Heterocyclic Building Blocks-Tetrahydropyran

101691-65-0, (Tetrahydro-2H-pyran-4-yl)methyl 4-methylbenzenesulfonate is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of sodium hydride (60 wt.% in mineral oil, 15.74 mg) in DMF (0.7 mL) was added to a solution of tert-butyl 2-chloro-5-(5-chloro-2-fluoropyridin-4- yl)phenylcarbamate (213 mg, 0.596 mmol) in DMF (0.70 mL) at 0 C. The resulting mixture was stirred at 0 C for 30 min. To this stirred mixture was then added(tetrahydro-2H-pyran-4-yl)methyl 4-methylbenzenesulfonate (161 mg, 0.596 mmol) in one portion. The mixture was warmed to 40 C and maintained at this temperature for 16 hrs. The reaction mixture was diluted with EtOAc, washed with IN aqueous sodium hydroxide solution, water and brine, dried over sodium sulfate, filtered off and concentrated under reduced pressure. The residue was purified by preparative TLC [silica gel, 1 mm; EtO Ac heptane = 15/85] providing [2-chloro-5-(5-chloro-2-fluoro- pyridin-4-yl)-phenyl]-(tetrahydro-pyran-4-ylmethyl)-carbamic acid tert-butyl ester (176 mg) as a colorless oil. LCMS (m/z): 355.0/356.9 [M+H, loss of t-Bu]; Rt = 1.21 min.

The synthetic route of 101691-65-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; NOVARTIS AG; PFISTER, Keith B; SENDZIK, Martin; WO2011/26917; (2011); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

1172623-99-2, tert-Butyl ((2R,3S)-2-(2,5-difluorophenyl)-5-hydroxytetrahydro-2H-pyran-3-yl)carbamate is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

1H (11.53 g, 35.03 mmol) was dissolved in dichloromethane (130 ml), and cooled to 0C. Dess-Martin periodinane(29.72 g, 70.06 mmol) was added in batches to the reaction solution, which was allowed to warm spontaneouslyto room temperature and undergo reaction for 4 hours. The temperature was lowered to 0C, and a saturated sodiumbicarbonate solution (60 ml) was added dropwise to the reaction solution, followed by stirring for 20 min and filtration.The filtrate was allowed to settle and be partitioned, and the aqueous phase was extracted with methyl t-butyl ether (60ml33). The organic phases were combined, washed with a saturated sodium bicarbonate solution (30 ml32), dried byaddition of anhydrous sodium sulfate thereto, filtered, concentrated, and separated by column chromatography (petroleumether/ethyl acetate (v/v) = 10:1 to 4:1), to obtain a white crystalline powder 1I (10.85 g, yield 94.7%).MS m/z (ESI):272.0 [M-55];1H NMR (400 MHz, DMSO-d6): delta7.29 – 7.13 (m, 4H), 4.77 – 4.75 (d, 1H), 4.22-4.02(m, 3H), 2.75-2.70 (m, 2H), 1.23 (s, 9H).

1172623-99-2 tert-Butyl ((2R,3S)-2-(2,5-difluorophenyl)-5-hydroxytetrahydro-2H-pyran-3-yl)carbamate 86713019, aTetrahydropyrans compound, is more and more widely used in various.

Reference£º
Patent; Sichuan Haisco Pharmaceutical Co., Ltd.; ZHANG, Chen; WANG, Jianmin; LI, Caihu; WEI, Yonggang; (64 pag.)EP3159344; (2017); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

624734-17-4, 3-Methoxydihydro-2H-pyran-4(3H)-one is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Intermediate 46b3-Methoxy-tetrahydro-pyran-4-one (1 g, 7.68 mmol), (R)-(+)-l-phenylethylamine (0.99 ml, 7.68 mmol) and Raney-Nickel (200 mg) in 10 ml dry ethanol were stirred under a hydrogen atmosphere (5 bar) for 15 days. The reaction mixture was diluted with 20 ml of methanol and 20 ml of tetrahydrofurane, stirred for 15 minutes, filtered on a celite pad and concentrated under vacuum. The crude product was loaded on a SCX cartridge (5Og). The cartridge was washed with methanol and the desired product was eluted with a 7 M solution of ammonia in methanol. The basic organic phase was concentrated under vacuum and the crude product obtained was purified by flash chromatography (dichloromethane/methanol= 98/2%) to obtain 710 mg (3.02 mmol) of the desired product as single stereoisomer (diastereoisomeric purity confirmed and relative cis stereochemistry assigned by NMR).

624734-17-4 3-Methoxydihydro-2H-pyran-4(3H)-one 23533610, aTetrahydropyrans compound, is more and more widely used in various.

Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; EBEL, Heiner; FRATTINI, Sara; GIOVANNINI, Riccardo; HOENKE, Christoph; TRIESELMANN, Thomas; TIELMANN, Patrick; SCHEUERER, Stefan; HOBBIE, Silke (Marie Katrin); WO2010/70032; (2010); 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.

The mixture of 3- ((1H-pyrrolo [2, 3-b] pyridin-5-yl) oxy) -4′- (2- (2-cyclopropylphenyl) pyrrolidin-1-yl) -2′, 3′, 4′, 5′-tetrahydro- [1, 1′-biphenyl] -4-carboxylic acid (700 mg, 1.34 mmol), triethylamine (106 mg, 4.05 mmol), 2- (7-azabenzotriazol-1-yl) -N, N, N’, N’-tetramethyluronium hexafluorophosphate (616 mg, 1.62 mmol) in DCM (10 mL) was stirred for 2 hours at room temperature. To the reaction mixture was added 3-nitro-4- (((tetrahydro-2H-pyran-4-yl) methyl) amino) benzenesulfonamide (512 mg, 1.62 mmol) and DMAP (17 mg, 0.14 mmol) and stirred overnight. The reaction mixture was washed with brine, dried over Na 2SO 4 and concentrated in vacuo, then purified by chromatography column on silica (eluent: DCM/MeOH = 50/1 to 15/1) to afford a crude product (490 mg). The crude product was purified with Pre-HPLC to give the product (1.65 mg, 1.26%). 1H NMR (400 MHz, DMSO-d 6) delta ppm: 12.25 (br, 1H), 11.68 (br, 1H), 8.51 (m, 2H), 7.99 (s, 1H), 7.79 (d, J = 12.0 Hz, 1H), 7.61-7.47 (m, 4H), 7.28-7.07 (m, 5H), 6.73 (s, 1H), 6.37 (s, 1H), 5.99-5.85 (m, 1H), 5.32-5.28 (m, 1H), 3.85 (d, J = 8.0 Hz, 2H), 3.75-3.51 (m, 2H), 3.22 (m, 5H), 2.42-1.97 (m, 8H), 1.86 (s, 2H), 1.73 (s, 1H), 1.61-1.57 (m, 2H), 1.45-1.37 (m, 1H), 1.23 (m, 2H), 1.07-0.93 (m, 2H), 0.71-0.59 (m, 2H). MS (ESI, m/e) [M+1] + 817.2.

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

Reference£º
Patent; BEIGENE, LTD.; GUO, Yunhang; XUE, Hai; WANG, Zhiwei; SUN, Hanzi; (493 pag.)WO2019/210828; (2019); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

110238-91-0, Methyl tetrahydro-2H-pyran-4-carboxylate is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 1: Synthesis of (tetrahydro-2H-pyran-4-yl) methanol: To a stirred solution of LAH (1M in THF, 20.8 mL, 20.82 mmol) in dry THF (50 mL) at 0 C, methyl tetrahydro-2H-pyran-4-carboxylate (5 g, 34.7 mmol) was added under nitrogen atmosphere. The resulting reaction mixture was stirred at rt for 3 h. The progress of the reaction was monitored by TLC. Upon completion the reaction was quenched with water and with 15% aq. NaOH. The precipitated solid was filtered through a bed of celite and the residue was washed with THF. The filtrate was concentrated under reduced pressure to afford the title compound (3.9 g, 97%) which was used in the subsequent step without further purification.

The synthetic route of 110238-91-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; EPIZYME, INC.; CAMPBELL, John Emmerson; WO2015/10078; (2015); A2;,
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.388109-26-0,Ethyl 3-oxotetrahydro-2H-pyran-4-carboxylate,as a common compound, the synthetic route is as follows.

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).

388109-26-0 Ethyl 3-oxotetrahydro-2H-pyran-4-carboxylate 21362493, aTetrahydropyrans compound, is more and more widely used in various.

Reference£º
Patent; Metcalf, Brian W.; Li, Zhe; US2014/275152; (2014); 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.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-(4-methyl-cyclohexa-1,5-dienylcarbamoyl)-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 p-tolylamide (0.106 g, 0.349 mmol) and tert-butyl (3R,4R)-4-aminotetrahydro-2H-pyran-3-ylcarbamate (0.113 g, 0.524 mmol) in dioxane (4 mL) was added diisopropylethylamine (0.183 mL, 1.05 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 50% ethyl acetate in hexanes) to give {(3R,4R)-4-[7-(4-methyl-cyclohexa-1,5-dienylcarbamoyl)-thieno[3,2-d]pyrimidin-2-ylamino]-tetrahydro-pyran-3-yl}-carbamic acid tert-butyl ester (0.085 g) as a yellow solid. LCMS m/z [M+H]=484.

The synthetic route of 1240390-36-6 has been constantly updated, and we look forward to future research findings.

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

1768-64-5, 4-Chlorotetrahydropyran is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

STEP A: Preparation of (2-{[(3,5-bis-trifluoromethyl-benzyl)-(2-methyl-2H-tetrazol-5-yl)-amino]-methyl}-4-trifluoromethyl-phenyl)-(tetrahydro-pyran-4-yl)-methanol To a suspension of magnesium in THF was added iodine followed by 4-chlorotetrahydropyran in THF at 65 C. Small amount of methylmagnesium bromide (3 drops) was added to initiate the reaction. The mixture was stirred at 65 C. for 1.5 hours, cooled to room temperature. 2-{[(3,5-Bis-trifluoromethyl-benzyl)-(2-methyl-2H-tetrazol-5-yl)-amino]-methyl}-4-trifluoromethyl-benzaldehyde in THF was treated with trimethylsilyl chloride and stirred at room temperature for 1 hour. The Grignard was then added to the aldehyde in THF at 0 C. via syringe. The mixture was stirred at 0 C. for 1.5 hours, quenched with saturated aqueous ammonium chloride and extracted with ethyl acetate. Combined organic layers were washed with brine, dried over sodium sulfate, and concentrated in vacuo. The residue was purified by chromatography over 25+S Biotage silica column (eluted with 0-50% ethyl acetate in hexanes) to afford the title compound as a pale yellow foam (91.6 mg, 52%). 1H NMR (400 MHz, CDCl3) delta ppm 1.07 (d, J=13.28 Hz, 1H) 1.27-1.37 (m, 1H) 1.40-1.52 (m, 1H) 1.77-1.89 (m, 2H) 2.51 (s, 1H) 3.19-3.34 (m, 2H) 3.86 (dd, J=11.14, 3.53 Hz, 1H) 3.99 (dd, J=11.62, 3.73 Hz, 1H) 4.18 (s, 3H) 4.68-4.83 (m, 4H) 4.88 (d, J=15.35 Hz, 1H) 7.34 (s, 1H) 7.55 (s, 2H) 7.64 (s, 2H) 7.77 (s, 1H). MS (ES+) Calc: 597.2, Found: 598.4 (M+1). The racemic alcohol mixture was separated by chiral chromatography using preparative HPLC (Column: Chiralcel OJ; Dimension: 5 cm*50 cm; Mobile phase: 95/5 heptane/ethanol with 0.1% DEA, Flow rate: 120 mL/minutes). The expected preparative retention times for the two enantiomers are 26 minutes (Enantiomer 1) and 36 minutes (Enantiomer 2). Enantiomer 1: MS Calc: 597.2, Found: 598.4; 100% ee. Enantiomer 2: MS Calc: 597.2, Found: 598.4; 100% ee

The synthetic route of 1768-64-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Pfizer Inc; US2007/213371; (2007); 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.

(0074) Compound 1E (115 mg), Compound 1F (67 mg), 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide hydrochloride (82 mg), and 4-dimethylaminopyridine (26 mg) were stirred in CH2Cl2 (3 ml) for 24 hours. The reaction was cooled and chromatographed on silica gel with 0-5% methanol/ethyl acetate. 1H NMR (300 MHz, dimethylsulfoxide-d6) delta 11.48 (brs, 1H), 8.34 (br s, 1H), 8.31 (m, 1H), 7.90 (d, 1H), 7.68 (m, 1H), 7.58 (m, 2H), 7.46 (m, 4H), 7.35 (m, 2H), 7.21 (dd, 1H), 6.76 (m, 4H), 6.28 (m, 2H), 3.02 (m, 2H), 2.89 (m, 4H), 2.80 (m, 4H), 2.40 (m, 3H), 1.59 (m, 2H), 1.25 (m, 4H), 0.87 (m, 2H).

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.

Reference£º
Patent; AbbVie Inc.; Catron, Nathaniel; Lindley, David; Miller, Jonathan M.; Schmitt, Eric A.; Tong, Ping; US10213433; (2019); B2;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics