Category: pyrimidines

Related Products of 1032452-86-0, 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 1032452-86-0, name is 3-(2-Chloropyrimidin-4-yl)-1-methyl-1H-indole. This compound has unique chemical properties. The synthetic route is as follows.

4-Methylbenzenesulfonic acid hydrate (8.7 g) was added in one portion to 3-(2-chloropyrimidin-4-yl)-1-methylthdole (9.3 g) and 4-fluoro-2-methoxy-5-nitroaniline (7.1 g) in n-butanol (200 mL). The resulting mixture was stirred at reflux for 1 h. The mixture was cooled to room temperature. The precipitate was collected by filtration, washed with n-butanol (50 mL), and dried under vacuum to afford N-(4-fluoro-2-methoxy-5-nitrophenyl)-4-(1-methylindol-3-yl)pyrimidin-2-amine as a yellow solid (Compound 5, 15.5 g).

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 1032452-86-0, 3-(2-Chloropyrimidin-4-yl)-1-methyl-1H-indole.

Reference:
Patent; X-Cutag Therapeutics, Inc.; CHENG, Changfu; WEN, Shuhao; LI, Hui Joyce; (30 pag.)US2019/169171; (2019); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Adding a certain compound to certain chemical reactions, such as: 19178-25-7, Pyrido[3,4-d]pyrimidin-4(3H)-one, 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, 19178-25-7, blongs to pyrimidines compound. SDS of cas: 19178-25-7

A suspension of pyrido[3,4-d]pyrimidin-4-ol (33)(1.47 g, 10 mmol) in thionylchloride (30 ml) and dimethylformamide (50 mul, cat.) was heated to reflx (90 C.) for 1 hour. The mixture was then cooled and concentrated in vacuo and then diluted with CH2Cl2 (50 ml) which caused a suspension to form. The solid was removed by filtration, washed with cold CH2Cl2 (10 ml) to give the title compound (1.65 g, 99.4%) in sufficiently pure form to be used without any further purification. m/z (LC-MS, ESP): 166 [M+H]+, R/T=2.82 mins.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,19178-25-7, its application will become more common.

Reference:
Patent; Kudos Pharmaceuticals Ltd; US2006/199804; (2006); A1;,
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.504-17-6, name is 4,6-Dihydroxy-2-mercaptopyrimidine, molecular formula is C4H4N2O2S, molecular weight is 144.1518, as common compound, the synthetic route is as follows.COA of Formula: C4H4N2O2S

General procedure: A mixture of an isatin (1mmol), molononitrile (1mmol), CH activatedacid (1mmol), and [C4(DABCO)2]·2OH(2mol%) inwater (3mL)was stirred at 80 C. The reaction progress was monitored by TLC [eluent:n-hexane:EtOAc (9:2)] (It is important to that by beginning of thereaction the products were precipitated in the reaction medium).After completion of the reaction, the mixture was cooled to room temperature and the solid product was filtered, washed with cold distilledwater (2 mL) to obtain essentially pure products. The solid productswere recrystallized from ethanol if necessary.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,504-17-6, 4,6-Dihydroxy-2-mercaptopyrimidine, and friends who are interested can also refer to it.

Reference:
Article; Goli-Jolodar, Omid; Shirini, Farhad; Seddighi, Mohadeseh; Journal of Molecular Liquids; vol. 224; (2016); p. 1092 – 1101;,
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Pyrimidine – Wikipedia

Reference of 939986-65-9, 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. 939986-65-9, name is 6-Chloropyrimidine-4-carbonitrile. A new synthetic method of this compound is introduced below.

A mixture of 6-chloropyrimidine-4-carbonitrile E-1 (100 mg, 0.717 mmol), 3- methylaminomethyl benzoic acid methyl ester hydrochloride (155 mg, 0.7 17 mmol), DIEA (277 mg, 2.15 mmol), and DMF (1 mL), was stirred at RT for 18 h. The mixture was concentrated under reduced pressure and the residue partitioned between water (50 mL) and EtOAc (10 mL). The organic layer was separated and the aqueous layer was re-extracted with EtOAc (2 x 10 ml). The combined organic layers were dried (Na2SO4), filtered, and then concentrated under reduced pressure. The crude residue was purified (via silica gel; eluting with 0-50% EtOAc in hexanes) to afford compound E-2 as a white solid (143 mg, 7 1%). LCMS Mass: 283.0 (M+1).

At the same time, in my other blogs, there are other synthetic methods of this type of compound,939986-65-9, 6-Chloropyrimidine-4-carbonitrile, and friends who are interested can also refer to it.

Reference:
Patent; PHARMAKEA, INC.; ROWBOTTOM, Martin, W.; HUTCHINSON, John, Howard; (185 pag.)WO2017/3862; (2017); A1;,
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Pyrimidine – Wikipedia

Related Products of 105742-66-3, 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.105742-66-3, name is 4,5-Dichloro-2,6-dimethylpyrimidine, molecular formula is C6H6Cl2N2, molecular weight is 177.03, as common compound, the synthetic route is as follows.

General procedure: Compound 5 was synthesized as described.33 Compounds 6 and 7were synthesized in our previous work.34 Compounds 4 (5 mmol), 7(5 mmol) and anhydrous potassium carbonate (5 mmol, 0.69 g) wereadded to a mixed solvent of dimethyl formamide (20 mL) and water(10 mL), and then refluxed for 2-4 h. The progress was monitored byTLC. After the reaction was complete, the reaction solution was pouredinto saturated saline and extracted with ethyl acetate (3×80 mL). Theextract was dried, filtered, and the solvent was removed under reducedpressure to give a crude product. Recrystallization from the mixedsolvent of petroleum ether and ethyl acetate gave pure target compoundsO1-17 (Scheme 2).

Statistics shows that 105742-66-3 is playing an increasingly important role. we look forward to future research findings about 4,5-Dichloro-2,6-dimethylpyrimidine.

Reference:
Article; Yan, Zhongzhong; Liu, Aiping; Ou, Yingcan; Li, Jianming; Yi; Zhang, Ning; Liu, Minhua; Huang, Lu; Ren, Jianwei; Liu, Weidong; Hu, Aixi; Bioorganic and Medicinal Chemistry; vol. 27; 15; (2019); p. 3218 – 3228;,
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Pyrimidine – Wikipedia

Adding a certain compound to certain chemical reactions, such as: 84905-80-6, 4-Chloro-5H-pyrrolo[3,2-d]pyrimidine, 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, Safety of 4-Chloro-5H-pyrrolo[3,2-d]pyrimidine, blongs to pyrimidines compound. Safety of 4-Chloro-5H-pyrrolo[3,2-d]pyrimidine

Into a 20-mL vial was placed 4-chloro-5H-pyrrolo[3,2-d]pyrimidine (250.00 mg; 1.63 mmol), and 4-phenoxyaniline (452.29 mg: 2.44 mmol) suspended in acetonitrile (3.00 ml). The reaction mixture was heated at 100 C overnight. The murky reaction mixture was allowed to cool to rt. The solid was filtered and washed with acetonitrile. The solid was dried under vacuum to afford N-(4-phenoxyphenyl)-5H-pyrrolo[3,2-d]pyrimidin-4-amine (580.00 mg, 100% yield) as a yellow solid. MS: m/z = 303 [M+H]+.

The synthetic route of 84905-80-6 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; MERCK PATENT GMBH; LIU-BUJALSKI, Lesley; NGUYEN, Ngan; QIU, Hui; JONES, Reinaldo; MOCHALKIN, Igor; CALDWELL, Richard D.; WO2015/17502; (2015); A1;,
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.171887-03-9, name is N-(2-Amino-4,6-dichloropyrimidine-5-yl)formamide, molecular formula is C5H4Cl2N4O, molecular weight is 207.02, as common compound, the synthetic route is as follows.Computed Properties of C5H4Cl2N4O

2-Amino-4,6-dichloro-5-formamidopyrimidine (0.8g; 3.8mmol) and DIPEA (1.7mL; 10.0mmol) were added to a solution of 4-amino-3-hydroxy-1-trityloxymethylphospholane 1-oxide 15 (1.0g; 2.5mmol) in n-butanol (25mL). The reaction mixture was stirred for 16h at 130C and evaporated. The residue was treated 16h at 60C with concentrated hydrochloric acid/ methanol 1/ 10 (25mL), diluted with water (100mL) and treated with Dowex H+ (10g). The resin was filtered off and washed with methanol (100mL) and water (100mL). The product was washed off of the resin with 5% aqueous ammonia (100mL), evaporated, purified by preparative HPLC (isocratically water) and freeze-dried from water to yield 0.34g (45%) of white lyofilisate. HRMS (FAB) calcdfor C10H15N5O4P (M+H)+ 300.0862, found 300.0865. IRnumax (KBr) 3403, 3322, 3200, 3161, 3113, 1736, 1689, 1633, 1610, 1572, 1539, 1484, 1408, 1390, 1324, 1218, 1152, 1073, 1054, 784, 777, 729, 639. NMR data-see Tables 2-4

At the same time, in my other blogs, there are other synthetic methods of this type of compound,171887-03-9, N-(2-Amino-4,6-dichloropyrimidine-5-yl)formamide, and friends who are interested can also refer to it.

Reference:
Article; Pav, Ond?ej; Zbornikova, Eva; Bud??insky, Milo?; Rosenberg, Ivan; Tetrahedron; vol. 69; 43; (2013); p. 9120 – 9129;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Adding a certain compound to certain chemical reactions, such as: 4316-93-2, 4,6-Dichloro-5-nitropyrimidine, 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, HPLC of Formula: C4HCl2N3O2, blongs to pyrimidines compound. HPLC of Formula: C4HCl2N3O2

Example 1 N,N-dibenzyl-6-chloro-5-nitropyrimidine-4-amine Dibenzylamine (10.2 g) in a dichloromethane (30 mL) solution was added dropwise on an ice bath to a dichloromethane (70 mL) solution of 4,6-dichloro-5-nitropyrimidine (10 g). This was followed by the addition of triethylamine (14.4 mL) and stirring for 1 hour. Water was then added to the reaction mixture and the organic layer was subsequently washed with saturated aqueous sodium chloride solution and dried over anhydrous sodium sulfate. The solvent was concentrated under reduced pressure to obtain the title compound (19.2 g) having the physical property value indicated below. TLC: Rf 0.50 (hexane:ethyl acetate=7:1).

The synthetic route of 4316-93-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Yamamoto, Shingo; Yoshizawa, Toshio; US2013/79327; (2013); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Electric Literature of 1005-38-5 , The common heterocyclic compound, 1005-38-5, name is 4-Amino-6-chloro-2-(methylthio)pyrimidine, molecular formula is C5H6ClN3S, 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.

Acetic anhydride (10.4 MI, 0. 11 MOL) was added to 6-chloro-2- (methylthio) pyrimidin-4-amine (2.5 g, 0.01 mol) and the reaction mixture was refluxed at 135 C for 5 hr. The reaction mixture was cooled to room temperature and basified to pH 7 with saturated sodium bicarbonate solution (20 ML). The mixture was partitioned between EtOAc and water, the organic layer was washed with water and brine, dried over MgS04 and concentrated to give the title compound (2.62 g). MS (ES . : 218 (MH+) for C7HGCINO3S

The synthetic route of 1005-38-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; WO2005/26149; (2005); A1;,
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Pyrimidine – Wikipedia

Adding a certain compound to certain chemical reactions, such as: 1197953-49-3, (2-((2,5-Dichloropyrimidin-4-yl)amino)phenyl)dimethylphosphine oxide, 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, Product Details of 1197953-49-3, blongs to pyrimidines compound. Product Details of 1197953-49-3

General procedure: To asolution of (2-((2-chloro-5-fluoropyrimidin-4-yl)amino)phenyl)dimethylphosphine oxide (3f) (0.1 g, 0.334 mmol) and 4-fluoro-2-methoxy-5-nitroaniline (0.124 g, 0.667 mmol) in sec-butanol(2 mL) was added potassium carbonate (0.231 g, 1.669 mmol). Thereaction mixturewas stirred at 80 C for 10 min and then Pd2 (dba)3(0.031 g, 0.033 mmol) and Xphos (0.016 g, 0.033 mmol) were addedrapidly. The reaction mixture was stirred at 100 C for 2 h. Aftercompletion of the reaction, the resulting mixture was hot-filteredthrough Celite and washed with DCM. The filtrate was concentratedunder reduced pressure and then purified by flash columnchromatography on silica gel (0-20% MeOH in DCM) to afford 4f asa yellowish solid (0.128 g, 85%).

The synthetic route of 1197953-49-3 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Jang, Jaebong; Son, Jung Beom; To, Ciric; Bahcall, Magda; Kim, So Young; Kang, Seock Yong; Mushajiang, Mierzhati; Lee, Younho; Jaenne, Pasi A.; Choi, Hwan Geun; Gray, Nathanael S.; European Journal of Medicinal Chemistry; vol. 136; (2017); p. 497 – 510;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia