Day: September 21, 2020

1228779-96-1, 3-Nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)benzenesulfonamide is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: To a solution of appropriate crude acid (1 eq) in CH2Cl2 wereadded EDCI (3 eq), DMAP (0.3 eq) and DIPEA (3 eq). The solutionwas stirred at room temperature for 0.5 h and compound 23 [7] (0.8eq) was added. The resulting mixture was stirred for another 8 hand water was added. The layers were separated, and the aqueouslayer was extracted with CH2Cl2. The combined organic layer waswashed with brine, dried over anhydrous Na2SO4, filtered, andconcentrated under vacuo. The residue was prified by chromatography(CH2Cl2/CH3OH 40:1) to provide target compounds 27a-i,28a-d and 34a-c., 1228779-96-1

1228779-96-1 3-Nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)benzenesulfonamide 57474953, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Article; Liu, Xiaohua; Zhang, Yu; Huang, Wenjing; Luo, Jia; Li, Yang; Tan, Wenfu; Zhang, Ao; European Journal of Medicinal Chemistry; vol. 159; (2018); p. 149 – 165;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.25850-22-0,2,2-Dimethyltetrahydro-2H-pyran-4-amine,as a common compound, the synthetic route is as follows.

Production Example 321 (0641) 5-Benzyloxymethylisoxazole-3-carboxylic acid (0.24 g, 1.0 mmol), 4-amino-2,2-dimethyltetrahydropyran (0.18 ml, 1.2 mmol) and 1-hydroxybenzotriazole (0.01 g, 0.1 mmol) were added to chloroform (amylene addition product) (2.5 mL). 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (0.24 g, 1.2 mmol) was added to the mixture at room temperature, and the mixture was stirred overnight. Then, dilute hydrochloric acid was added thereto, and the mixture was extracted twice with chloroform. The organic layer was passed through a short column to remove impurities, and then concentrated under reduced pressure. The residue was applied to a silica gel column chromatography to obtain 0.29 g of N-(2,2-dimethyltetrahydropyran-4-yl)-5-benzyloxymethylisoxa zole-3-carboxamidc: (hereinafter, referred to as Compound of Present Invention (335)) represented by the following formula. 1H-NMR(CDCl3, TMS, delta(ppm)):1.26(3H, s), 1.29(3H, s), 1.33-1.40(1H, m), 1.41-1.52(1H, m), 1.89-2.00(2H, m), 3.72-3.84(2H, m), 4.27-4.38(1H, m), 4.61(2H, s), 4.65(2H, s), 6.62(1H, br s), 6.72(1H, s), 7.30-7.40(5H, m)

25850-22-0, As the paragraph descriping shows that 25850-22-0 is playing an increasingly important role.

Reference£º
Patent; Sumitomo Chemical Company, Limited; MITSUDERA, Hiromasa; AWASAGUCHI, Kenichiro; AWANO, Tomotsugu; UJIHARA, Kazuya; EP2952096; (2015); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

388109-26-0, Ethyl 3-oxotetrahydro-2H-pyran-4-carboxylate is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

388109-26-0, Step 1:To a solution of ethyl 3-oxotetrahydro-2H-pyran-4-carboxylate (1.0 g, 5.81 mmol) in DCM (30 mL) was added DIPEA (1.22 mL, 6.97 mmol) and Tf2O (1.08 mL, 6.39 mmol) at -78 C., then it was warmed up to room temperature and stirred at room temperature for 2 h, the solution was diluted with DCM, washed with Sat. NaHCO3, brine, dried and concentrated to give ethyl 5-(((trifluoromethyl)sulfonyl)oxy)-3,6-dihydro-2H-pyran-4-carboxylate as crude product (2 g).

The synthetic route of 388109-26-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; GLOBAL BLOOD THERAPEUTICS, INC.; Metcalf, Brian W.; (29 pag.)US9248199; (2016); B2;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.101691-94-5,4-(Iodomethyl)tetrahydro-2H-pyran,as a common compound, the synthetic route is as follows.

Step 2: Methyl 2-cyclopropyl-6-((tetrahydro-2H-pyran-4-yl)methoxy)isonicotinate To a stirring suspension of methyl 6-cyclopropyl-2-oxo-l,2-dihydropyridine-4-carboxylate (212 mg, 1.1 mmol) in acetonitrile (5 mL) were added potassium carbonate (455 mg, 3.29 mmol) and 4-(iodomethyl)tetrahydro-2H-pyran (CAS-RN 101691-94-5; 744 mg, 3.29 mmol). The reaction mixture was heated at 80C for 16 h and then evaporated in vacuo. The residue was purified by chromatography (silica gel; heptane-ethyl acetate gradient) to produce the title compound (188 mg, 59%). Colourless oil, MS: 292.2 (M+H)+., 101691-94-5

The synthetic route of 101691-94-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; DI GIORGIO, Patrick; HERT, Jerome; HUNZIKER, Daniel; KUEHNE, Holger; MATTEI, Patrizio; RUDOLPH, Markus; WO2015/144605; (2015); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5631-96-9,2-(2-Chloroethoxy)tetrahydro-2H-pyran,as a common compound, the synthetic route is as follows.

a 3-Methyl-6-[2-(tetrahydropyran-2-yloxy)ethyl]-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione 40 g of ethyldiisopropylamine and 52.5 g of 2-(2-chloroethoxy)tetrahydropyran (96% pure according to GC) were added to 54.5 g of 3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione in 1.5 l of dimethylformamide, with stirring, and the mixture was heated for 30 h at 70 C. It was concentrated under vacuum, the residue was worked up by extraction with dichloromethane and water and the combined dichloromethane phases were dried and concentrated to give 25 g of 3-methyl-6-[2-(tetrahydropyran-2-yloxy) ethyl]-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione, which was purified by bulb-tube distillation at a bath temperature of 80 C. and 0.1 mbar and by column chromatography on aluminum oxide (activity grade III) and elution with dichloromethane/ethanol (volume ratio 95:5). 6-(2-Hydroxyethyl)-3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione, 5631-96-9

As the paragraph descriping shows that 5631-96-9 is playing an increasingly important role.

Reference£º
Patent; Hoechst Aktiengesellschaft; US5556854; (1996); A;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

4295-99-2,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.4295-99-2,4-Cyanotetrahydro-4H-pyran,as a common compound, the synthetic route is as follows.

Three-neck flask equipped with mechanical stirrer, thermometer, dropping funnel, 250ml of water was added to the flask, stirring was added 4-cyano-tetrahydropyran 111.14g (1mole), cooled to 0 ~ 5 ¡ã C, was added at a concentration of 10 minutes 13.8percent sodium hydroxide solution, a total of 290 g (1 mole), temperature controlled at 0 ~ 10 ¡ã C, after each addition incubated for 15 to 20 minutes, all the alkali was added, stirred for 1 to 3 hours, the reaction was complete by gas detecting material, controlling the temperature of 0 ~ 5 ¡ã C, was slowly added to a concentration of 10percent sodium hypochlorite solution 1116.6g (1.5mole), plus Bi, 0 ~ 5 ¡ã C for 1 hour, heated at reflux temperature for 2 hours to complete the reaction intermediate vapor detection, water cooling to 10 ~ 40 ¡ã C, with 500ml dichloromethane and 50ml methanol solvent mixture and extracted 3 times, the combined extracts were recovered by distillation of methylene chloride, methylene chloride was distilled off to make, distillation to give 4-amino-tetrahydropyran 75.3 g, with a purity of 99.1percent, a yield of 73.7percent.

4295-99-2 4-Cyanotetrahydro-4H-pyran 11815837, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Patent; Qingdao Frontierchem Co.,Ltd; Wang, yuchen; Liu, guihong; Li, XIAOYAO; Liu, Guo Chao; (5 pag.)CN102993144; (2016); B;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

19752-84-2, Tetrahydro-2H-pyran-3-ol is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of Intermediate 227A (32.6 mg, 0.06 mmol) in THF (1 mL) was added tetrahydro-2H-pyran-3-ol (61.3 mg, 0.600 mmol) and KHDMS (0.120 mL, 1M,0.120 mmol). The mixture was stirred at room temperature for 1 hour. TLC and LCMS indicated completion of the reaction. The reaction was quenched with iN HC1, extracted with EtOAc, the combined organic layer was washed with saturated sodium bicarbonate, brine, dried over sodium sulfate and concentrated. The compound was dissolved in DMSO and purified via preparative LC/MS (Method D: Gradient: 45-90% B over 20minutes, then a 5-minute hold at 100% B). Fractions containing the desired product were combined and dried via centrifugal evaporation to Example 234 (1.6 mg, 3.00 imol, 5.00 % yield). ?H NMR (500MHz, DMSO-d6) 8.67 (s, 1H), 8.52 (s, 1H), 7.86 (d, J8.9 Hz, 1H), 7.77 (s, 1H), 7.72-7.42 (m, 2H), 7.02 (d, J=8.8 Hz, 1H), 5.02 (br. s., 1H), 4.49 (br. s., 1H), 4.04 (s, 3H), 3.53-3.41 (m, 3H), 3.34 (br. s., 2H), 3.18-3.09 (m, 1H), 2.59 (s,3H), 1.83 (br. s., 1H), 1.66 (br. s., 1H), 1.57 (br. s., 1H), 1.42 (br. s., 1H). LC-MS:method L, RT = 2.32 mm, MS (ESI) m/z: 507.30 (M+H)t Analytical HPLC purity (method B): 95%., 19752-84-2

As the paragraph descriping shows that 19752-84-2 is playing an increasingly important role.

Reference£º
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;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

344329-76-6, Tetrahydro-2H-pyran-4-carboxamide is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 87 A^-[10,ll-dichloro-4-oxo-3-(trifluoromethyl)-2,5,7-triazatricyclo[6.4.0.02’6]dodeca- l(12),6,8,10-tetraen-3-yl]oxane-4-carboxamide (ABR 239441) To a stirred solution of oxane-4-carboxamide (500 mg, 3.87 mmol) in DMF (15 mL) was added pyridine (312 mu, 3.87 mmol) followed by ethyl 3,3,3-trifluoro-2-oxopropanoate (658 mg, 3.87 mmol) at room temperature under argon. The reaction mixture was stirred at room temperature for 1 h and then thionyl chloride (422 mu, 5.81 mmol) was added. The reaction was stirred for a further 16 h and was then concentrated. The acyl intermediate that remained was dissolved in DMF (5 mL) under argon. A solution of 5,6-dichloro-lH-l ,3-benzodiazol-2-amine (587 mg, 2.90 mmol) in DMF (7 mL) and triethylamine (861 mu, 6.19 mmol) were added and the reaction mixture was stirred at room temperature for 4 h. The reaction mixture was diluted with water (10 mL) and extracted with EtOAc (2 x 15 mL). The combined organic extracts were washed with brine, dried (MgSO^, filtered and concentrated. The crude product was purified by silica chromatography. Further purification was carried out by trituration in DCM/MeOH and then pentane to afford the title compound (20 mg, 1percent).

344329-76-6, The synthetic route of 344329-76-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ACTIVE BIOTECH AB; WELLMAR, Ulf; LIBERG, David; EKBLAD, Maria; BAINBRIDGE, Marie; EAST, Stephen; HARGRAVE, Jonathan; PREVOST, Natacha; WO2015/177367; (2015); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1228779-96-1,3-Nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)benzenesulfonamide,as a common compound, the synthetic route is as follows.

1228779-96-1, Compound 17-3 was dissolved in dichloromethane, (3 eq) EDCI, (0.3 eq) DMAP was added, and stirred at room temperature for half an hour, then compound 1-5 (0.8 eq) was added.It is then reacted at room temperature for 6-8 hours. After the reaction is completed, the reaction is quenched with water.Extract three times with dichloromethane, and combine the organic phases with saturated brine.After drying anhydrous sodium sulfate, mix the sample on the column.CH2Cl2: MeOH = 100:1 – 30:1 gave compound S17.

As the paragraph descriping shows that 1228779-96-1 is playing an increasingly important role.

Reference£º
Patent; Chinese Academy Of Sciences Shanghai Pharmaceutical Institute; Zhang Ao; Tan Wenfu; Liu Xiaohua; Huang Wenjing; Zhang Yu; Yang Jun; (37 pag.)CN110143974; (2019); A;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1240390-36-6,tert-Butyl ((3R,4R)-4-aminotetrahydro-2H-pyran-3-yl)carbamate,as a common compound, the synthetic route is as follows.

Step 2 {(3R,4R)-4-[7-(Pyrazolo[1,5-a]pyridine-3-ylcarbamoyl)-thieno[3,2-d]pyrimidin-2-ylamino]-tetrahydro-pyran-3-yl}-carbamic acid tert-butyl ester To a solution of 2-chloro-thieno[3,2-d]pyrimidine-7-carboxylic acid pyrazolo[1,5-a]pyrimidin-3-ylamide (0.154 g, 0.466 mmol) and tert-butyl (3R,4R)-4-aminotetrahydro-2H-pyran-3-ylcarbamate (0.111 g, 0.513 mmol) in dioxane (4 mL) was added diisopropylethylamine (0.244 mL, 1.4 mmol). The reaction mixture was heated at 120 C. overnight. The reaction mixture was cooled and then diluted with dichloromethane, washed with aqueous sodium carbonate, then brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. The residue obtained was then purified by chromatography (silica, 40 g, 0 to 15% MeOH in dichloromethane) to give {(3R,4R)-4-[7-(pyrazolo[1,5-a]pyridine-3-ylcarbamoyl)-thieno[3,2-d]pyrimidin-2-ylamino]-tetrahydro-pyran-3-yl}-carbamic acid tert-butyl ester (0.137 g, 0.268 mmol, 57%) as a yellow solid. LCMS m/z [M+H]=511.

1240390-36-6, 1240390-36-6 tert-Butyl ((3R,4R)-4-aminotetrahydro-2H-pyran-3-yl)carbamate 68077633, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Patent; Hoffmann-La Roche Inc.; Chen, Shaoqing; Hermann, Johannes Cornelius; Le, Nam T.; Lucas, Matthew C.; Padilla, Fernando; US2013/178460; (2013); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics