Day: April 18, 2022

Electric Literature of 866546-09-0, 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 866546-09-0, name is 3-Bromo-5-chloro-1H-pyrrolo[2,3-b]pyridine. This compound has unique chemical properties. The synthetic route is as follows.

To a stirred suspension of 60% sodium hydride (5.7 g, 143 mmol) was added 3-bromo-5- chloro 1H pyrrolo[2,3-b]pyridine (2) (30 g, 130 mmol) in DMF (200 mL) at 0 C. After 1h, a solution of 4-toluenesulfonyl chloride (37.17 g, 195 mmol) in DMF (100 mL) was added slowly at the same temperature and stirred for 2 h. After completion of the reaction (as indicated by TLC), the mixture was poured in to cold water (500 mL), filtered the precipitated solid and dried under reduced pressure to afford 3-bromo-5-chloro-1-tosyl-1H-pyrrolo[2,3-b]pyridine (3) (40 g, 103 mmol, 80% yield) as an off- white solid. TLC system: 10% EtOAc in hexane Rf : 0.8 LCMS (ESI): m/z 386.4 [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 866546-09-0, 3-Bromo-5-chloro-1H-pyrrolo[2,3-b]pyridine.

Reference:
Patent; COCRYSTAL PHARMA, INC.; JACOBSON, Irina, C.; FEESE, Michael, David; LEE, Sam, Sk; (249 pag.)WO2018/200425; (2018); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 33252-28-7, Adding some certain compound to certain chemical reactions, such as: 33252-28-7, name is 6-Chloronicotinonitrile,molecular formula is C6H3ClN2, 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 33252-28-7.

To a suspended mixture of 6-chloronicotinonitrile (7g, 50.8 mmol) in EtOH(50 rnL), was added NH2NH2 (1Og, 310.2mmol). The mixture was stirred at room temperature for 10 min, and then 60 0C for 5h. The mixture was cooled to room temperature. The solids were filtered out, washed with water and dried under high vacuum to give 6- hydrazinylnicotinonitrile (3.5g). Compound 6 was prepared from 6-hydrazinylnicotinonitrile following the procedure of the synthesis of compound 4. 1H NMR (400 MHz, CDC13- CD3OD 10:1) delta ppm 11.37 (s, IH), 8.70 (t, J= 1.2 Hz, 1 H), 8.14 (s, IH), 8.1 l(dd, J= 1.04 and 9.52 Hz, 1 H), 7.96 (dd, J= 1.12 and 9.52 Hz, 1 H), 7.61 ( dd, J= 1.52 and 9.48 Hz, 1 H), 7.38 (d, J=9.0 Hz, 1 H), 1.77 (m, 1 H), 1.06 (m, 2 H), 0.90 (m, 2H) ESI-MS:m/z 377.2 (M+H)+.

According to the analysis of related databases, 33252-28-7, the application of this compound in the production field has become more and more popular.

Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; BRESSI, Jerome, C.; CHU, Shaosong; ERICKSON, Philip; KOMANDLA, Mallareddy; KWOK, Lily; LAWSON, John, D.; STAFFORD, Jeffrey, A.; WALLACE, Michael, B.; ZHANG, Zhiyuan; DAS, Sanjib; WO2010/19899; (2010); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 57963-08-3, 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. 57963-08-3, name is 5,6-Dimethylpyridin-2-amine, molecular formula is C7H10N2, 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 the arylhydrazine hydrochlorides (1.0 mmol), aminopyridines (20.0 mmol), and potassium carbonate (415 mg, 3.0 mmol) in DMSO (10 mL) was stirred at 25 C in air. The reactions were completed after 24 h, monitored by thin layer chromatography (TLC). Then, quenched by the addition of water, the reaction mixture was extracted with ethyl acetate. The organic layer was washed with water and brine solution and dried over anhydrous MgSO4. The solvent was removed under reduced pressure to give the crude products. Purified by column chromatography over silica gel (hexane/AcOEt), the pure products were afforded.

According to the analysis of related databases, 57963-08-3, the application of this compound in the production field has become more and more popular.

Reference:
Article; Taniguchi, Toshihide; Imoto, Mitsutaka; Takeda, Motonori; Matsumoto, Fukashi; Nakai, Takeo; Mihara, Masatoshi; Mizuno, Takumi; Nomoto, Akihiro; Ogawa, Akiya; Tetrahedron; vol. 72; 27-28; (2016); p. 4132 – 4140;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Electric Literature of 1033772-26-7, 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 1033772-26-7, name is Methyl 1H-pyrazolo[3,4-c]pyridine-5-carboxylate. This compound has unique chemical properties. The synthetic route is as follows.

A solution of methyl 1-(4-fluorobenzyl)-3-formyl-1 H-pyrrolo[2,3-c]pyridine-5-carboxylate (312 mg, 1.0 mmol, 1.0 eq) in 4 mL anhydrous dichloromethane) was mixed with a solution of 3-methylpiperazin- 2-one (114 mg, 1.0 mmol, 1.0 eq) in 4 To a stirring solution of methyl 1 H-pyrazolo[3,4-c]pyridine-5-carboxylate (100 mg, 0.351 mmol) in methanol (4 mL) was added a 3.0 M solution of LiOH in water (0.351 mL, 1.05 mmol) and the mixture was stirred overnight, then 1.0 M hydrochloric acid in diethyl ether was added (1.05 mL, 1.05 mmol) and the solvent was evaporated under reduced pressure.. The crude solid was dissolved in DMF and N-methylhydroxylamine hydrochloride (58 mg, 0.698 mmol) was added followed by triethylamine (214 mL, 1.154 mmol) and HATU (266 mg, 0.698 mmol). The mixture was stirred overnight. Water was added and the mixture was extracted with dichloromethane (3 x 20 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated. The crude solid was dissolved in DMSO and purified by reverse phase preparative HPLC to provide a white solid (105 mg, 100% yield). ¹H NMR (DMSO-d6) : No. 10.24 (bs, 1 H), 9.26 (s, 1 H), 8.07 (s, 1 H), 7.37 (m, 2H), 7.15 (m, 2H), 5.81 (s, 2H), 3.31 (s, 3H). Anal. HPLC: >95% ( 254,222 nM). HRMS calcd for C15H13FN4O2 (M+H) 301.1088, found 301.1096.

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 1033772-26-7, Methyl 1H-pyrazolo[3,4-c]pyridine-5-carboxylate.

Reference:
Patent; PFIZER INC.; WO2005/103003; (2005); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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.62002-31-7, name is 4,5,6,7-Tetrahydro-3H-imidazo[4,5-c]pyridine dihydrochloride, molecular formula is C6H11Cl2N3, molecular weight is 196.08, as common compound, the synthetic route is as follows.SDS of cas: 62002-31-7

Preparation 7.71 -(2-Methoxyethyl)-4,5,6,7-tetrahydro-1 /-/-imidazo[4,5-c]pyridine.Step 1 : Benzyl 1 ,4,6,7-tetrahydro-5/-/-imidazo[4,5-c]pyridine-5-carboxylate.A mixture of 2.0 g of 4,5,6,7-tetrahydro-1 H-imidazo[4,5-c]pyridine dihydrochloride, 2.36 g of NaHCO3 and 2.45 g of N- (benzyloxycarbonyloxy)succinimide in 80 ml of dioxane/water mixture (50/50; v/v) is stirred for 16 hours at RT. The reaction mixture is extracted with EtOAc, the organic phase is washed with a saturated solution of NaHCO3, with 0.1 M HCI solution, with saturated NaCI solution, it is dried and the solvent is evaporated under vacuum. The residue is chromatographed on silica gel, eluting with DCM/MeOH mixture. 1 .9 g of the expected compound is obtained.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,62002-31-7, 4,5,6,7-Tetrahydro-3H-imidazo[4,5-c]pyridine dihydrochloride, and friends who are interested can also refer to it.

Reference:
Patent; SANOFI; BADORC, Alain; BOLDRON, Christophe; DELESQUE, Nathalie; FOSSEY, Valerie; LASSALLE, Gilbert; YVON, Xavier; WO2012/146318; (2012); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 16744-81-3, name is 4-Methoxypicolinaldehyde, molecular formula is C7H7NO2, 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. Recommanded Product: 4-Methoxypicolinaldehyde

A suspension of 4-(6-(3 ,6-diazabicyclo[3. 1.1 ]heptan-3 -yl)pyridin-3 -yl)-6-(2-hydroxy- 2-methylpropoxy)pyrazolo[ 1,5 -a]pyridine-3 -carbonitrile dihydrochloride (Intermediate P43;30.1 mg, 0.063 1 mmol) and DIEA (27.5 tL, 0.158 mmol) in DCM (631 tL) was stirred for 5 mm at ambient temperature. The reaction mixture was treated sequentially with 4- methoxypicolinaldehyde (8.65 mg, 0.0631 mmol) and NaBH(AcO)3 (26.7 mg, 0.126 mmol). The reaction mixture was stirred for 3 d at ambient temperature. The resulting suspension was diluted with a minimal amount of DCM, then MeOH was added dropwise until the mixture became homogeneous. The DCM/ MeOH solution was purified directly by silica chromatography (using 0-100percent DCM in Hexane then 0-100percent (2percent NH4OHI 20percent MeOHI 78percent DCM) in DCM as the gradient eluent as the gradient eluent) to afford the title compound (27.2 mg, 82percent yield). MS (apci) m/z = 526.2 (M+H).

With the rapid development of chemical substances, we look forward to future research findings about 16744-81-3.

Reference:
Patent; ANDREWS, Steven W.; ARONOW, Sean; BLAKE, James F.; BRANDHUBER, Barbara J.; COOK, Adam; HAAS, Julia; JIANG, Yutong; KOLAKOWSKI, Gabrielle R.; MCFADDIN, Elizabeth A.; MCKENNEY, Megan L.; MCNULTY, Oren T.; METCALF, Andrew T.; MORENO, David A.; TANG, Tony P.; REN, Li; (668 pag.)WO2018/71447; (2018); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 6635-86-5, 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. 6635-86-5, name is 2-Amino-4-methyl-3-nitropyridine, molecular formula is C6H7N3O2, 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.

To a solution of 4-methyl-3-nitropyridin-2-amine (25 g, 163 mmol) in AcOH (250 ml) was added NaOAc (26.7 g, 326 mmol) and cooled to 15-20C. Bromine (78.24 g, 489 mmol) in AcOH (200 ml) was added over 30 min and stirred at room temperature for a period of 2 h. The reaction mixture was poured into ice water, the solid formed was filtered and dried to afford title compound as a yellow solid (32 g, 84 %); 1H NMR (400 MHz, DMSO-d6) delta 8.28 (s, 1H), 7.05 (s, 2H), 2.31 (s, 3H).

According to the analysis of related databases, 6635-86-5, the application of this compound in the production field has become more and more popular.

Reference:
Patent; AURIGENE DISCOVERY TECHNOLOGIES LIMITED; BORUAH, Anima; CHITTY VENKATA, Srikanth; HOSAHALLI, Subramanya; PANIGRAHI, Sunil Kumar; WO2014/125408; (2014); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 942189-65-3, name is 2-(6-Bromopyridin-3-yl)pyrimidine. A new synthetic method of this compound is introduced below., Quality Control of 2-(6-Bromopyridin-3-yl)pyrimidine

A mixture of 2-(6-Bromo-pyridin-3-yl)-pyrimidine 76 (100mg, Q.425mmol), potassium carbonate (100mg,0.724mmol), and piperazine (100mg,1.16mmol) in DMF (5mi) were stirred at 1000C for 1 hour. The reaction was cooled.solvent evaporated under reduced pressure, and the residue dissolved in MeCb (150ml), washed with H2O (50ml),dried over MgSO4,filtered and evaporated solvent yielding title product 77 as a white solid (100mg,98%). ESMS (MH, 242).

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, 942189-65-3, 2-(6-Bromopyridin-3-yl)pyrimidine.

Reference:
Patent; SCHERING CORPORATION; WO2007/70398; (2007); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 5029-67-4, 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 5029-67-4, name is 2-Iodopyridine. This compound has unique chemical properties. The synthetic route is as follows.

General procedure: An oven-dried Schlenk tuble equipped with a magnetic stirring bar was charged with MCM-41-N,N-Pd(OAc)2 (49 mg, 0.02 mmol Pd), aryl iodide (3.2 mmol), triarylbismuth (1.0 mmol), and K2CO3 (4.0 mmol) followed by anhydrous NMP (3 mL) under Ar. The reaction mixture was stirred in an oil bath at 110 C for 5-24 h. The reaction mixture was cooled to room temperature and filtered. The MCM-41-N,N-Pd(OAc)2 complex was washed with distilled water (2×5 mL), NMP (2×5 mL) and Et2O (2×5 mL) and reused in the next run. The filtrate was quenched with water, and extracted with ethyl acetate (2×30 mL). The combined ethyl acetate extract was washed with dilute hydrochloric acid (10 mL), saturated sodium bicarbonate solution (10 mL), brine (2×10 mL), and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure and the residue was purified by flash column chromatography on silica gel.

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 5029-67-4, 2-Iodopyridine.

Reference:
Article; Xu, Caifeng; Yin, Lin; Huang, Bin; Liu, Haiyi; Cai, Mingzhong; Tetrahedron; vol. 72; 17; (2016); p. 2065 – 2071;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 2897-43-0, name is 2,6-Dichloro-3-nitropyridin-4-amine. A new synthetic method of this compound is introduced below., Recommanded Product: 2,6-Dichloro-3-nitropyridin-4-amine

(6) 2,4,6-trichloro-3-nitropyridine 2,6-dichloro-3-nitropyridine-4-amine (2.27 g, 10.9 mmol) was added to 48 mL concentrated hydrochloric acid, and cooled to 0-5 C. To the solution was added sodium nitrite (2.26 g, 32.7 mmol) in batches. After the addition of sodium nitrite, the reaction solution was stirred for 1 h at 0-5 C , and then stirred for 2 h at 25 C, adjusted to pH = 7 with 40 % sodium hydroxide solution, and extracted with ethyl ether. After the organic phase was dried (Na2SO4) and concentrated, it was subjected to column chromatography eluted with petroleum ether to afford 2 g white solid with a yield of 80.7%.

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, 2897-43-0, 2,6-Dichloro-3-nitropyridin-4-amine.

Reference:
Patent; Xuanzhu Pharmaco., Ltd.; EP2524917; (2012); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem