Tag: M.W=0-100

Related Products of 51953-18-5 , The common heterocyclic compound, 51953-18-5, name is Pyrimidin-4-ol, molecular formula is C4H4N2O, 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.

Method L Preparation of 5-Iodo-4(3H)-pyrimidinone The procedure of Sakamoto et. al. (Chem. Pharm. Bull. 1986, 34(7), 2719-2724) was used to convert 4(3H)-pyrimidinone into 5-iodo-4(3H)-pyrimidinone.

The synthetic route of 51953-18-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Konradi, Andrei W.; Pleiss, Michael A.; Thorsett, Eugene D.; Ashwell, Susan; Welmaker, Gregory S.; Kreft, Anthony; Sarantakis, Dimitrios; Dressen, Darren B.; Grant, Francine S.; Semko, Christopher; Xu, Ying-Zi; US2002/52470; (2002); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Reference of 557-01-7 ,Some common heterocyclic compound, 557-01-7, molecular formula is C4H4N2O, 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.

In a 250 mL three-necked flask,Compound 2 (11.5 g, 0.081 mol) was added,Then, 115 mL of dichloromethane was added successively,Thionyl chloride (17.6 mL, 0.24 mol) and a catalytic amount of N, N-dimethylformamide,Add the temperature to reflux and stir the reaction for 2 hours.Cooled to room temperature,Filter,Dichloromethane wash,dry,11.8 g of 6-chloromethyluracil was obtained in a yield of 90.8%.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,557-01-7, its application will become more common.

Reference:
Patent; Shandong Chuangxin Pharmaceutical Research And Development Co., Ltd.; Jiang Hong; Lv Chuantao; Ma Chonglei; Lin Hongjie; Hao Lianfeng; Liu Yongyong; Lu Jingjing; (7 pag.)CN106831607; (2017); A;,
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Pyrimidine – Wikipedia

Synthetic Route of 51953-18-5, 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 51953-18-5, name is Pyrimidin-4-ol. This compound has unique chemical properties. The synthetic route is as follows.

Method N Preparation of 5-Iodo-4(3H)-pyrimidinone The procedure of Sakamoto et. al. (Chem. Pharm. Bull. 1986, 34(7), 2719- 2724) was used to convert 4(3H)-pyrimidinone into 5-iodo-4(3H)-pyrimidinone, which was of sufficient purity for conversion to 4-chloro-5-iodopyrimidine.

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 51953-18-5, Pyrimidin-4-ol.

Reference:
Patent; ELAN PHARMACEUTICALS, INC.; WO2005/97162; (2005); A2;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

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. 51953-18-5, name is Pyrimidin-4-ol. A new synthetic method of this compound is introduced below., Recommanded Product: 51953-18-5

To a stirred solution containing 20.2 g (0. 21 mol) of pyrimidin-4 (3H)-one and 170 mL of water was added 10.9 g (0.27 mol) of sodium hydroxide, followed by 53.3 g (0.21 mol) of iodide. The reaction mixture was heated at 85C for 16h, then cooled to room temperature and filtered. The filter cake was washed with water, collected, and dried under reduced pressure to give 29.7g (64%) of the TITLE COMPOUND. H-NMR (300 MHz, DMSO-d6) No. 8. 17 (s, 1H), 8.43 (s, 1H), and 12.92 (brs, 1H) ; ESIMS : 223.1 (M+H) +

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, 51953-18-5, Pyrimidin-4-ol.

Reference:
Patent; SMITHKLINE BEECHAM CORPORATION; WO2005/16914; (2005); A1;,
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Pyrimidine – Wikipedia

Synthetic Route of 51953-18-5, Adding some certain compound to certain chemical reactions, such as: 51953-18-5, name is Pyrimidin-4-ol,molecular formula is C4H4N2O, 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 51953-18-5.

(b) 4, [5-DICHLOROPYRIMIDINE.] A solution of the pyrimidin-4-one from step (a) above (3.5 g, 26.8 mmol) in phosphorus oxychloride (50 mL) was heated under for 3 h. The reaction mixture was cooled to room temperature, the solvent was evaporated [IN VACUO] and the residue was dissolved in EtOAc (100 mL). The organic solution was washed with saturated aqueous solution of NaHC03 (50 mL) and brine [(50] mL), dried over [NA2S04,] filtered, and concentrated in vacuo. The residue was purified by silica gel column chromatography, eluting with 10% [ETOAC/HEXANE,] to give the title compound as an orange oil. MS (ESI, pos. [ION) M/Z] : 131 [(M+1).]

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. 51953-18-5, Pyrimidin-4-ol, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; AMGEN INC.; WO2004/35549; (2004); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Reference of 591-55-9, 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 591-55-9 as follows.

A mixture of tert-butyl 2-(tert-butyldimethylsilyloxy)-3-(3-(7- chloro-3-isopropyl- pyrazolo[l,5-a]pyrimidin-5-yl)-5-methoxyphenoxy)-propyl(methyl)- carbamate (600 mg, 0.97 mmol); pyrimidin-5-amine (139 mg, 1.46 mmol); Pd2(dba)3 (136 mg, 0.194 mmol); BINAP (121 mg, 0.19 mmol) and NaOt-Bu (286 mg, 2.31 mmol) in 15 mL of dioxane was heated at 100 C under N2 for 14h. After cooling down to room temperature, water (30 mL) was added and the mixture was extracted with EtOAc (30 mL X 3). The organic phase was concentrated and the residue was purified by preparative TLC on silica gel developed with DCM/MeOH = 20: 1 to afford 2-(tert-butyldimethylsilyloxy)-3-(3-(l- isopropyl-4-(pyrimidin-5-ylamino)- lH- pyrazolo[3,4-b]pyridin-6-yl)-5- methoxyphenoxy)propyl (methyl)carbamate (190 mg, 29 % yield) as a pale yellow solid. ESI-LCMS (m/z): 678.3 [M+l]+.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,591-55-9, its application will become more common.

Reference:
Patent; EPIZYME, INC.; CHESWORTH, Richard; MORADEI, Oscar, Miguel; SHAPIRO, Gideon; DUNCAN, Kenneth, W.; MITCHELL, Lorna, Helen; JIN, Lei; BABINE, Robert, E.; (200 pag.)WO2016/44650; (2016); A1;,
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Pyrimidine – Wikipedia

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. 3438-46-8, name is 4-Methylpyrimidine. A new synthetic method of this compound is introduced below., COA of Formula: C5H6N2

A mixture of NaNH2 (46.1 g, 1.182 mol), hexamethyldisilazane (171.5 g, 1.063 mol), and diglyme (200mL) was stirred at 0 C for 2 h. Then, a mixture of 4-methylpyrimidine (4) (40.0 g, 0.425 mol),4-fluorobenzoic acid ethyl ester (14) (71.5 g, 0.425 mol), and diglyme (200 mL) was added dropwise at0 C, and the reaction mixture was stirred at the same temperature for 2 h. Next, 2 mol/L HCl aqueoussolution (1360 mL) was added to reach pH 7~9, and the mixture was diluted with water (600 mL). Theresulting precipitate was collected by filtration, washed with water (1600 mL), and dried under reducedpressure at 40 C to provide the title compound 15 (84.16 g, 92%) as a yellow solid

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, 3438-46-8, 4-Methylpyrimidine.

Reference:
Article; Ohta, Shuji; Saito, Takahisa; Kato, Jun-Ya; Sato, Shuichiro; Hayashi, Hiroyuki; Hasumi, Koichi; Heterocycles; vol. 94; 5; (2017); p. 938 – 948;,
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Pyrimidine – Wikipedia

Adding a certain compound to certain chemical reactions, such as: 3438-46-8, 4-Methylpyrimidine, 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, SDS of cas: 3438-46-8, blongs to pyrimidines compound. SDS of cas: 3438-46-8

Procedure G: Intermediate 7 (1-7) – Pyrimidine-4-carboxaldehyde.; [0091] To a solution of 1.0 g (10 mmol, 1.0 eq.) of 4-methylpyrimidine in 10 mL of />-dioxane was added 1.2 g (10 mmol, 1.0 eq.) of selenium dioxide. The resulting mixture was heated at 100 0C for 5 h and then cooled to room temperature. After adding an additional 0.25 g (2.3 mmol, 0.23 eq.) of selenium dioxide, the reaction mixture was heated at 100 0C for a further 1 h. The mixture was cooled to room temperature and filtered through Celite. The Celite cake was washed with 200 mL of ethyl acetate and the filtrate was concentrated in vacuo. The resulting dark brown oil was suspended in 200 mL of methylene chloride and filtered. The solvent was removed in vacuo to afford 0.3 g (2.8 mmol, 28%) of pyrimidine-4-carboxaldehyde (1-7) as dark brown oil.

The synthetic route of 3438-46-8 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; PHARMACOPEIA, INC.; WO2007/104053; (2007); A2;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

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.591-55-9, name is 5-Aminopyrimidine, molecular formula is C4H5N3, molecular weight is 95.1, as common compound, the synthetic route is as follows.Computed Properties of C4H5N3

General procedure: A solution of Pd(OAc)2 and BINAP in dry toluene was warmed at 45 C for 5 min. The leaving group-containing purine was then added under N2 bubbling; the mixture was kept at 45 C for 10 min. and KOtBu was added. After 10 min, the appropriate nucleophile was added. The mixture was heated at 100 C under N2 until reaction completion (3 h to 2 days depending upon the nucleophile used). After cooling to room temperature,the mixture was filtered through Celite, and concentrated. The residue was dissolved in CH2Cl2 (75 mL) and washed (1 × 10 mL) with water and brine (2 × 10 mL). The organic layer was dried and concentrated under vacuum. The residue was purified by chromatography on silica gel using various amounts of EtOAc/cyclohexane/ethanol as eluants.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,591-55-9, 5-Aminopyrimidine, and friends who are interested can also refer to it.

Reference:
Article; Houz, Sandrine; Hoang, Nha-Thu; Lozach, Olivier; Le Bras, Jacques; Meijer, Laurent; Galons, Herv; Demange, Luc; Molecules; vol. 19; 9; (2014); p. 15237 – 15257;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Adding a certain compound to certain chemical reactions, such as: 591-55-9, 5-Aminopyrimidine, 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, 591-55-9, blongs to pyrimidines compound. Recommanded Product: 591-55-9

A suspension of 5-bromo-2-methylpyrimidine-4-carboxylic acid methyl ester (89.1 mg, 386 muiotaetaomicron,), 5-aminopyrimidine (55.0 mg, 578 muiotaetaomicron) and potassium phosphate tribasic (115 mg, 540 muiotaetaomicron) in toluene (3 mL) was evacuated and flushed with argon. 4,5-Bis(diphenylphosphino)-9,9- dimethylxanthene (Xantphos; 73.6 mg, 127 muiotaetaomicron) and tris(dibenzylideneacetone)-dipalladium(0) chloroform adduct (39.9 mg, 38.6 muiotaetaomicron) were added and the reaction mixture was stirred at 120C for 16 h. The reaction mixture was poured into ethyl acetate (50 mL) and extracted with water. The organic phase was washed brine and the aqueous layers were back-extracted with ethyl acetate. The organic layers were dried and the solvent was removed. The product was obtained after silica gel chromatography using a heptane/ethyl acetate gradient as light yellow solid (55 mg, 58 %).MS: M = 246.2 (M+H)+

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,591-55-9, its application will become more common.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; BLEICHER, Konrad; FLOHR, Alexander; GROEBKE ZBINDEN, Katrin; GRUBER, Felix; KOERNER, Matthias; KUHN, Bernd; PETERS, Jens-Uwe; RODRIGUEZ SARMIENTO, Rosa Maria; WO2011/154327; (2011); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia