]thiazole (0.33 g), 2-chloromethylquinoline hydrochloride (0.22 g), potassium carbonate (0.5 g) and dimethylformamlde (5 ml) was stirred at ambient temperature for Z4 hours. The mixture was partitioned between ethyl aceiate and water and the organic layer was separated, washed with a saturated aqueous sodium chloride solution, dried (MgSO4) and evaporated. The residue was purified by column chromatography eluding with chloroform/ethyl acetate (9/1 v/v) to give 2-[1-hydroxy-1-[3-(quinol-2-ylmethoxy)phenyl]-2,2,2-trifluoroethyl]thiazole (0.15 g, 30%), m.p. 177 C.

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.

Related Products of 56826-69-8, 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 56826-69-8 as follows.

A 150 mL toluene solution of 5,6,7-trihydroquinolin-8-one (0.882 g, 5.99 mmol), 2-benzhydrylnaphthylamine (2.04 g, 6.59 mmol), and a catalytic amount of p-toluenesulfonic acid (0.228 g, 1.20 mmol) was refluxed for 8 h. The solvent was evaporated under reduced pressure, and then the mixture was purified by column chromatography on basic alumina with petroleum ether/ethyl acetate (v/v = 10:1) as eluent to afford the product as a yellow powder in 37% yield. Mp: 165-166 C. 1H NMR (400 MHz, CDCl3, TMS): deltaH 8.80 (d, 1H, 3JHH = 3.2 Hz, Py-H), 7.79 (d, 1H, 3JHH = 8.0 Hz, Py-H), 7.57 (d, 1H, 3JHH = 8.4 Hz, Py-H), 7.50 (d, 2H, 3JHH = 8.4 Hz, Ar-H), 7.41-7.08 (m, 14H, Ar-H), 5.92 (s, 1H, -CHPh2), 2.72-2.64 (m, 1H, -CH2), 2.53-2.46 (m, 1H, -CH2), 1.90-1.83 (m, 1H, -CH2), 1.20-1.13 (m, 1H, -CH2), 0.88-0.77 (m, 2H, -CH2). 13C NMR (100 MHz, CDCl3, TMS): 167.8, 149.8, 148.9, 146.2, 144.5, 142.9, 137.5, 137.2, 132.8, 130.2, 129.7, 128.6, 128.3, 128.1, 127.6, 126.1, 125.5, 125.0, 123.5, 122.5, 51.8, 31.4, 29.2, 21.2. FT-IR (KBr, disk, cm-1): 3054, 3026, 1641 (nuC=N), 1564, 1488, 1450, 1428, 1375, 1315, 1199, 1097, 1028, 790, 745, 701. Anal. Calc.d for C32H26N2 (438.21): C, 87.64; H, 5.98; N, 6.39%; Found: C, 87.48; H, 6.22; N, 6.27%.

According to the analysis of related databases, 56826-69-8, the application of this compound in the production field has become more and more popular.