Category: 4595-60-2

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. 4595-60-2, name is 2-Bromopyrimidine. This compound has unique chemical properties. The synthetic route is as follows. Quality Control of 2-Bromopyrimidine

General procedure: A Schlenk flask was charged with the catalyst, NaOt-Buand aryl halide, if solid, and the flask was evacuated and backfilled with nitrogen three times. Subsequently, a solution of the aryl halide, if liquid, and the amine in toluene was added. The resulting reaction mixture was stirred under nitrogen at the indicated temperature and time (see Tables incommunication). The crude mixture was absorbed onto silica gel (Merck Silica Gel 60 (0.040-0.063 mm)) and purified by flash column chromatography (MTBE/40-60 petroleum ether eluent).

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, 4595-60-2, 2-Bromopyrimidine.

Reference:
Patent; Johnson Matthey Public Limited Company; Colacot, Thomas John; Johansson Seechum, Carin; Parisel, Sebastien Laurent; (29 pag.)US10167305; (2019); B2;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

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. 4595-60-2, name is 2-Bromopyrimidine, molecular formula is C4H3BrN2, The 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. category: pyrimidines

4-Bromo-2-fluorophenyl boronic acid (2AB) (3.Og, 13.71 mmol, 1 equiv), 2- bromopyrimidine (1AB) (6.54 g, 41.13 mmol, 3 equiv), and 2M sodium carbonate (34 ml_) were added in a pressure vessel (350 ml_) and a (1 v : 1 v) mixture of toluene and ethanol (45 ml_ : 45 ml_) was added. The mixture was then bubbled with nitrogen gas for about 10 minutes. Tetrakistriphenylphosphine palladium (0) (793mg, 0.686 mmol, 0.05 equiv) was added to the mixture. The reaction vessel was tightly capped, placed in an oil bath at 9OC and stirred overnight. The reaction mixture was. cooled down to room temperature and the content was filtered into a flask and the solvent mixture was evaporated off on the rotovap. The residue was then taken up in one to one mixture of toluene and ethyl acetate and washed with (3v : 1v) mixture of brine and Dl water twice. The organic layer was separated and combined and dried over magnesium sulfate. The crude product was then filtered into a flask and the solvent was removed on rotovap. The residue was taken up in as little dichloromethane as possible and purified by column chromatography using Analogix purification system with the following conditions: Solvent A: Hexanes; Solvent B: Ethylacetate. Flow Rate: 65 mL/min. Gradient: 0% Solvent B to 50% Solvent B in 60 minutes. Yield= 2.79 g (80.4%)

With the rapid development of chemical substances, we look forward to future research findings about 4595-60-2.

Reference:
Patent; SCHERING CORPORATION; WO2008/153858; (2008); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Synthetic Route of 4595-60-2, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 4595-60-2, name is 2-Bromopyrimidine. This compound has unique chemical properties. The synthetic route is as follows.

Step 2: 2-(6-Bromopyridin-2-yl)pyrimidine Under argon, 54.5 ml (137.1 mmol) of a 2.5 molar solution of N-BuLi in 70 ml of THF were diluted with 70 ml of THF. At <-70 C., 32.5 g (137.1 mmol) of 2,6-dibromopyridine dissolved in 150 ml of THF were added dropwise. The mixture was stirred for 15 min and, still at <-70 C., 19.2 ml (107 mmol) of a 5.6-molar solution of zinc chloride in diethyl ether were then added. The mixture was allowed to thaw, a solution of 17.4 g (109 mmol) of bromopyrimidine in 50 ml of THF and a suspension of 3.9 g (3.4 mmol) of tetrakis(triphenylphosphine)palladium in 50 ml of THF were added. The mixture was boiled at reflux for 4 h and, after cooling, Na EDTA in water and dilute aqueous sodium hydroxide solution to pH=10 were added. The mixture was filtered off with suction to remove undissolved material, the aqueous phase was extracted three times with ethyl acetate and the combined organic phases were dried with MgSO4 and concentrated by evaporation. The residue was recrystallized from 60 ml of benzotrifluoride which involved brief heating to boiling point with activated carbon and hot filtration. Yield: 14.82 g (52% of theory), logP (HCOOH) 1.3 1H-NMR (CD3CN): 7.4 (t, 1H), 7.65 (d, 1H), 7.8 (dd, 1H), 8.4 (d, 1H), 8.9 (m, 2H) According to the analysis of related databases, 4595-60-2, the application of this compound in the production field has become more and more popular. Reference:
Patent; Bayer CropScience AG; US2011/212949; (2011); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Adding a certain compound to certain chemical reactions, such as: 4595-60-2, 2-Bromopyrimidine, 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, Application In Synthesis of 2-Bromopyrimidine, blongs to pyrimidines compound. Application In Synthesis of 2-Bromopyrimidine

Synthesis of 3-fluoro-2-(pyrimidin-2-yl)benzonitrile (Intermediate in the synthesis of intermediate A-2) To a solution of 3-fluoro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile (4.98 g, 19.1 mmol) and 2-bromopyridine (3.85 g, 23 mmol) in THF (96 mL) was added Na2CO3 (6 g, 57.4 mmol) followed by water (43 mL). The reaction mixture was degassed with N2 for 10 minutes. PdCl2(dtbpf) (374 mg, 0.57 mmol) was added and the reaction mixture was stirred at 80 C. for 5 h. The solution was cooled to room temperature and a mixture of EtOAc and water was added. The aqueous was extracted twice with EtOAc and the combined organic layers were dried over MgSO4, filtered and evaporated. The title compound was precipitated by dissolving the residue in a minimum amount of EtOAc and then adding hexanes. The solid was filtered, washed with hexanes and dried to afford the title compound (2.46 g, 64%). MS (ESI) mass calcd. for C11H6FN3, 199.1; m/z found 200.1 [M+H]+. 1H NMR (400 MHz, Chloroform-d) delta 9.02-8.91 (m, 2H), 7.65 (dt, J=7.7, 1.0 Hz, 1H), 7.60-7.52 (m, 1H), 7.51-7.43 (m, 1H), 7.41 (t, J=4.9 Hz, 1H).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,4595-60-2, 2-Bromopyrimidine, and friends who are interested can also refer to it.

Reference:
Patent; Janssen Pharmaceutica NV; GELIN, Christine F.; LEBOLD, Terry P.; SHIREMAN, Brock T.; US2014/275118; (2014); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Reference of 4595-60-2, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.4595-60-2, name is 2-Bromopyrimidine, molecular formula is C4H3BrN2, molecular weight is 158.984, as common compound, the synthetic route is as follows.

In a 250 round bottom flask was placed butyl lithium (6.1 mL, 2.5 M in hexanes, 15.2 mmol) in THF at -78 C under Ar. To this was added 6 (2.0 g, 12.7 mmol), stirred for 15 min and added Zinc chloride (38.1 mL, 0.5 M in THF, 19.1 mmol). The mixture was warmed up to room temperature and stirred for 1 hr. To this was added 2-bromopyrimidine (2.4 g, 15.2 mmol) and Pd(PPh3J4 (293 mg, 0.252 mmol). The reaction was heated to reflux overnight, cooled to room temperature and filtered. The filtrate was partitioned between brine and ethyl acetate. The organic layer was dried over sodium sulfate and concentrated. The resulting mixture was purified by biotage column chromatography to afford 7AS (936 mg, 54.2%)

Statistics shows that 4595-60-2 is playing an increasingly important role. we look forward to future research findings about 2-Bromopyrimidine.

Reference:
Patent; SCHERING CORPORATION; WO2008/156739; (2008); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

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. 4595-60-2, name is 2-Bromopyrimidine, molecular formula is C4H3BrN2, The 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. Application In Synthesis of 2-Bromopyrimidine

A mixture of 2-bromopyrimidine (0.43g,2.70mmol), 2-bromopyridine-5-boronic acid (0.55g,2.72mmol), tetrakis(triphenylpnosphine)palladium(0) (3OOmg, 0.259mmol), cesium carbonate (1.15g, 3.03mmol) was stirred in MeOH/toluene/water (15ml, 1/1/1) at reflux temperature overnight. The reaction was cooled to room temperature and diluted with EtOAc (200ml) and water (50ml). The organic layer was separated, dried over MgSd, filtered and solvent evaporated yielding a residue which was purified on silica gel eluting with 25% v/vEtOAc/hexanes yielding product 76 as white solid. (0.55g, 85%) ESMS (MH, 236).

With the rapid development of chemical substances, we look forward to future research findings about 4595-60-2.

Reference:
Patent; SCHERING CORPORATION; WO2007/70398; (2007); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Electric Literature of 4595-60-2, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 4595-60-2, name is 2-Bromopyrimidine. This compound has unique chemical properties. The synthetic route is as follows.

A mixture of 2-bromopyridine (0.43g,2.70mmol), 2-bromopyridine-5-boronic acid (0.55g,2.72mmol), tetrakis(triphenylphosphine)palladium(0) (3OOmg, 0.259mmol), cesium carbonate (1.15g, 3.03mmol) was stirred in MeOH/toluene/water (15ml, 1/1/1) at reflux temperature overnight. The reaction was cooled to room temperature and diluted with EtOAc (200ml) and water (50ml). The organic layer was separated, dried over MgSO4,filtered and solvent evaporated yielding a residue which was purified on silica gel eluting with 25% v/vEtOAc/hexanes yielding product 76 as white solid. (0.55g, 5%) ESMS (MH, 236).

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 4595-60-2, 2-Bromopyrimidine.

Reference:
Patent; SCHERING CORPORATION; WO2007/97937; (2007); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Related Products of 4595-60-2, The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 4595-60-2, name is 2-Bromopyrimidine. This compound has unique chemical properties. The synthetic route is as follows.

Step 3: 2-(6-Bromopyridin-2-yl)pyrimidine Under argon, 54.5 ml (137.1 mmol) of a 2.5-molar solution of n-butyllithium (n-Buli) were diluted with 70 ml of THF. At a temperature of less than -70 C., 32.5 g (137.1 mmol) of 2,6-dibromopyridine, dissolved in 150 ml of THF, were added dropwise. The mixture was stirred for 15 min and, still at a temperature of less than -70 C., 9.2 ml (107 mmol) of a 5.6-molar solution of zinc chloride in diethyl ether were then added. The mixture was allowed to thaw, and a solution of 17.4 g (109 mmol) of bromopyrimidine in 50 ml of THF and a suspension of 3.9 g (3.4 mmol) of tetrakis(triphenylphosphine)palladium in 50 ml of THF were added. The mixture was boiled under reflux for 4 h, and after cooling Na-EDTA in water and dilute aqueous sodium hydroxide solution to pH=10 were added. The mixture was filtered off with suction to remove undissolved particles, the aqueous phase was extracted three times with ethyl acetate, the combined organic phases were dried with MgSO4 and the mixture was concentrated by evaporation.

While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 4595-60-2, 2-Bromopyrimidine.

Reference:
Patent; Bayer CropScience AG; US2011/166143; (2011); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Application of 4595-60-2, Adding some certain compound to certain chemical reactions, such as: 4595-60-2, name is 2-Bromopyrimidine,molecular formula is C4H3BrN2, 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 4595-60-2.

Add to dry three-necked flask with reflux condenser and magnetic rotor 2,7-dibromo-carbazole (1.66g, 5.10mmol, 1.0 eq), 2-bromopyrimidine (0.97 g, 6.10 mmol, 1.2 equiv.), Copper (I) iodide (19.4 mg, 0.10 mmol, 0.02 eq) Lithium tert-butoxide (0.82 g, 10.2 mmol, 2.0 equiv.), Nitrogen replacing three times an d then 1-methylimidazole (16.0 uL, 0.20 mmol, 0.04 equiv) and toluene (20 mL) were added. The reaction mixture was refluxed with stirring at 130 C for 1 day. The TLC was monitored by TLC to obtain the starting 2,7-dibromocarbazole. Saturated sodium sulfite solution was quenched, filtered, washed thoroughly with ethyl acetate, separated from the organic phase in the mother liquor, dried over anhydrous sodium sulfate, filtered and evaporated under reduced pressure to remove the solvent. The resulting crude product was purified by silica gel column chromatography eluting with petroleum ether / methylene chloride = 5: 1 to 3: 2 to give 2.03 g of A-2Br as a white solid in a yield of 99%.

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. 4595-60-2, 2-Bromopyrimidine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Zhejiang University of Technology; Ruisheng Optoelectric Science And Technology (Changzhou) Co., Ltd.; Li Guijie; She Yuanbin; Zhao Xiangdong; Chen Shaohai; (45 pag.)CN107383108; (2017); A;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

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. 4595-60-2, name is 2-Bromopyrimidine. This compound has unique chemical properties. The synthetic route is as follows. COA of Formula: C4H3BrN2

INTERMEDIATE 8; Step A; A 3-neck round bottomed flask equipped with an addition funnel and condenser and containing zinc dust (2.45 g, 37.4 mmol) was flame dried. After cooling, and purging the system with nitrogen gas, 6 mL of THF was added, followed by 1,2-dibromoethane (0.298 mL, 3.46 mmol). The mixture was warmed to a vigorous reflux using a heat gun and stirred at reflux for 30 seconds (gas evolution was observed), then cooled to room temperature. The warming and cooling was repeated two more times. Then chlorotrimethylsilane (0.402 mL, 3.17 mmol) was added and the mixture was stirred at room temperature for 20 minutes. N-t-butoxycarbonyl-4-iodo-piperidine (known: Billotte, S. Synlett (1998), 379, 8.97 g, 28.8 mmol) in 15 mL of THF was added over a period of about 1 minutes. The reaction mixture was stirred at 50 C. for 1.5 h, then was cooled to room temperature. Meanwhile, a mixture of tri-2-furylphosphine (267 mg, 1.15 mmol) and Tris(dibenzylideneacetone)-dipalladium(0) chloroform adduct (298 mg, 0.288 mmol) was dissolved in 6 mL of THF under a nitrogen atmosphere, stirred for 15 minutes at room temperature, and added to the organozinc solution. Then a solution of 2-bromopyrimidine (5.50 g, 34.6 mmol) in a mixture of 58 mL of THF and 20 mL of N,N-dimethylacetamide was added. The reaction mixture was warmed to 80 C. and stirred for 3.5 h, then was cooled to room temperature and stirred for 36 h. The reaction mixture was filtered through celite and the filter cake was washed with ethyl acetate. The filtrate was diluted further with ethyl acetate, and washed with saturated NaHCO3 solution. The aqueous layer was back extracted with ethyl acetate, the organic layers were combined and washed twice with water and once with brine. The organic phase was dried over anhydrous MgSO4, filtered, and concentrated. Purification by flash chromatography (silica, stepwise gradient: 25% ethyl acetate/hexane, 40% ethyl acetate/hexane, 60% ethyl acetate/hexane, 80% ethyl acetate/hexane, 100% ethyl acetate) to afford 4.92 g of pure 4-(2-pyrimidyl)-piperidine product (65%). 1H NMR (500 MHz, CDCl3): delta 8.70 (d, J=5.0 Hz, 2H), 7.16 (app t, J=4.5 Hz, 1H), 4.24 (br s, 2H), 3.05 (m, 1H), 2.89 (br m, 2H), 2.01 (br d, J=13 Hz, 2H), 1.84 (dq, J=4.5, 12.5 Hz, 2H), 1.49 (s, 9H).

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, 4595-60-2, 2-Bromopyrimidine.

Reference:
Patent; Butora, Gabor; Goble, Stephen D.; Pastemak, Alexander; Yang, Lihu; Zhou, Changyou; Moyes, Christopher R.; US2008/81803; (2008); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia