Tag: M.W:100-200

Electric Literature of 60032-57-7, 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 60032-57-7, name is 2-Methylnicotinaldehyde. This compound has unique chemical properties. The synthetic route is as follows.

(b) methyl 2-Q -(hydroxy(2-methyipyridin-3-yl)mnethyi)bcnzofuran-5-yl)acctate: To asohLtion of methyl 2-(Z-bromobenzofuran-5-yi)acctate (0.35 g, 1.3 mmol) in dry THE (5 niL) wasadded i-PrMgCI-iithium chloride (1.3 M solution in THF, 1.3 mL, 1.6 nnol) dropwise at 0 C andthe reaction mixture was stilTed for 30 mm maintaining the same temperature. ?To the reaction mixture was added a solution of 2-methylnicotinaldehyde (157 rng, 1.3 mniol) in dry TF1F (5 mL) and the reaction mixture was further stirred for 2 h at 0 C. The reaction mixture was quenched with saturated NH4C1 solution and the organic product was extracted with EtOAc. The organic layer was dried over anhydrous Na2SO4 and the solvent was removed under vacuum. The crudeproduct was purified by column chromatography (neutral alumina, eluent 5-10% MeOI-f in CH2C12) to afford the title compound (160 mg, yield 40%) as a yellow viscous liquid. ?H NMR (300 MHz, MeOH-d,) 6 ppm 8.36 – 8.34 (dd, J= 4.9 Hz, 1.6 Hz, IH), 8.01 – 7.97 (dd, J= 7.9 Hz, 1.5 Hz, 1H), 7.447.43 (d,J 1.3 Ffz, 1Ff), 7.37-7.30 (in, 2Ff), 7.18 -7.14 (dd,J 8.4 Ffz, 1.6 Ffz, 1Ff), 6.56 (s, 1ff), 6.08 (s, 1Ff), 3.69 (s, 2Ff), 3.65 (s, 3Ff), 2.52 (s, 3Ff).

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 60032-57-7, 2-Methylnicotinaldehyde.

Reference:
Patent; TEMPERO PHARMACEUTICALS, INC.; BALOGLU, Erkan; GHOSH, Shomir; LOBERA, Mercedes; SCHMIDT, Darby, R.; WO2013/19626; (2013); 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. 1594-58-7, name is N-Hydroxynicotinimidamide, molecular formula is C6H7N3O, 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 N-Hydroxynicotinimidamide

Add 0.05 mol (6.85 g) to a 250 mL three-necked flaskN-hydroxynicotinamide,100mL acetonitrile as solvent,0.055 mol (5.5 g) of triethylamine as an acid binding agent, and stirring, 0.05 mol (16.5 g) of 3-bromo-1-(3-chloropyridin-2-yl)-1H-pyrazole-5-carbonyl chloride Diluted with 50 mL of ethyl acetate and added dropwise to the reaction flask.The reaction was carried out for 2 h after the completion of the dropwise addition.TLC monitoring until the reaction is complete,Add an appropriate amount of saturated sodium bicarbonate solution,Filtering,Made a brown solid,Rinse with methanol to obtain 18.1 g of a yellow solid.The yield was 96.02%.

With the rapid development of chemical substances, we look forward to future research findings about 1594-58-7.

Reference:
Patent; Qingdao University of Science and Technology; Wang Minghui; Xu Liangzhong; Liu Liancai; Sun Jianxin; Cui Huanqi; (7 pag.)CN109336879; (2019); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 13466-41-6, Adding some certain compound to certain chemical reactions, such as: 13466-41-6, name is 4-Methylpyridin-2-ol,molecular formula is C6H7NO, 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 13466-41-6.

Step 1 3-(4-Methyl-2-oxo-2H-pyridin-1-yl)-5-nitro-benzoic acid methyl ester To a 25 ml round-bottomed flask was added 2-Hydroxy-4-methylpyridine (17.9 mg, 0.164 mmol), 3-Iodo-5-nitro-benzoic acid methyl ester (40 mg, 0.137 mmol), CuI (5.2 mg, 0.027 mmol) and 1,4-dioxane (10 ml). The reaction mixture was stirred for 5 minutes to the dissolve 2-Hydroxy-4-methylpyridine and 3-iodo-5-nitro-benzoic acid methyl ester, after which 1,10-phenanthroline (9.84 mg, 0.055 mmol) was added, followed by K3PO4 (174 mg, 0.082 mmol). The reaction mixture was flushed with N2, and heated to 110 C. for 24 hours. After cooling to room temperature, the mixture was diluted with H2O, and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over Na2SO4 and concentrated under reduced pressure. The residue was purified by flash chromatography to give 3-(4-Methyl-2-oxo-2H-pyridin-1-yl)-5-nitro-benzoic acid methyl ester (39.45 mg, 61%) as light yellow solid. MS (M+H)=289.

According to the analysis of related databases, 13466-41-6, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Dillon, Michael Patrick; Hawley, Ronald Charles; Chen, Li; Feng, Lichun; Yang, Minmin; US2008/4442; (2008); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 1003-73-2, Adding some certain compound to certain chemical reactions, such as: 1003-73-2, name is 3-Methylpyridine 1-oxide,molecular formula is C6H7NO, 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 1003-73-2.

PREPARATION EXAMPLE 3 2-Chloro-5-methyl-pyridine A solution of 20 g (0.1 mol) of N,N-dipropylsulphamoyl chloride in 60 ml of chlorobenzene is added dropwise under nitrogen to a solution of 5.5 g (50 mmol) of 3-methylpyridine-1-oxide and 10.1 g (0.1 mol) of triethylamine in 40 mol of chlorobenzene. The mixture is then heated to 70 C. for a further 3 hours, the solid is then filtered off with suction, the filter cake is washed with chlorobenzene and the liquid phase is extracted using conc. hydrochloric acid.

According to the analysis of related databases, 1003-73-2, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Bayer Aktiengesellschaft; US5099025; (1992); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 19798-80-2, 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 19798-80-2, name is 4-Chloropyridin-2-amine. This compound has unique chemical properties. The synthetic route is as follows.

To a solution of 2-amino-4-chloropyridine (150 g, 0.78 mol) in DMF (1.5 L) was added NIS (341 g, 1.52 mol) and the reaction mixture stirred at RT for 18 h before being concentrated in vacuo to 300 mL volume. The resultant residue was poured into 10% aqueous sodium thiosulfate solution (1.2 L), stirred for 15 min and the precipitate formed collected by filtration, washed with water then dried at 35 C. in vacuo to give the title compound as a pale brown solid (185 g, 62%). 1H NMR 400 MHz (CDCl3) delta: 8.33 (1H, s), 6.68 (1H, s), 4.52 (2H, s).

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 19798-80-2, 4-Chloropyridin-2-amine.

Reference:
Patent; Genentech, Inc.; US2012/245144; (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. 1003-73-2, name is 3-Methylpyridine 1-oxide, molecular formula is C6H7NO, 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: 1003-73-2

Example 1; A. 3-Methyl-isonicotinonitrile.; To 3-methyl-pyridine 1 -oxide (15.90 g, 150 mmol) is added at 0 0C during 30 min. dimethylsulfate (15.60 mL). The resulting reaction mixture is stirred overnight at 40 0C. A solution of KCN (10.75 g, 165 mmol) in a mixture of EtOH/water 1 : 1 (120 mL) is added and the reaction mixture is stirred overnight at 40 0C. The reaction mixture is concentrated in vacuo and the residue is partitioned between EtOAc and water. The aqueous phase is extracted with EtOAc and the combined organic layers are dried over Na2SO4, filtered and concentrated at reduced pressure. Purification by flash column chromatography (silica gel, cyclohexane / EtOAc 85 : 15) affords the title compound as orange crystals (6.00 g, 50.80 mmol, 34%). 1H NMR (400 MHz, DMSO-(Z6) delta ppm 8.76 (s, 1 H), 8.64 (d, J = 4.9 Hz, 1 H), 7.80 (d, J = 4.9 Hz, 1 H).

With the rapid development of chemical substances, we look forward to future research findings about 1003-73-2.

Reference:
Patent; NOVARTIS AG; WO2008/122615; (2008); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application of 107504-07-4, Adding some certain compound to certain chemical reactions, such as: 107504-07-4, name is Methyl 5-fluoropicolinate,molecular formula is C7H6FNO2, 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 107504-07-4.

To a mixture of (2,6-difluoro-4-iodophenyl)methanol (3 g) and THF (30 ml) was added sodium hydride (60% in oil, 444 mg) at 30C.The mixture was stirred at 30C for 30 min, and methyl 5-fluoropyridine-2-carboxylate (2.06 g) was added thereto. The mixture was stirred at 30C for 2 hr. To the mixture was added water, and the mixture was extracted with ethyl acetate. The obtained organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (ethyl acetate/petroleum ether) to give the title compound (2.4 g). 1H NMR (400 MHz, CDCl3) delta 3.98 (3H, s), 5.17 (2H, s), 7.30-7.45 (3H, m), 8.12 (1H, d, J = 8.8 Hz), 8.43 (1H, d, J = 2.8 Hz).

According to the analysis of related databases, 107504-07-4, the application of this compound in the production field has become more and more popular.

Reference:
Patent; Takeda Pharmaceutical Company Limited; MIZOJIRI, Ryo; ASANO, Moriteru; TOMITA, Daisuke; BANNO, Hiroshi; TAWADA, Michiko; NII, Noriyuki; GIPSON, Krista E.; MAEZAKI, Hironobu; TSUCHIYA, Shuntaro; IMAI, Mayumi; AMANO, Yuichiro; (100 pag.)EP3279183; (2018); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 56622-54-9, 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.56622-54-9, name is (6-Methylpyridin-3-yl)methanamine, molecular formula is C7H10N2, molecular weight is 122.17, as common compound, the synthetic route is as follows.

2-Fluoro-N-((6-methylpyridin-3-yl)methyl)-9H-purin-6-amineTo a stirred solution of 6-chloro-2-fluoropurine ( 0.4g, 2.3 mmol) in n-BuOH (50 ml) under an argon atmosphere at O0C, was added DIEA (2.5 ml, 14.7 mmol) followed by (6-methylpyridin-3-yl)methanamine (0.36g, 2.95 mmol). The reaction mixture was stirred at this temperature for 1 h and then allowed to return to room temperature and stirred for 4h, it was still seen incomplete, hence heated the reaction to 1000C and left at that temperature for 8h. The solvent was evaporated in vacuo and the residue was purified by gradient column chromatography on silica gel, eluted with CHCl3 :MeOH (100:0 ? 90:10), to afford the product as a white solid; Yield: 0.38 g (65%) deltaH CDCl3, 250 MHz) 2.44 ( 3 H, s, CH3), 3.66 – 3.57 ( 2 H, m, NHCH2), 4.63 ( 1 H, s, br, NH),7.25 ( 1 H, d, J 7.5, ArH), 7.71 (1 H, dd, J 2.5, 7.5, ArH), 8.14 ( 1 H, s, ArH), 8.49 (1 H, s, ArH), 9.07 (1 H, s, br, NH); deltac ( CDCl3, 250 MHz) 159.12 (C), 158.62 (C), 157.61 (C), 155.56 (C), 147.44 (CH), 146.99 (CH), 136.32 (C), 123.05 (2 x CH), 119.42 (C), 41.64 (CH2), 18.47 (CH3); m/z 259.2 (M + H)

Statistics shows that 56622-54-9 is playing an increasingly important role. we look forward to future research findings about (6-Methylpyridin-3-yl)methanamine.

Reference:
Patent; CYCLACEL LIMITED; CANCER RESEARCH TECHNOLOGY LIMITED; WO2008/122767; (2008); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 18437-58-6, 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 18437-58-6, name is 4-Amino-2-picoline. This compound has unique chemical properties. The synthetic route is as follows.

To a solution of Intermediate 83B (10 mg, 0.016 mmol) in THF (1 mL) was added2-methylpyridin-4-amine (5.35 mg, 0.049 mmol) and DIEA (0.029 mL, 0.165 mmol) inDCM (1 mL). The mixture was stirred at room temperature for 2 h. TBAF (0.165 mL, 0.165 mmol) was added and the mixture was stirred at room temperature overnight. The reaction was quenched by addition of a small amount of MeOH/water/0. 1% TFA (HPLC solvent). Solvent was removed under vacuum. The residual was dissolved in DMSO andpurified via preparative LC/MS (method D, 30-70% B over 20 mm., then a 5-mm hold at100% B). Fractions containing the desired product were combined and dried via centrifugal evaporation to give Example 85 (0.8 mg, 1.420 imol, 8.60 % yield). ?H NMR (500MHz, DMSO-d6) 8.81 (s, 1H), 8.75 (d, J=1.7 Hz, 1H), 8.35 (d, J5.8 Hz, 1H), 7.95 (s, 1H), 7.50-7.39 (m, 2H), 7.15 (d, J=11.0 Hz, 1H), 5.65 (br. s., 1H), 4.83 (d, J3.6 Hz,2H), 4.71 (br. s., 1H), 4.64 (dd, J=1 1.6, 2.2 Hz, 1H), 4.57-4.44 (m, 2H), 4.31 (dd, J1 1.6,7.2 Hz, 1H), 4.10 (s, 3H), 2.46 (s, 3H). LC-MS: method C, RT = 1.48 mm, MS (ESI) m/z: 564.10 (M+H). Analytical HPLC purity (method B): 100%.

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 18437-58-6, 4-Amino-2-picoline.

Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; ZHANG, Xiaojun; PRIESTLEY, Eldon Scott; HALPERN, Oz Scott; JIANG, Wen; REZNIK, Samuel Kaye; RICHTER, Jeremy M.; (545 pag.)WO2018/13776; (2018); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 16498-81-0, 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. 16498-81-0, name is 2-Methoxynicotinic acid, molecular formula is C7H7NO3, 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-Methoxy-3-pyridinecarboxylic acid (0.028 mol) was dissolved in DCM (150 ml). Thionyl chloride (8.2 ml; 0.112 mol)) was added dropwise to this mixture and the mixture was refluxed for 2 hours and 30 minutes. The solvent was evaporated. Then DCM (150 ml) was added and the solvent was evaporated again. The crude compound was dissolved in DCM (150 ml). First l-(phenylmethyl)-3-pyrrolidinamine (0.028 mol) was added and then a saturated aqueous NaHCCb solution (75 ml) was added. The mixture was reacted for 2 hours. Then, the layers were separated. The separated organic layer was dried (MgSO4), filtered and the solvent was evaporated. The residue was purified by column chromatography (eluent: from 100 % CH2Cl2 till CH3OH/CH2C12 1/100). The product fractions were collected and the solvent was evaporated, yielding 7.97 g of intermediate (23); 2-Methoxy-3-pyridinecarboxylic acid (0.028 mol) was dissolved in DCM (150 ml). Thionyl cloride (8 ml; 0.112 mol) was added dropwise to this mixture and the mixture was refluxed for 2 hours and 30 minutes. The solvent was evaporated. Then DCM (150 ml) was added and the solvent was evaporated again. The crude compound was dissolved in DCM (150 ml). First N-methyl-N-(phenylmethyl)-l,3-propanediamine (0.028 mol) was added and then a saturated aqueous nuaHCtheta3 solution (75 ml) was added. The mixture was reacted for 2 hours. Then, the layers were separated. The separated organic layer was dried (MgSO4), filtered and the solvent was evaporated. The residue was purified by column chromatography (eluent: from 100 % CH2Cl2 till CH3OH/CH2C12 1/100). The product fractions were collected and the solvent was evaporated, yielding 8.7 Ig of intermediate (27); -Methoxy-3-pyridinecarboxylic acid (0.00485 mol) was dissolved in DCM (50 ml). Thionyl chloride (1.4 ml) was added dropwise to this mixture and the mixture was refluxed for 2 hours and 30 minutes. The solvent was evaporated. Then DCM (50 ml) was added and the solvent was evaporated again. The crude compound was dissolved in DCM (50 ml). First 4-(phenylmethyl)-2-morpholinemethanamine (0.00485 mol) was added and then a saturated aqueous NaHCO3 solution (25 ml) was added. The mixture was reacted for 2 hours. Then, the layers were separated. The separated organic layer was dried (MgSO4), filtered and the solvent was evaporated. The residue was purified by column chromatography (eluent : from 100 % CH2Cl2 till CH3OH/CH2C12 1/100). The product fractions were collected and the solvent was evaporated, yielding 1.6 g of intermediate (29); 2-Methoxy-3-pyridinecarboxylic acid (0.0269 mol) was dissolved in DCM (150 ml). Thionyl chloride (8 ml) was added dropwise to this mixture and the mixture was refluxed for 2 hours and 30 minutes. The solvent was evaporated. Then DCM (150 ml) was added and the solvent was evaporated again. The crude compound was dissolved in DCM (150 ml). First 4-aminohexahydro-lH-azepine-l-carboxylic acid, ethyl ester (0.0269 mol) was added and then a saturated aqueous NaetaCtheta3 solution (75 ml) was added. The mixture was reacted for 2 hours. Then, the layers were separated. The separated organic layer was dried (MgSO4), filtered and the solvent was evaporated. The residue was purified by column chromatography (eluent: from 100 % CH2CL) till CH3OH/CH2Cl2 1/100). The product fractions were collected and the solvent was evaporated, yielding 8.63 of intermediate (31).

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 16498-81-0, 2-Methoxynicotinic acid.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; WO2008/49808; (2008); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem