Pyrimidines

Synthetic Route of 4316-97-6, Adding some certain compound to certain chemical reactions, such as: 4316-97-6, name is 4,6-Dichloro-5-methylpyrimidine,molecular formula is C5H4Cl2N2, 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 4316-97-6.

A 20 ml. Biotage microwave tube was purged with nitrogen and charged with 4,6-dichloro-5-methylpyrimidine (0.600 g, 2.98 mmol) and te/t-butyl 4-hydroxypiperidine- 1-carboxylate (534 mg, 3.28 mmol). 1 ,4-Dioxane (14.9 ml.) was added, and the mixture was heated to 100 degrees Celsius. To the mixture was added sodium bis(trimethylsilyl)amide (3.58 ml_, 3.58 mmol, 1.0 M in tetrahydrofuran) drop-wise over 10 minutes. The mixture was stirred for 60 minutes, and then at room temperature for 12 hours. The reaction was quenched with water, and the aqueous layer was extracted three times with ethyl acetate. The combined organic extracts were dried over sodium sulfate, filtered, and the filtrate was concentrated in vacuo. The crude material was purified via silica gel chromatography (40 g SiO2 column, 0-50 % ethyl acetate in heptane gradient) to afford the title compound (842 mg, 86 %).

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. 4316-97-6, 4,6-Dichloro-5-methylpyrimidine, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; PFIZER INC.; DAROUT, Etzer; DENINNO, Michael, Paul; FUTATSUGI, Kentaro; GUIMARAES, Cristiano, Ruch, Werneck; LEFKER, Bruce, Allen; MASCITTI, Vincent; MCCLURE, Kim, Francis; MUNCHHOF, Michael, John; ROBINSON, Ralph, Pelton, Jr.; WO2010/128414; (2010); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Related Products of 5305-45-3, 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 5305-45-3 as follows.

The white solid, 4,6-dichloro-5-pyrimidinecarbonitrile (5.82 g, 33.5 mmol) was dissolved in THF (66.9 mL) in a 500 mL of round-bottom flask and ammonia gas (0.570 g, 33.5 mmol) was bubbled through for 3 min every 10 min for 50 min with stirring. A white precipitate (ammonium chloride) was formed. The precipitate was filtered and washed with THF (100 mL). To the filtrate was added silica gel and concentrated under reduced pressure. The mixture was purified by column chromatography on a 120 g of Redi-Sep column using 0 to 100% gradient of EtOAc in hexane over 27 min and then 100% isocratic of EtOAc in hexane for 20 min as eluent to give 4-amino-6-chloropyrimidine-5-carbonitrile as an off-white solid. The off-white solid was suspended in EtOAc-hexane (1:1, 20 mL), filtered, washed with EtOAc-hexane (1:1, 30 mL), and dried to give 4-amino-6-chloro-5-pyrimidinecarbonitrile (B) as a white solid: 1H NMR (500 MHz, DMSO-d6) delta ppm 7.91-8.77 (3H, m); LC-MS (ESI) m/z 154.9 [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,5305-45-3, its application will become more common.

Reference:
Patent; AMGEN INC.; US2011/245257; (2011); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Related Products of 90905-32-1, 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. 90905-32-1, name is 2-Methoxypyrimidine-5-carbaldehyde, molecular formula is C6H6N2O2, 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.

2-Benzyloxycarbonylamino-3-(2-methoxy-pyrimidin-5-yl)-acrylic acid methyl ester To a suspension of potassium t-butoxide (1.23 g) in methylene chloride (70 mL, -30 C.) was added a solution of N-benzyloxycarbonyl-alpha-phosphonoglycine trimethyl ester (3.63 g) in methylene chloride (15 mL). The resulting solution was stirred 5 min and treated with the 2-methoxy-pyrimidine-5-carbaldehyde (1.0 g) in methylene chloride (15 mL). After stirring for 1.5 h, the reaction was warmed to 0 C. and stirred 1 h. The reaction was quickly poured into a sep funnel containing ethyl acetate and water. Brine was added to aid in separation of the layers. The aqueous was extracted with ethyl acetate (3*) which were in turn washed with brine, dried over magnesium sulfate, and concentrated. The crude product was recrystallized from hot methanol to give 1.4 g of pure material. Mass spec.: 344.10 (MH)+.

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 90905-32-1, 2-Methoxypyrimidine-5-carbaldehyde.

Reference:
Patent; Chaturvedula, Prasad V.; Chen, Ling; Civiello, Rita; Conway, Charles Mark; Degnan, Andrew P.; Dubowchik, Gene M.; Han, Xiaojun; J. Jiang, Xiang Jun; Karageorge, George N.; Luo, Guanglin; Macor, John E.; Poindexter, Graham; Tora, George; Vig, Shikha; US2004/204397; (2004); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Application of 934524-10-4, 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.934524-10-4, name is 2,4-Dichloro-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine, molecular formula is C13H9Cl2N3O2S, molecular weight is 342.2, as common compound, the synthetic route is as follows.

To a solution of 8 (0.80 g, 4.26 mmol), 4-methylthiophene-2-boronic acid (0.60 g, 4.26 mmol) and Pd(PPh3)4 (0.49 g, 0.43 mmol) in DMF was added Na2CO3 (2.0 M, 3.6 mL). The reaction mixture was heated 1 h at 120 0C and then cooled to room temperature. The resulting mixture was filtered through a pad of silica gel. The filtrate was concentrated and purified by silica gel chromatography (hexanes/EtOAc 100:0 to 70:30 gradient) to afford the title compound as a yellow solid (0.58 g, 55%). [0138] 1H NMR (500 MHz, DMSO-d6): delta 2.29 (s, 3H), 2.37 (s, 3H), 7.42 (d, J = 4.1 Hz, IH), 7.49 (d, J = 8.3 Hz, 2H), 7.55 (s, IH), 8.03 (d, J= 8.4 Hz, 2H), 8.07 (s, IH), 8.09 (d, J — 4.1 Hz, 2H) MS (ES+): m/z 404 (M+H)+

The chemical industry reduces the impact on the environment during synthesis 934524-10-4, I believe this compound will play a more active role in future production and life.

Reference:
Patent; TARGEGEN INC.; WO2009/49028; (2009); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Electric Literature of 3438-46-8 ,Some common heterocyclic compound, 3438-46-8, molecular formula is C5H6N2, 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 RBF, dry THF (3 mL) was added followed by DIA (0.158 mL,0.397 mL, 2.78 mmol, 4.2 equiv.). This solution was cooled to 78C and treated with n-BuLi (1.669 mL, 2.72 mmol, 4.1 equiv., 1.6 Min hexane) and stirred for 10 min. To this solution, 2-methylpyridine(0.262 mL, 247 mg, 2.65 mmol, 4 equiv.) was added dropwise.After 30 min, a solution of methyl 2-hydroxy-4-(methoxymethoxy)-6-methylbenzoate (13, 150 mg, 0.663 mmol) was addeddropwise to the pyridine solution. The yellow solution was kept at78 C and allowed to warm to rt over 2 h. The solvent wasremoved under vacuum, and dichloromethane (10 mL) was addedand washed with water (5 mL). The organic layer was dried overMgSO4 and concentrated. The residue was purified on silica (2%MeOH: DCM) to give the MOM-ether as a yellow solid.

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. 3438-46-8, 4-Methylpyrimidine, other downstream synthetic routes, hurry up and to see.

Reference:
Article; Xu, Qian; Kulkarni, Amol A.; Sajith, Ayyiliath M.; Hussein, Dilbi; Brown, David; Guener, Osman F.; Reddy, M. Damoder; Watkins, E. Blake; Lassegue, Bernard; Griendling, Kathy K.; Bowen, J. Phillip; Bioorganic and Medicinal Chemistry; vol. 26; 5; (2018); p. 989 – 998;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Electric Literature of 954220-98-5 , The common heterocyclic compound, 954220-98-5, name is 2,4-Dichloro-5-fluoro-6-methylpyrimidine, molecular formula is C5H3Cl2FN2, 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.

Compound 1b (0.130 g, 0.718 mmol), compound Int-1 (0.204 g, 0.718 mmol)And DIPEA (0.401 g, 2.730 mmol) were sequentially added to tetrahydrofuran (30 mL)And absolute ethanol (2 mL), heated to reflux and stirred for 12 h. Quench with water,Extract twice with ethyl acetate (30 mL), combine the ethyl acetate layers,It was washed with saturated brine (30 mL), dried over anhydrous sodium sulfate, and concentrated to dryness under reduced pressure.Silica gel column chromatography (PE / EA = 20/1 to 10/1) was purified to obtain 0.115 g of pale yellow oil,That is, compound 1c.

The synthetic route of 954220-98-5 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Yinxingshu Pharmaceutical (Suzhou) Co., Ltd.; Chen Li; Shao Qing; Gan Libin; (22 pag.)CN110590768; (2019); A;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 123148-78-7, Name is 4-Chloro-5-iodo-7H-pyrrolo[2,3-d]pyrimidine, SMILES is ClC1=NC=NC2=C1C(=C[NH]2)I, in an article , author is Fang, Hui-Lin, once mentioned of 123148-78-7, Name: 4-Chloro-5-iodo-7H-pyrrolo[2,3-d]pyrimidine.

Domino beta-C-H Functionalization and [3+2] Cycloaddition for Efficient Synthesis of Diverse Spiro and Polycyclic Compounds

The acetic acid catalyzed three-component reaction of pyrrolidine, aromatic aldehydes and 4-arylidene-5-methyl-2-phenylpyrazol-3-one in refluxing toluene gave functionalized 7 ‘-(E)-benzylidenespiro[pyrazole-4,1 ‘-pyrrolizines] in good yields and with high diastereoselectivity. The similar reaction with 2-arylidene-N,N’-dimethylbarbiturates resulted in mixture of Z/E-isomers of 7 ‘- arylidenespiro[pyrimidine-5,1 ‘-pyrrolizines] in good yields. However, the three-component with N-phenylmaleimides and sequential oxidation with DDQ reaction gave 8-(E)-arylidenedihydropyrrolo[3,4-a]pyrrolizines in satisfactory yields. The reaction mechanism included sequential beta-C-H functionalization of pyrrolidine, generation of conjugated azomethine ylides, and sequential [3+2] cycloaddition with active alkenes.

Interested yet? Read on for other articles about 123148-78-7, you can contact me at any time and look forward to more communication. Name: 4-Chloro-5-iodo-7H-pyrrolo[2,3-d]pyrimidine.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 799557-86-1, Name is 5-Bromo-2-(trifluoromethyl)pyrimidine, formurla is C5H2BrF3N2. In a document, author is Yin, Jiechen, introducing its new discovery. Quality Control of 5-Bromo-2-(trifluoromethyl)pyrimidine.

Non-targeted metabolomic profiling of atrazine in Caenorhabditis elegans using UHPLC-QE Orbitrap/MS

The widespread use of the herbicides Atrazine (ATR) has been raised attention due to its ubiquitous occurrence in the environment. As an endocrine disruptor, ATR causes reproductive, immune, nervous system toxicity in biota. In this study, we aimed to investigate metabolic profile characteristics and potential metabolic biomarker that reflects specific damage in toxic effect after ATR exposure. Hence, a metabolomics study was performed to determine the significantly affected metabolites and the reproduction and locomotion of C. elegans were investigated. Mediation analysis was used to evaluate the mediating effect of metabolites on association between ATR exposure and toxic effect. ATR (>= 0.04 mg/L) caused the significant dose dependent reduction of brood size and locomotion behavior, however, the body length and width were significantly decreased only in 40 mg/L group. These results suggesting that brood size, head thrashes and body bends are more sensitive indictor to assessment ATR toxicity in C. elegans. Meanwhile, metabolomics analysis revealed that ATR exposure can induce metabolic profiles significant alterations in C. elegans. We found that 9 metabolites significantly increased and 18 metabolites significantly decreased, such as phosphatidylcholine, GMP, CDP-choline, neopterin etc. Those alteration of metabolites were mainly involved in the pathways: glycerophospholipid metabolism, glycolysis/gluconeogenesis, folate biosynthesis, glycine, serine and threoninemetabolism, pyrimidine and purine metabolism. Overall, these changes are signs of possible oxidative stress and ATP synthesis disruption modification. Mediation analysis showed a significant indirect effect of ATR exposure on brood size, via 7,8-dihydroneopterin 2′,3′-cyclic-p, and phosphatidylcholine might mediate association between ATR exposure and body bends, suggesting that 7,8-dihydroneopterin 2′,3′-cyclic-p and phosphatidylcholine might be potentially specificity marker for brood size and body bend respectively. This preliminary analysis investigates metabolic characteristics in C. elegans after ATR exposure, helping to understand the pathways involved in the response to ATR exposure and provide potential biomarkers for the safety evaluation of ATR.

If you are hungry for even more, make sure to check my other article about 799557-86-1, Quality Control of 5-Bromo-2-(trifluoromethyl)pyrimidine.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 4270-27-3, Name is 6-Chloropyrimidine-2,4(1H,3H)-dione, formurla is C4H3ClN2O2. In a document, author is Tepper, Odelia, introducing its new discovery. Category: pyrimidines.

Cyclopentane FIT-PNAs: bright RNA sensors

Cyclopentane modified FIT-PNA (cpFIT-PNA) probes are reported as highly emissive RNA sensors with the highest reported brightness for FIT-PNAs. Compared to FIT-PNAs, cpFIT-PNAs have improved mismatch discrimination for several pyrimidine-pyrimidine single nucleotide variants (SNVs).

If you are hungry for even more, make sure to check my other article about 4270-27-3, Category: pyrimidines.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

Related Products of 151266-23-8, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 151266-23-8, Name is 3-Iodo-1H-pyrazolo[3,4-d]pyrimidin-4-amine, SMILES is NC1=C2C(NN=C2I)=NC=N1, belongs to pyrimidines compound. In a article, author is Ghosh, Kalyan, introduce new discover of the category.

Chemical-informatics approach to COVID-19 drug discovery: Exploration of important fragments and data mining based prediction of some hits from natural origins as main protease (Mpro) inhibitors

As the world struggles against current global pandemic of novel coronavirus disease (COVID-19), it is challenging to trigger drug discovery efforts to search broad-spectrum antiviral agents. Thus, there is a need of strong and sustainable global collaborative works especially in terms of new and existing data analysis and sharing which will join the dots of knowledge gap. Our present chemical-informatics based data analysis approach is an attempt of application of previous activity data of SARS-CoV main protease (Mpro) inhibitors to accelerate the search of present SARS-CoV-2 Mpro inhibitors. The study design was composed of three major aspects: (1) classification QSAR based data mining of diverse SARS-CoV Mpro inhibitors, (2) identification of favourable and/or unfavourable molecular features/fingerprints/substructures regulating the Mpro inhibitory properties, (3) data mining based prediction to validate recently reported virtual hits from natural origin against SARS-CoV-2 Mpro enzyme. Our Structural and physico-chemical interpretation (SPCI) analysis suggested that heterocyclic nucleus like diazole, furan and pyridine have clear positive contribution while, thiophen, thiazole and pyrimidine may exhibit negative contribution to the SARS-CoV Mpro inhibition. Several Monte Carlo optimization based QSAR models were developed and the best model was used for screening of some natural product hits from recent publications. The resulted active molecules were analysed further from the aspects of fragment analysis. This approach set a stage for fragment exploration and QSAR based screening of active molecules against putative SARSCoV-2 Mpro enzyme. We believe the future in vitro and in vivo studies would provide more perspectives for anti-SARS-CoV-2 agents. (c) 2020 Elsevier B.V. All rights reserved.

Related Products of 151266-23-8, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 151266-23-8 is helpful to your research.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia