Pyridine-derivatives

Reference of 936841-69-9, 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 936841-69-9, name is 4-(Trifluoromethyl)picolinonitrile. This compound has unique chemical properties. The synthetic route is as follows.

To a solution of 4-(trifluoromethyl)pyridine-2-carbonitrile (500 mg, 3.0 mmol) in 10 ml ethanol was added hydroxylammonium chloride (302 mg, 4.0 mmol) and triethylamine (382 mg, 4.0 mmol) and then the reaction mixture was stirred 13 h at 50 C. After cooling to RT, the solvent was evaporated and the crude was solved in dichloromethane and extracted with water. The organic phase was dried over magnesium sulfate, filtered and evaporated under vacuum to yield the title compound (432 mg, 65 % of theory, 90 % purity). The compound was used without further purification. LC-MS (method 2B): RT = 1.78 min, m/z = 206 (M+H)+

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 936841-69-9, 4-(Trifluoromethyl)picolinonitrile.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; ELLERMANN, Manuel; VALOT, Gaelle; CANCHO GRANDE, Yolanda; HAssFELD, Jorma; KINZEL, Tom; KOeBBERLING, Johannes; BEYER, Kristin; ROeHRIG, Susanne; SPERZEL, Michael; STAMPFUss, Jan; MEYER, Imke; KOeLLNBERGER, Maria; BURKHARDT, Nils; SCHLEMMER, Karl-Heinz; STEGMANN, Christian; SCHUHMACHER, Joachim; WERNER, Matthias; HEIERMANN, Joerg; HENGEVELD, Willem Jan; (764 pag.)WO2016/71216; (2016); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 898746-42-4, name is 6-Fluoro-1H-pyrrolo[2,3-b]pyridine, the common compound, a new synthetic route is introduced below. Computed Properties of C7H5FN2

Preparation 1Synthesis of 6-fluoro-l -methyl- lH-pyrrolo[2,3-b]pyridine.Jf)3 C H3 To a solution of 6-fluoro-lH-pyrrolo[2,3-b]pyridine (250 g, 1.84 mol) in dimethylformamide (2.50 L) is added potassium carbonate (507.6 g; 3.67 mol), followed by methyl iodide (171.6 mL, 2.75 mol). The reaction is stirred at room temperature overnight. The reaction mixture is poured into water (3000 mL) and extracted with Et20(3 x 1500 mL). The organic extracts are combined and washed with water (4 x 1000 mL), then brine, and dried over Na2S04. The solvent is evaporated to give a light brown oil which, on standing, gives clear colorless crystals, with a little mobile liquid on top of the crystals. The liquid is decanted off and discarded to leave the product as a crystalline solid (257.3 g, 1.71 moles). XH-NMR (400MHz, CDC13): delta 7.93 (t, 1H), 7.11 (d, 1H), 6.69 (d, 1H), 6.46 (d, 1H), 3.83 (s, 3H).

The synthetic route of 898746-42-4 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; ELI LILLY AND COMPANY; LAMAS-PETEIRA, Carlos; RICHARDS, Simon, James; SAPMAZ, Selma; WALTER, Magnus, Wilhelm; WO2012/74769; (2012); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 14916-65-5, 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 14916-65-5, name is 6-Nitropyridin-3-amine. This compound has unique chemical properties. The synthetic route is as follows.

To a so[ution of 3.50 g (11.2 mmo[) 5,10-dioxo-5H,1OH-diimidazo[1,5-a:1?,S?-d]pyrazine-1,6-dicarbony[ dich[oride (Intermediate 001) in 60 mL THF were added 3.10 g (22.4 mmo[) 6-nitropyridin-3-amine and 5.00 mL N,N-diisopropy[ethy[amine. The resu[ting mixture was stirred for 1 hour at room temperature under an argon atmosphere.

According to the analysis of related databases, 14916-65-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; BAYER PHARMA AKTIENGESELLSCHAFT; EIS, Knut; ACKERSTAFF, Jens; WAGNER, Sarah; BASTING, Daniel; GOLZ, Stefan; BENDER, Eckhard; LI, Volkhart Min-Jian; LIENAU, Philip; LIU, Ningshu; SIEGEL, Franziska; BAUSER, Marcus; SUeLZLE, Detlev; HOLTON, Simon; BAIRLEIN, Michaela; BUCHGRABER, Philipp; BALINT, Jozsef; WO2015/150449; (2015); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 1289131-55-0, 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. 1289131-55-0, name is 4-Bromo-2-(2-methoxyethoxy)pyridine, molecular formula is C8H10BrNO2, 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.

General procedure: A mixture of 4-bromo-2-ethoxypyridine (150 mg, 0.742 mmol), £>/s(pinacolato)diboron (754 mg, 2.97 mmol), PdCI2(dppf) (54.3 mg, 0.074 mmol) and potassium acetate (291 mg, 2.97 mmol) in 1 ,4- dioxane (3 ml.) was heated in a microwave at 1 10 C for 2 x 30 min. The reaction was diluted with EtOAc and filtered through a Celite column. The filtrate was evaporated to give a brown residue. This crude material was used in subsequent steps without further purification and the yield was assumed to be 100% (0.742 mmol, 185 mg).

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 1289131-55-0, 4-Bromo-2-(2-methoxyethoxy)pyridine.

Reference:
Patent; GLAXOSMITHKLINE LLC; AMANS, Dominique; BAMBOROUGH, Paul; BIT, Rino, Antonio; BROWN, John, Alexander; CAMPBELL, Matthew; LINDON, Matthew, John; SHIPLEY, Tracy, Jane; THEODOULOU, Natalie, Hope; WELLAWAY, Christopher, Roland; WESTAWAY, Susan, Marie; WO2014/78257; (2014); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 1074-98-2, 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.1074-98-2, name is 3-Methyl-4-nitropyridine 1-oxide, molecular formula is C6H6N2O3, molecular weight is 154.13, as common compound, the synthetic route is as follows.

A suspension of 3-methyl-4-nitropyridine N-oxide (2.0 g, 13 mmol) and palladium hydroxide on carbon (0.4 g) in ethanol (30 mL) was heated to 60 C. Ammonium formate (3.3 g, 52 mmol) was then added portionwise and the mixture heated at 60 C for three hours. The cool reaction mixture was filtered through Arbocel and the filtrate evaporated under reduced pressure to afford the title compound as a colourless oil, 1.81 g. LRMS (APCI+): m/z [M+H]+ 125

The chemical industry reduces the impact on the environment during synthesis 1074-98-2, I believe this compound will play a more active role in future production and life.

Reference:
Patent; PFIZER LIMITED; PFIZER INC.; WO2005/121094; (2005); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 112110-07-3, 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.112110-07-3, name is 5-(Trifluoromethyl)pyridin-3-amine, molecular formula is C6H5F3N2, molecular weight is 162.11, as common compound, the synthetic route is as follows.

General procedure: l-methyl-4-[(3-methyloxetan-3-yl)sulfamoyl]-lH-pyrrole-2-carboxylic acid (200 mg, (0182) 0.729 mmol) was dissolved in DMF (1.7 mL) and triethylamine (0.41 mL, 2.9 mmol) and HATU (360 mg, 0.95 mmol) were added. After 10 minutes 4-aminopyridine-2-carbonitrile (174 mg, 1.46 mmol) was added. The reaction mixture was stirred at room temperature for 1 hour and heated at 65C for 42 hours. The mixture was poured into water (50 mL) and the organics were extracted with ethyl acetate (3 x 40 mL). The combined organic layers were dried (Na2S04) and concentrated to dryness. The residue was purified using silica gel column chromatography (ethyl acetate in heptane from 0 to 100%) followed by prep. HPLC (Stationary phase: RP SunFire Prep C18 OBD-IotaOmicronmuiotaeta, 30 x 150mm), Mobile phase: 0.5% NH4OAc solution in water + 10% CH3CN, MeOH), resulting in compound 1 (4.6 mg). 1H NMR (400 MHz, DMSO-d6) delta ppm 1.54 (s, 3 H), 3.94 (s, 3 H), 4.14 (d, J=6.4 Hz, 2 H), 4.60 (d, J=5.9 Hz, 2 H), 7.43 (s, 1 H), 7.66 (d, J=1.3 Hz, 1 H), 7.86 – 8.12 (m, 2 H), 8.26 (d, J=2.0 Hz, 1 H), 8.60 (d, J=5.7 Hz, 1 H), 10.68 (br. s., 1 H). Method A; Rt: 1.22 min. m/z : 374.0 (M-H)- Exact mass: 375.1. Compound 2 was prepared similarly as described for compound 1, using 5-(trifluoromethyl)-3- aminopyridine instead of 4-aminopyridine-2-carbonitrile. The reaction mixture was stirred at room temperature for 1 hour and heated at 65C for 4 hours. The mixture was poured into water (50 mL), the formed precipitate was filtered and the solids were washed with water and recrystallised from methanol/ethyl acetate (10 mL, 1 : 1). The white solids were filtered, washed with methanol (2 x 3 mL) and dried overnight in vacuum oven resulting in compound 2 (74 mg) as a white solid. 1H NMR (400 MHz, DMSO-d6) delta ppm 1.55 (s, 3 H), 3.94 (s, 3 H), 4.14 (d, J=6.2 Hz, 2 H), 4.60 (d, J=5.9 Hz, 2 H), 7.41 (s, 1 H), 7.63 (s, 1 H), 8.01 (br. s., 1 H), 8.56 (s, 1 H), 8.66 (s, 1 H), 9.13 (s, 1 H), 10.55 (br. s., 1 H). Method B; Rt: 0.84 min. m/z : 417.1 (M-H)~ Exact mass: 418.1.

Statistics shows that 112110-07-3 is playing an increasingly important role. we look forward to future research findings about 5-(Trifluoromethyl)pyridin-3-amine.

Reference:
Patent; JANSSEN SCIENCES IRELAND UC; VANDYCK, Koen; HACHE, Geerwin Yvonne Paul; LAST, Stefaan Julien; ROMBOUTS, Geert; VERSCHUEREN, Wim Gaston; RABOISSON, Pierre Jean-Marie Bernard; WO2015/118057; (2015); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of 20970-75-6, Adding some certain compound to certain chemical reactions, such as: 20970-75-6, name is 2-Cyano-3-methylpyridine,molecular formula is C7H6N2, 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 20970-75-6.

General procedure: General Procedure for the Preparation of 7-Aza-5,6-dihydro-5-oxo-11H-indeno[1,2-c]isoquinolines 12-14 [0111] 3-Methylpicolonitrile (10, 3.0-4.0 g, 25.4-33.9 mmol, 1 equiv), NBS (6.78-9.04 g, 38.1-50.8 mmol, 1.5 equiv), and AIBN (0.42-0.56 g, 2.5-3.4 mmol, 0.1 equiv) were diluted with 1,2-dichloroethane (80-100 mL), and the reaction mixture was heated at reflux for 2 h. The reaction mixture was concentrated to half its original volume, filtered, and the filtrate was concentrated to dryness to provide crude 11. Compound 11 was diluted with acetonitrile (100-125 mL). The appropriate homophthalic anhydride (5, 6, or 7, 6.8-12.4 g, 41.9-55.9 mmol, 1.65 equiv) was added, followed by triethylamine (18-24 mL, 127.0-169.5 mmol, 5 equiv), and the solution was heated at reflux for 10 h. The solution was allowed to cool to room temperature, and the precipitate was filtered and washed with hot acetonitrile (2×35 mL) to provide the described compound.

According to the analysis of related databases, 20970-75-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; CUSHMAN, Mark S.; KISELEV, Evgeny A.; MORRELL, Andrew E.; US2014/18360; (2014); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of 1443-42-1, 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 1443-42-1, name is (4-Methylpyridin-3-yl)methanamine. This compound has unique chemical properties. The synthetic route is as follows.

In a sealed tube, a mixture of intermediate 5 (0.5 g, 1.01 mmol), (4-Methylpyridin- 3-yl)methylamine (0.108 mL, 1.21 mmol) and cesium carbonate (0.66 g, 2.02 mmol) in tert-amyl alcohol (5mL) was degazed with N2. 2-Dicyclohexyphosphino-2′,6′- diisopropoxy-l,l ‘-biphenyl (23.544 mg, 0.0505 mmol) and BrettPhos Precatalyst First Gen (40.305 mg, 0.0505 mmol) were added, the reaction mixture was purged with N2and heated at 100C for 18 h. Water and Ethyl acetate were added. The aqueous layer was extracted and the organic layer was separated, dried over MgS04, filtered and concentrated. This crude (578 mg) was purified by silica gel chromatography (25g of SiOH, 15muiotaeta, gradient from 100% DCM to 90/10/0.1 DCM/MeOH/NH4OH). The fractions containing the product were collected and evaporated until dryness to afford 405 mg (74%) of intermediate 6 which was used in the next step without any further purification.

According to the analysis of related databases, 1443-42-1, the application of this compound in the production field has become more and more popular.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; ANGIBAUD, Patrick, Rene; QUEROLLE, Olivier, Alexis, Georges; BERTHELOT, Didier, Jean-Claude; MEYER, Christophe; WILLOT, Matthieu, Philippe, Victor; MEERPOEL, Lieven; JOUSSEAUME, Thierry, Francois, Alain, Jean; (114 pag.)WO2018/178280; (2018); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 19346-44-2, 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 19346-44-2 as follows.

[0205] A solution of 2-fluoro-5-methyl-3-nitropyridine (1 g, 6.41 mmol), 4~(2,4~ difluorophenoxy)piperidine hydrochloride (1.919 g, 7.69 mmol) and K2CO3 (2.66 g, 19.22 mmol) in ACN (16.01 mL) was stirred at 80C for 5 hours. The reaction mixture was poured into water and extracted with EtOAc (3 x 50 mL). The organic layers were combined, dried over Na,2S(>4, and filtered. The filtrate was concentrated in vacuo and purified by flash chromatography (I SCO column) eluiing with a gradient of 0-100% EtOAc in heptane to give the title compound as a yellow solid (2.21 g, 99%). NMR (500 MHz, DMSQ-<:) delta ppm 1.66 - 1.73 (m, 2 H), 2.00 (d, J=12.20 Hz, 2 H), 2.25 (s, 3 H), 3.19 - 3.25 (m, 2 H), 3.52 - 3.57 (m, 2 H), 4.58 (dt, J=7,69, 3.72 Hz, 1H), 6,98 - 7.04 (m, 1H), 7.26 - 7.34 (m, 2 H), 8.1 1 (s, 1H), 8.28 -MS m/z [M+H 350.2, These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,19346-44-2, its application will become more common. Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; GREEN, Jason; HOPKINS, Maria; JONES, Benjamin; KIRYANOV, Andre A.; KUEHLER, Jon; MONENSCHEIN, Holger; MURPHY, Sean; NIXEY, Thomas; SUN, Huikai; (300 pag.)WO2018/183145; (2018); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 94170-15-7, name is 1-Methyl-2-oxo-1,2-dihydropyridine-4-carbaldehyde, the common compound, a new synthetic route is introduced below. Safety of 1-Methyl-2-oxo-1,2-dihydropyridine-4-carbaldehyde

Intermediate 2-11 (30 mg, 0.087 mmol) was dissolved in DCM (2 mL)4-Aldehyde-1-methylpyridine-2(1H)-one (14.3 mg, 0.104 mmol), NaBH (OAc) 3 (46.1 mg, 0.218 mmol).Stir at room temperature overnight.TLC monitors the reaction,Add saturated aqueous sodium bicarbonate (5 mL),Extracted with DCM (3 x 10 mL),Combine the organic phase,Wash with water (2 × 5mL),Dry over anhydrous sodium sulfate,filter,concentrate,The crude product was purified by silica gel column chromatography (DCM: MeOH=200:1-20:1)White solid (5.8 mg, yield: 14.5%).

The synthetic route of 94170-15-7 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Nanjing Yaojie Good Health Biological Technology Co., Ltd.; Wu Yongqian; Wang Lin; Yang Xiaoju; Tian Yuwei; (46 pag.)CN108341819; (2018); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem