Tag: M.W:100-200

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. 873-83-6, name is 6-Aminopyrimidine-2,4(1H,3H)-dione. This compound has unique chemical properties. The synthetic route is as follows. Application In Synthesis of 6-Aminopyrimidine-2,4(1H,3H)-dione

6-Aminouracil (5) (5.18 g, 40.7 mmol) was suspended in HM DS (25 mL) and H2S04 (0.1 m L) was added. The mixture was heated at reflux for 3 h then concentrated in vacuo. The residue was dissolved in DM F (30 mL), Mel (8.5 mL, 136.5 mmol) was added, and stirring was continued for 72 h at room temperature. The reaction was cooled to 0 C and NaHC03 was carefully added. The mixture was stirred at 0 C until no more bubbling was observed. The precipitate was filtered, washed with MeOH and H20 and dried to give the title compound 6 (4.49 g, 78%) as a yellow solid which was used without further purification.Rf 0.23 (EtOAc-MeOH-N H4OH, 7:2.7:0.3);H NMR (400 MHz, DMSO-d6) delta 10.36 (1H, s, Ntf), 6.16 (2H, s, Ntf2), 4.56 (1H, s, tf-5); 3.04 (3H, s, NCtf3); 13C NMR (100 M Hz, DMSO-d6) delta 163.3 (C-4), 153.5 (C-6), 151.1 (C-2), 74.0 (C-5), 25.9 (NCH3);MP Lit: 327 C19, found: 320-323 C;

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, 873-83-6, 6-Aminopyrimidine-2,4(1H,3H)-dione.

Reference:
Patent; COMVITA LIMITED; BRIMBLE, Margaret Anne; SCHLOTHAUER, Ralf Christian; PRIJIC, Gordana; STEPHENS, Jonathan; DANIELS, Benjamin; (57 pag.)WO2017/99612; (2017); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Electric Literature of 4595-61-3, 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. 4595-61-3, name is Pyrimidine-5-carboxylic acid, molecular formula is C5H4N2O2, 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.

Synthesis of 5-{3-[2-(4-bromophenyl)-3-methylbutan-2-yl]-1,2,4-oxadiazol-5-yl}pyrimidine To a solution of pyrimidine-5-carboxylic acid (200 mg, 0.70 mmol) in pyridine (1.0 mL) is added thionyl chloride (61 muL, 0.84 mmol). The mixture is stirred at room temperature for 15 minutes before I-14 (91 mg, 0.74 mmol) is added. The resulting mixture is heated at 110° C. for 18 h then concentrated in vacuo. The residue is partitioned between EtOAc and saturated aqueous NaHCO3, washed with brine, dried with Na2SO4, filtered, and concentrated in vacuo to give the title compound (236 mg); m/z 373.0, 375.0 [M, M+2H]

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 4595-61-3, Pyrimidine-5-carboxylic acid.

Reference:
Patent; Boehringer Ingelheim International GmbH; BYLOCK, Lars Anders; US2013/195879; (2013); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Synthetic Route of 89793-12-4, 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. 89793-12-4, name is Ethyl 2-chloropyrimidine-5-carboxylate, molecular formula is C7H7ClN2O2, 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.

In step 4 manufactured benzyl 4-amino-4-phenylpiperidine-1-carboxylate hydrochloride (3.000 g, 8.649 mmol), ethyl 2-chloropyrimidine-5-carboxylate (1.614 g, 8.649 mmol) and N,N-diisopropylethylamine (3.465 mL, 19.893 mmol) was dissolved in 1,4-dioxane (30 mL) at room temperature and stirred at 110 °C for 17 hours, and then the reaction was terminated by lowering the temperature to room temperature. The solvent was removed from the reaction mixture under reduced pressure and the concentrate was purified by column chromatography (SiO2, 40 g cartridge; ethyl acetate / hexane = 5percent to 40percent) and concentrated to give the title compound (1.900 g, 51.5percent was obtained in the form of a yellow solid.

According to the analysis of related databases, 89793-12-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Chong Kun Dang Co., Ltd.; Kim, Yoon Tae; Lee, Chang Sik; Oh, Jung Taek; Song, Hey Sung; Choe, Jin; Lee, Jae Young; (210 pag.)KR2017/43091; (2017); A;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

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 936643-80-0, name is 2-(Chloromethyl)pyrimidine hydrochloride. This compound has unique chemical properties. The synthetic route is as follows. Product Details of 936643-80-0

To a stirred solution of 38-D (75 mg, 0.232 mmol) in DMF (6 mL) was added K2CO3 (128 mg, 0.928 mmol), followed by 38-E (57 mg, 0.348 mmol). The resulting mixture was stirred at 70 C. overnight. Diluted the reaction mixture with EtOAc and washed with H2O. The organic layer was dried over Na2SO4 and evaporated in vacuo. The residue was then purified by column chromatography (EtOAc:hexanes=2:3) to afford Compound II-56.

With the rapid development of chemical substances, we look forward to future research findings about 936643-80-0.

Reference:
Patent; Gilead Sciences, Inc.; US2012/289493; (2012); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Application of 56181-39-6, Adding some certain compound to certain chemical reactions, such as: 56181-39-6, name is 5-Bromo-4-chloropyrimidine,molecular formula is C4H2BrClN2, 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 56181-39-6.

EXAMPLE 13: 5-bromo-N-(l-methylpiperidin-4-yl)pyridine-4-amine17To a stirred solution of 5-bromo-4-chloropyrimidine (300mg, 1.562mmol) in DMF, DIPEA (400mg, 3.124mmol) was added followed by l-methylpiperidine-4-amine (0.193ml, 1.562mmol) and the reaction mixture was heated at 80 C overnight. TLC showed absence SM, and then reaction mixture was concentrated. The crude product was purified by flash column chromatography over 230-400 mesh silica gel and using a mixture of 30% EtO Ac/petroleum ether to afford the desired product 17, 180mg (Yield: 40 %) as yellow solid. The product was confirmed by 1FiNMR and MS spectrum analysis. 1H NMR (400 MHz, CDC13) delta: 8.4 (s, 1H), 8.35 (s, 1H), 6.81 (d, 1H), 4.95 (m, 1H), 2.78 (d, 2H), 2.17 (s, 3H), 1.95 (t, 2H), 1.6-1.8 (m, 4H); MS- 270 (M+l).

According to the analysis of related databases, 56181-39-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; ARRIEN PHARMAEUTICALS LLC; VANKAYALAPATI, Hariprasad; APPALANENI, Rajendra, P.; REDDY, Y., Venkata Krishna; WO2012/135631; (2012); 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. 878742-59-7, name is 2-(Trifluoromethyl)pyrimidine-4-carboxylic acid, molecular formula is C6H3F3N2O2, 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-(Trifluoromethyl)pyrimidine-4-carboxylic acid

To a solution of {1-[cis-3-fluoropiperidin-4-yl]-3-[4-(7-{[2-(trimethylsilyl)ethoxy]methyl}-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]azetidin-3-yl}acetonitrile (200 mg, 0.4 mmol) and 2-(trifluoromethyl)pyrimidine-4-carboxylic acid (83 mg, 0.43 mmol) in DMF (10 mL) were added benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (5.20E2 mg, 1.17 mmol) and triethylamine (0.14 mL, 0.98 mmol). The mixture was stirred at room temperature overnight and purified with prep-LCMS to give 100 mg (36% yield) of the desired compound as a white solid.

With the rapid development of chemical substances, we look forward to future research findings about 878742-59-7.

Reference:
Patent; Huang, Taisheng; Xue, Chu-Biao; Wang, Anlai; Kong, Ling Quan; Ye, Hai Fen; Yao, Wenqing; Rodgers, James D.; Shepard, Stacey; Wang, Haisheng; Shao, Lixin; Li, Hui-Yin; Li, Qun; US2011/224190; (2011); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Adding a certain compound to certain chemical reactions, such as: 1004-17-7, 2-Methylpyrimidine-4-carbaldehyde, 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, 1004-17-7, blongs to pyrimidines compound. Product Details of 1004-17-7

Step A 3-(2-Methyl-pyrimidin-5-yl)-propenal (2-2) To a solution of 4-formyl-2-methylpyrimidine [2-1, 2 g, 16.4 mmol; for preparation, see Smith, S. Q. et al, J. Heterocyclic Chem. 28: 1281 (1991)] in methylene chloride (15 mL) was added (formylmethylene)triphenylphosphorane (5.98g, 19.6 mmol). The solution was heated at reflux for 4 h, cooled to room temperature, and solvents evaporated. The residue was chromatographed on silica gel (30% EtOAc/chloroform to 50 EtOAc/50 chloroform/5 methanol) to give the aldehyde 2-2 as a yellow solid. TLC Rf=0.39 (70 chloroform/25 EtOAc/5 MeOH). 1H NMR (400 MHz, CDCl3) delta 9.74 (d, 1H, J=7 Hz), 8.83 (s, 2H), 7.41 (d, 1H, J=7 Hz), 6.81 (dd, 1H, S=6 Hz, 15 Hz), 2.77 (s, 3H).

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1004-17-7, its application will become more common.

Reference:
Patent; Merck & Co., Inc.; US6410526; (2002); B1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Related Products of 5334-35-0, 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 5334-35-0, name is 6-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one. This compound has unique chemical properties. The synthetic route is as follows.

Example 110 1 -methyl-6-(4-methylsulfonyl- 1 -piperidyl)-5H-pyrazolo[3 4-d]pyrimidin-4-one (1-141) The title compound was prepared by condensation (DIPEA/EtOH) of 4-methylsulfonyl- piperidine (CASRN 290328-55-1) and Intermediate A: 1H-NMR (400MHz, DMSO-i ) delta ppm 10.97 (s, 1H), 7.77 (s, 1H), 4.49 (d, J = 16.0Hz, 2H), 3.73 (s, 3H), 3.43-3.35 (m, 1H), 3.03-2.95 (m, 5H), 2.09 (d, J = 11.2Hz, 2H), 1.65-1.55 (m, 2H).

According to the analysis of related databases, 5334-35-0, the application of this compound in the production field has become more and more popular.

Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; FENG, Jianwen; HAYNES, Nancy-Ellen; HERMANN, Johannes Cornelius; KIM, Kyungjin; LIU, Jin-Jun; SCOTT, Nathan Robert; YI, Lin; ZAK, Mark; ZHAO, Guiling; WO2013/182546; (2013); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Electric Literature of 23945-44-0 ,Some common heterocyclic compound, 23945-44-0, molecular formula is C5H4N2O4, 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.

To 10.0 g (64.06 mmol) of uracil-5-carboxylic acid (Aldrich Chemical Company) partially dissolved in 20 mL of DMF are added, under cold conditions, 59.7 mL (0.64 mol) of phosphorus oxychloride and 10.3 mL (64.7 mmol) of N,N-diethylaniline, and the mixture is then heated at 90° C. for 2 hours 40 minutes.After cooling to room temperature and evaporating off half the excess POCl3, the medium is poured onto ice and then extracted with ether.The ether phases are combined, dried over sodium sulfate, filtered and concentrated under vacuum. 8.1 g (41.97 mmol) of 2,4-dichloro-5-pyrimidinecarboxylic acid are obtained in a yield of 65percent.

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. 23945-44-0, 2,4-Dihydroxypyrimidine-5-carboxylic acid, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; SANOFI; US2012/277220; (2012); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Reference of 5767-35-1, 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. 5767-35-1, name is 4-Chloro-6-hydrazinopyrimidine. A new synthetic method of this compound is introduced below.

General procedure: To the suspension of appropriate 1-(6 -chloropyrimidin chloropyrimidin-4-yl) (3) (3.0 mmol) in EtOH (15 mL) was added dropwise with vigorous stirring an aldeldehyde (3.6 mmol, 1.2 equiv) at rt over 0.5-1 h. The progression of the reaction was monitored by TLC. After completion of the reaction, solvent was removed under reduced pressure to afford the crude product. Crystallization from an appropriate solvent or purification by column chromatography on silica gel furnished the pure hydrazones 4.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,5767-35-1, 4-Chloro-6-hydrazinopyrimidine, and friends who are interested can also refer to it.

Reference:
Article; Tang, Caifei; Li, Zhiming; Wang, Quanrui; Beilstein Journal of Organic Chemistry; vol. 9; (2013); p. 2629 – 2634;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia