Extracurricular laboratory: Synthetic route of 2-Bromopyrimidine

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,4595-60-2, its application will become more common.

Application of 4595-60-2, 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 4595-60-2 as follows.

General procedure: A magnetic stirring bar, nanocrystalline CuO (10 mg, 3 mol %), KOH (112 mg, 2 mmol) and phenol/substituted phenol/ thiophenol (1.2 mmol) were added into an oven-dried flask (25 mL). The flask was sealed with a septum, followed by three cycles of evacuation and filling with dry nitrogen. Then aryl halide (1 mmol) and N,N-dimethyl acetamide (DMAc) (4 mL) were injected through a syringe. The flask was sealed and stirred under nitrogen until the completion of the reaction (as monitored by TLC or GC). The catalyst was recovered from the reaction mixture and washed several times with ethyl acetate. The catalyst-free reaction mixture was quenched with brine solution and the product was extracted with ethyl acetate. The combined organic extracts were dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated and the residue was purified by column chromatography on silica gel (hexane/ethyl acetate, 80/20) to afford the product with high purity.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,4595-60-2, its application will become more common.

Reference:
Article; Babu, S. Ganesh; Karvembu; Tetrahedron Letters; vol. 54; 13; (2013); p. 1677 – 1680;,
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Introduction of a new synthetic route about 4-(Dimethoxymethyl)-2-(methylthio)pyrimidine

According to the analysis of related databases, 180869-36-7, the application of this compound in the production field has become more and more popular.

Reference of 180869-36-7, Adding some certain compound to certain chemical reactions, such as: 180869-36-7, name is 4-(Dimethoxymethyl)-2-(methylthio)pyrimidine,molecular formula is C8H12N2O2S, 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 180869-36-7.

Example 29A (14.6 g) was dissolved in methanol (122 mL) and water (122 mL) and the stirring mixture was cooled with an ice bath then oxone (potassium peroxomonosulfate) (67.2 g) was added portionwise over 15 minutes. The resulting mixture was stirred at 0 C for 3 hours, and the cooling bath was removed to allow for the reaction to stir at room temperature for an additional 2 hours. The mixture was concentrated to remove most of the methanol and the remaining aqueous mixture was filtered and washed with ~200 mL of methylene chloride. The biphasic mixture was poured into a separatory funnel, the organic layer was removed and the aqueous layer was washed with one portion of methylene chloride. The organic layers were combined, dried over anhydrous magnesium sulfate, filtered and concentrated onto silica gel. Purification by flash chromatography on a CombiFlash Teledyne Isco system using a Teledyne Isco RediSep Rf gold 330 g silica gel column (eluting 50-100% ethyl acetate/heptane) afforded the title compound. MS (APCI) m/z 233.3 (M+H)+.

According to the analysis of related databases, 180869-36-7, the application of this compound in the production field has become more and more popular.

Reference:
Patent; ABBVIE INC.; ABBVIE DEUTSCHLAND GMBH & CO. KG; BRAJE, Wilfried; DOHERTY, George; JANTOS, Katja; JI, Cheng; JUDD, Andrew; KUNZER, Aaron; MASTRACCHIO, Anthony; SONG, Xiaohong; SOUERS, Andrew; SULLIVAN, Gerard; TAO, Zhi-Fu; LAI, Chunqui; KLING, Andreas; POHLKI, Frauke; TESKE, Jessc; WENDT, Michael; BRADY, Patrick; WANG, Xilu; PENNING, Thomas; MICHAELIDES, Michael; (448 pag.)WO2019/35927; (2019); A1;,
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Simple exploration of 1004-40-6

The synthetic route of 1004-40-6 has been constantly updated, and we look forward to future research findings.

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. 1004-40-6, name is 6-Amino-4-hydroxy-2-mercaptopyrimidine, the common compound, a new synthetic route is introduced below. Recommanded Product: 1004-40-6

General procedure: A mixture of aminouracil (1 mmol), isatin (1 mmol), and carbonyl compound (1 mmol) in DES (1 ml) was stirred on magnetic stirrer at 70oC for nearly 35-55 min. The progress of the reaction was monitored by TLC. After completion of the reaction, the reaction mixture was poured on crushed ice.The DES remained in water and solid product was separated by filtration. The DES was recovered from the filtrate by evaporation. The recovered DES was reused three-four times with comparable yields.

The synthetic route of 1004-40-6 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Khandelwal, Sarita; Rajawat, Anshu; Tailor, Yogesh Kumar; Kumar, Mahendra; Combinatorial Chemistry and High Throughput Screening; vol. 17; 9; (2014); p. 763 – 769;,
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Some tips on 6-Amino-1-methylpyrimidine-2,4(1H,3H)-dione

With the rapid development of chemical substances, we look forward to future research findings about 2434-53-9.

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 2434-53-9, name is 6-Amino-1-methylpyrimidine-2,4(1H,3H)-dione. This compound has unique chemical properties. The synthetic route is as follows. SDS of cas: 2434-53-9

General procedure: A mixture of isatin 1 (1 mmol), 1,3-indandion 2 (1 mmol), aminouracil 3 (1 mmol) andSBA-oxime-Zn (0.1 g) was heated in refluxing water(5 mL) for appropriate time (Table 1). The reactionwas monitored by TLC (n-hexane-ethyl acetate 1:1),and after completion of the reaction, the reactionmixture was filtered for separation of solid productand catalyst from water. The remaining solid waswashed with ethanol (2×10 mL) for separation ofthe product from the catalyst. Finally, the productwas purified by recrystallization in hot EtOH. The desired pure products were characterized bycomparison of their melting point data with literature.All the products are known compoundsand their melting points are compared with reportedvalues [14]. Some selected samples were alsocharacterized by IR and NMR spectroscopic data.

With the rapid development of chemical substances, we look forward to future research findings about 2434-53-9.

Reference:
Article; Ghorbani, Sayed Hosein; Hashemi, Mohammad Mahmoodi; Oriental Journal of Chemistry; vol. 31; (2015); p. 181 – 188;,
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Extended knowledge of 42754-96-1

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 42754-96-1, 4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine.

Synthetic Route of 42754-96-1, 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 42754-96-1, name is 4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine. This compound has unique chemical properties. The synthetic route is as follows.

4,6-dichloro-1H-pyrazolo[3,4-djpyrimidine (2.50 g, 13.23 mmol) was added to a flask and dissolved in 1,4-dioxane (52.9 ml). p-Toluenesulfonic acid monohydrate (pTsOH, 0.25 g, 1.32 mmol) was then added to the clear, pale yellow solution followed by 3,4-dihydro-2h-pyran (1.8 ml, 19.84 mmol) and the reaction was heated to 40 C andstirred overnight. The resulting mixture was then cooled and concentrated in vacuo. The cmde was purified by flash column chromatography using a 0-100% EtOAc:hexanes gradient to yield 4,6-dichloro- 1 -(tetrahydro-2H-pyran-2-yl)- 1H-pyrazolo[3 ,4- djpyrimidine (2.6 g, 9.52 mmol, 72.0 % yield). (m/z,): [M+Hj calculated for C10H10C12N4O 274.0 found 188.9 (loss of THP fragment).

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 42754-96-1, 4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine.

Reference:
Patent; THERAVANCE BIOPHARMA R&D IP, LLC; FENSTER, Erik; LAM, Tom M.; LOO, Mandy; MCKINNELL, Robert Murray; PALERMO, Anthony Francesco; WANG, Diana Jin; FRAGA, Breena; NZEREM, Jerry; DABROS, Marta; THALLADI, Venkat R.; RAPTA, Miroslav; (217 pag.)WO2019/27960; (2019); A1;,
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Sources of common compounds: 2,4-Dichloro-5-nitropyrimidine

According to the analysis of related databases, 49845-33-2, the application of this compound in the production field has become more and more popular.

Related Products of 49845-33-2, 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 49845-33-2, name is 2,4-Dichloro-5-nitropyrimidine. This compound has unique chemical properties. The synthetic route is as follows.

A heterogeneous solution of 2.4-dichloro-5-nitro-pyrimidine (1.0 eq.) and iron (6.0 eq) in acetic acid, at a concentration of 0.4 M, was stirred vigorously for 14 hours. The mixture was then passed through a celite pad, eluting with MeOH. Upon removal of the volatiles in vacuo, the residue was dissolved in EtOAc, washed with Na2CO3(sat.), NaCl(sat.), was dried over MgSO4, was filtered and the volatiles were removed in vacuo yielding 2,4-dichloropyrimidin-5-amine (80%). LCMS (m/z): 157.0 (MH+); LC Rt=1.85 min.

According to the analysis of related databases, 49845-33-2, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Burger, Matthew; Lindvall, Mika; US2011/195980; (2011); A1;,
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Extended knowledge of 4,6-Dichloro-2-methylpyrimidin-5-amine

The synthetic route of 39906-04-2 has been constantly updated, and we look forward to future research findings.

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. 39906-04-2, name is 4,6-Dichloro-2-methylpyrimidin-5-amine, the common compound, a new synthetic route is introduced below. name: 4,6-Dichloro-2-methylpyrimidin-5-amine

Preparation 1 6-Chloro-N*4*-(4-methoxyphenyl)-2-methylpyrimidine-4,5-diamine; 4,6-dichloro-2-methyl-pyrimidin-5-ylamine (985.3 g, 5.53 MoI) was added with stirring to a 2OL reactor charged with EtOH (4.0 L) over 3 minutes to give complete solution. p-Anisidine (718.0 g, 5.83 MoI) was then added with stirring over 3 minutes. A dark brown solution was observed and addition of both reagents gave an exotherm of 130C. EtOH (1 L) was then added followed by a premixed solution of c.HCI (0.5 L) in EtOH (2 L) at a steady rate over 40 minutes. A slight exotherm up to approx 2O0C was noted. The solution was then warmed to 8O0C and held at that temperature for 3.5 hours during which a grey precipitate appeared. Heating was continued for a further 2 hours then the temperature was reduced to 490C, and stirring was continued for 19 hours. The reaction mixture was allowed to cool to 3O0C, before draining out of 2OL reactor. The reaction mixture was filtered to collect a beige precipitate. Washed with EtOH (2.5 L), the MTBE (2.5 L) and sucked dry under N2(g) for 22 hours. The filter cake was then dried under vacuum at 5O0C for 60 hours, to yield title compound, as the hydrochloride salt, as a beige solid (1.465 Kg, 88%). 1H NMR (400MHz, DMSO-d6) delta = 2.27 (s, 3H), 3.71 (s, 3H), 6.90 (d, 2H), 7.58 (d, 2H), 9.10 (bs, 1 H). LCMS (System 4): 2.4 mins m/z (APCI) 265 [MH+]

The synthetic route of 39906-04-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PFIZER LIMITED; WO2009/144632; (2009); A1;,
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Some tips on 22536-66-9

The synthetic route of 22536-66-9 has been constantly updated, and we look forward to future research findings.

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. 22536-66-9, name is 2-Chloropyrimidine-4-carboxamide, the common compound, a new synthetic route is introduced below. Quality Control of 2-Chloropyrimidine-4-carboxamide

A mixture of 3-{[2-amino-6-(3-chloro-2-methylphenyl) pyrimidin-4-yl]ami no}propan1-01 (intermediate 24), 2-chloropyrimidine-4-carboxamide (1.1 equiv.) and 0s2003(2.0 equiv.) in DMSO was heated in a sealed tube at 90C for 2 h. After coolingwas methanol added to the solution, followed by filtration and purification by preparative LC to furnish the title compound. LCMS [M+H]414. 1H NMR (400MHz, METHANOL-d4) oe ppm 8.79 (d, J=5.1 Hz, 1 H), 7.69 (s, 1 H), 7.55 – 7.63(m, 1 H), 7.30 – 7.41 (m, 3 H), 6.04 (s, 1 H), 4.59 (t, J=6.0 Hz, 2 H), 3.76 (t, J=6.8Hz, 2 H), 2.18 (quin, J=6.3 Hz, 3 H).

The synthetic route of 22536-66-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; THOMAS HELLEDAYS STIFTELSE FOeR MEDICINSK FORSKNING; SCOBIE, Martin; WALLNER, Olov; KOOLMEISTER, Tobias; VALLIN, Karl Sven Axel; HENRIKSSON, Carl Martin; JACQUES, Sylvain; HOMAN, Evert; HELLEDAY, Thomas; WO2015/187088; (2015); A1;,
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A new synthetic route of 2-Chloropyrimidine-5-carbonitrile

According to the analysis of related databases, 1753-50-0, the application of this compound in the production field has become more and more popular.

Related Products of 1753-50-0, 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 1753-50-0, name is 2-Chloropyrimidine-5-carbonitrile. This compound has unique chemical properties. The synthetic route is as follows.

To a stirred solution of compound HK (0.2 g, 0.67 mmol) in EtOH (5 mL) was added DIPEA (0.25 g, 2.01mmol) followed by 2-chloropyrimidine-5-carbonitrile (AF, 0.09 g, 0.67 mmol) and the reaction mixture was stirred at 90C for 16 h. The progress of reaction was monitored by TLC. After completion of the reaction, the reaction mixture was concentrated under reduced pressure to yield crude compound which was purified by silica gel column chromatography using 50% EtOAc/hexane to afford compound HL (0.7 g, 65.5%) as an off white solid. 1H NMR (400 MHz, DMSO-d6): _ 8.83 (d, / = 8.4 Hz, 1H), 8.71 (d, J = 2.8 Hz, 2H), 7.53 (d, = 8.0 Hz, 2H), 7.35 (d, = 8.4 Hz, 2H), 7.27 (t, = 5.8 Hz, 1H), 5.27-5.21 (m, 1H), 3.46-3.34 (m, 2H), 2.84 (s, 3H); LC-MS: mJz 402.10 [M+H]+.

According to the analysis of related databases, 1753-50-0, the application of this compound in the production field has become more and more popular.

Reference:
Patent; VPS-3, INC.; YATES, Christopher, M.; (397 pag.)WO2018/165520; (2018); A1;,
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Introduction of a new synthetic route about 7752-78-5

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. 7752-78-5, 5-Bromo-2-methylpyrimidine, other downstream synthetic routes, hurry up and to see.

Application of 7752-78-5, Adding some certain compound to certain chemical reactions, such as: 7752-78-5, name is 5-Bromo-2-methylpyrimidine,molecular formula is C5H5BrN2, 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 7752-78-5.

To the above mixture, 5-bromo-2-methylpyrimidine (75.7 mg, 0.44 mmol) was added followed by water (1 mL) and K2C03 (110.4 mg, 0.80 mmol), and the mixture was degassed under N2 three times. Pd(PPh3)4 (46.2 mg, 0.04 mmol) was added, and the resulting mixture was stirred at 95 °C under N2 atmosphere for 16 hours. The reaction mixture was concentrated to dryness and diluted with EtOAc, washed with water and brine, dried over Na2SO4 and concentrated to dryness. The residue was purified by column chromatography on silica gel (PE: EtOAc= 2: 1) to give compound 44S-13 (110 mg, 62.9percent yield) as a white solid. LC/MS (ESI) m/z: 437 (M+H)t

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. 7752-78-5, 5-Bromo-2-methylpyrimidine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; ACHILLION PHARMACEUTICALS, INC.; WILES, Jason, Allan; PHADKE, Avinash, S.; CHEN, Dawei; GADHACHANDA, Venkat, Rao; BARRISH, Joel, Charles; AGARWAL, Atul; EASTMAN, Kyle, J.; (0 pag.)WO2018/160892; (2018); A1;,
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