Category: Tetrahydropyrans

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1197-66-6,2,2,6,6-Tetramethyl-2H-3,5,6-trihydropyran-4-one,as a common compound, the synthetic route is as follows.

Step 3. 2,2,6,6-Tetramethyl-4-trimethylsilanylethynyl-tetrahydro-pyran-4-ol To a solution of ethynyl-trimethyl-silane (5.5 mL, 38.4 mmol) in dry THF (25 mL) was added n-BuLi (32 mL, 38.4 mmol) at -78 C. and the mixture was stirred at that temperature for 45 min followed by addition of 2,2,6,6-tetramethyl-tetrahydro-pyran-4-one (5.0 g, 32 mmol) in dry THF (25 mL) at -78 C. The mixture was stirred for 1 h and then quenched with saturated NH4Cl solution and extracted with ethyl acetate (3*100 mL). The combined organic extract was washed with water and brine solution, dried over Na2SO4, filtered, and concentrated under reduced pressure to afford the product as sticky white solid. Crude product was forwarded for next stage without purification. Yield: 8.0 g, crude.

1197-66-6 2,2,6,6-Tetramethyl-2H-3,5,6-trihydropyran-4-one 11829691, aTetrahydropyrans compound, is more and more widely used in various.

Reference£º
Patent; Janssen Pharmaceutica NV; Ahmad, Ishtiyaque; Bakthavatchalam, Rajagopal; Battula, Sivaramakrishna; Gijsen, Henricus Jacobus, Maria; Wall, Mark; US2015/51225; (2015); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

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

Into a 8-mL round-bottom flask, was placed a solution of 4-(4-[[2-(4-chlorophenyl)- 4,4-dimethylcyclohex-l-en-l-yl]methyl]piperazin- l-yl)-2-[l3-oxa-2,4,l0- triazatricyclo[7.4.0.0A[3,7]]trideca-l,3(7),5,8-tetraen-l0-yl]benzoic acid (35 mg, 0.06 mmol, 1.00 equiv) in dichloromethane (5 mL), 4-dimethylaminopyridine (27.8 mg, 0.23 mmol, 4.00 equiv), 3-nitro-4-[(oxan-4-ylmethyl)amino]benzene-l-sulfonamide (21.7 mg, 0.07 mmol, 1.20 equiv), EDCI (22 mg, 0.11 mmol, 2.00 equiv). The resulting solution was stirred for overnight at room temperature. The resulting mixture was concentrated under vacuum. The crude product was purified by Prep-HPLC with the following conditions (Waters-2767): Column, X-bridge RP18, 5um, l9* l00mm; mobile phase, 0.03% ammonia in water (0.03% NH4HC03 & NH40H ) and CH3CN (32% CH3CN up to 52% in 6 min); Detector, UV 254 nm. This resulted in 28.3 mg (54%) of 4-(4-[[2-(4-chlorophenyl)-4,4-dimethylcyclohex-l-en- l-yl]methyl]piperazin-l-yl)-N-([3-nitro-4-[(oxan-4-ylmethyl)amino]benzene]sulfonyl)-2-[l3- oxa-2,4,l0-triazatricyclo[7.4.0.0A[3,7]]trideca-l,3(7),5,8-tetraen-l0-yl]benzamide as a yellow solid. LC-MS-: (ES, m/z ): (ES, m/z): M+l=909, R.T= 1.52 min. The measurements of the retention were done with a reversed phase column (C18). Shimadzu LCMS 2020; 50*3.0 Kinetex 2.6u XB-C18 , 2.6 microm; Eluent A: water (0.05 % TFA); Eluent B: Acetonitrile; linear gradient. H-NMR: (CDCl3, 300 MHz) d: 8.70 (s, 1H), 8.46 (m, 2 H), 8.10-8.06 (m, 1 H), 7.89-7.60 (m, 1 H), 7.10 (s, 1 H), 6.94-6.71 (m, 5 H), 6.49 (s, 1 H), 6.16 (s, 1 H), 4.70- 4.65 (m, 2 H), 4.00-4.10 (m, 2 H), 3.67-3. l9(m, 7 H), 3.20-3.00(m, 4 H), 2.78(s, 1 H), 2.58- 2.52(m, 2 H), 2.27-2. l7(m, 3 H), 2.05-l.98(m, 4 H), 1.74-1.70 (m, 3 H), 1.55-1.40 (m, 3H), 0.98 (s, 6H).The measurements of the NMR spectra were done with BrukerAvancelll HD 300MHzwith a probe head of BBOF

The synthetic route of 1228779-96-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; NEWAVE PHARMACEUTICAL INC.; CHEN, Yi; (475 pag.)WO2020/41406; (2020); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

85064-61-5, Tetrahydropyranyl-4-acetic acid is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 1: N-[6-(4-Morpholinyl)-3-pyridinyl]-2-(tetrahydro-2H-pyran-4-yl)-N-[(1-(at)[4- (trifluoromethyl)phenyl]methyl)-4-piperidinyl)methyl]acetamide; Oxalyl chloride (0.27ml, 3.05mmol) was added to a stirred solution of tetrahydro-2H- pyran-4-ylacetic acid (0.2g, 1.38mmol) in DCM (10ml). DMF (1 drop) was added and the reaction mixture stirred at room temperature for 1.5h then evaporated in vacuo to afford a colourless oil (1.17g). The crude acid chloride was dissolved in DCM (10ml) and added to a stirred solution of 6-(4-morpholinyl)-N-[(1-{[4-(trifluoromethyl)phenyl]methyl)-4- piperidinyl) methyl]-3-pyridinamine D5 (0.45g, 1.03mmol) and triethylamine (0.58ml, 4.12mmol) in DCM (10ml). After 24h the mixture was washed with saturated sodium hydrogen carbonate, the organic layer separated by passage through a phase separation cartridge and evaporated in vacuo. Chromatography on silica gel eluting with 50-100% ethyl acetate in pentane gradient afforded the title compound as an orange gum (0.47g). A 70mg portion was dissolved in 1:1 DMSO/MeCN (0.9ml) and purified by mass directed autoprep hplc on a Waters C18 5muM column 8(id 19 x 100mm) eluting with 5 – 99% MeCN in water gradient containing 0.1 % formic acid. Fractions containing the desired material were passed through a 2g SCX column, the column washed with methanol (30ml) and eluted with 1 N ammonia in methanol to afford the title compound as a colourless gum (0.05g). Mass Spectrum (AP+): Found 561 (MH+). C30H39F3N403 requires 560.

The synthetic route of 85064-61-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; GLAXO GROUP LIMITED; WO2005/103038; (2005); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

4677-18-3, 2-(Tetrahydro-2H-pyran-4-yl)ethanol is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Intermediate 33: 2-(Tetrahydro-2/-/-pyran-4-yl)ethyl methanesulfonate To 2-(tetrahydro-2H-pyran-4-yl)ethanol (3,3g) in dry dichloromethane (100 ml) at O0C and under nitrogen was added triethylamine (4.6 ml), followed by methanesulphonyl chloride (2.6 ml) dropwise over 5 minutes. The reaction was stirred until the ice in the bath melted and left overnight at room temperature. The reaction was washed with saturated aqueous sodium bicarbonate (40 ml). The organic layer was dried by passing through a hydrophobic frit and concentrated in vacuo to yield the title compound as a yellow oil (5.4g).1 H NMR (DMSO): 4.24 (2H, t), 3.82 (2H, m), 3.80 (3H, s), 3.27 (2H, m), 2.50 (5H, m), 1.60 (2H, m).

4677-18-3 2-(Tetrahydro-2H-pyran-4-yl)ethanol 17750944, aTetrahydropyrans compound, is more and more widely used in various.

Reference£º
Patent; SMITHKLINE BEECHAM CORPORATION; WO2008/101867; (2008); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

33821-94-2, 2-(3-Bromopropoxy)tetrahydro-2H-pyran is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

STEP A: Sodium hydride (60% mineral oil dispersion) (26.4 mg, 0.660 mmol) is added at 0C under nitrogen to the solution of (E)-2-amino-7-(4-fluoro-2-pyridin-3-yl-phenyl)-4-methyl-7,8-dihydro- 6H-quinazolin-5-one oxime (Intermediate 1) (0.2 g, 0.550 mmol) in anhydrous DMF (8 mL). After 2 min, 2-(3-bromopropoxy)tetrahydro-2H-pyrane (147 mg, 0.660 mmol) is added and the mixture is heated at 60C for 2 h. The suspension is diluted with H20 and extracted with EtOAc. The organic phase is dried over Na2S04, filtered and concentrated under reduced pressure. The residue is purified by flash column chromatography (eluent DCM/MeOH from 98/2 to 95/5) to give the expected compound (0.253 g, 0.5 mmol, Yield: 91%). LC-MS: method A, rt=l .28 min; (ES+), M+H+= 506.3 1H-NMR (DMSO-d6) delta (ppm): 8.57 (dd, J=4.84, 1.61 Hz, 1 H); 8.53 (dd, J=2.35, 0.88 Hz, 1 H); 7.76 (ddd, J=7.92, 2.35, 1.76 Hz, 1 H); 7.67 (dd, J=8.80, 5.58 Hz, 1 H); 7.45 (ddd, J=7.63, 4.70, 0.88 Hz, 1 H); 7.31 (td, J=8.80, 2.93 Hz, 1 H); 7.1 1 (dd, J=9.54, 2.79 Hz, 1 H); 6.74 (s, 2 H); 4.39-4.62 (m, 1 H); 4.11 (t, J=6.31 Hz, 2 H); 3.59-3.78 (m, 2 H); 3.32-3.48 (m, 2 H); 2.77-3.13 (m, 3 H); 2.55-2.69 (m, 2 H); 2.45 (s, 3 H); 1.87 (quin, J=6.46 Hz, 2 H); 1.27-1.79 (m, 6 H)

As the paragraph descriping shows that 33821-94-2 is playing an increasingly important role.

Reference£º
Patent; DAC SRL; AMICI, Raffaella; COLOMBO, Andrea; COURTNEY, Stephen Martin; MERCURIO, Ciro; MONTALBETTI, Christian Aldo Georges Napoleon; MORTONI, Annalisa; VARASI, Mario; WO2013/64919; (2013); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

4295-99-2, 4-Cyanotetrahydro-4H-pyran is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Synthesis of (4-methyltetrahvdro-2H-pyran-4-yl)methanaminePreparation of 4-methyltetrahydro-2H-pyran-4-carbonitrile To a solution of tetrahydro-2H-pyran-4-carbonitrile (2 g, 18.00 mmol) in tetrahydrofuran (10 mL) at 0 – 5 C was added slowly LHMDS (21.59 mL, 21.59 mmol). The mixture was stirred for 1.5 hrs at 0 C. lodomethane (3.37 mL, 54.0 mmol) was added slowly and stirring was continued for 30 min at ~0 C and then for ~2 hrs at room temperature. The mixture was cooled to 0 C and carefully diluted with 1 N aqueous hydrochloride solution (30 mL) and EtOAc (5 mL) and concentrated under reduced pressure. The residue was taken up in diethylether and the separated organic layer was washed with brine, dried over sodium sulfate, filtered off and concentrated under reduced pressure providing crude 4-methyltetrahydro-2H-pyran-4-carbonitrile (1.8 g) as an orange oil, which was directly used in the next reaction without further purification. LCMS (m/z): 126.1 [M+H]+; Retention time = 0.44 min.

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

Reference£º
Patent; NOVARTIS AG; ANTONIOS-MCCREA, William R.; BARSANTI, Paul A.; HU, Cheng; JIN, Xianming; LIN, Xiaodong; MARTIN, Eric J.; PAN, Yue; PFISTER, Keith B.; RENHOWE, Paul A.; SENDZIK, Martin; SUTTON, James; WAN, Lifeng; WO2012/101066; (2012); 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.873397-34-3,Tetrahydro-2H-pyran-3-carboxylic acid,as a common compound, the synthetic route is as follows.

Into a 8-mL round-bottom flask, was placed ethyl (S)-5-methyl-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine-8-carboxylate (from the second eluting isomer of Example 47 Step 5) (200 mg, 0.85 mmol, 1 equiv) in DMF (4 mL), HATU (388 mg, 1.02 mmol, 1.2 equiv), DIEA (330 mg, 2.55 mmol, 3 equiv) and oxane-3-carboxylic acid (166 mg, 1.28 mmol, 1.5 equiv). The resulting solution was stirred overnight at room temperature. The reaction was then quenched with water. The resulting solution was extracted with EtOAc (3¡Á5 mL). The combined organic layers were washed with brine (2¡Á5 mL), dried over anhydrous Na2SO4, filtered, and concentrated under vacuum. The residue was purified by silica gel chromatography (EtOAc/pet. ether, 1:3) to afford the racemic mixture of the title compounds as a yellow oil (150 mg). The racemate was separated by Chiral-Prep-HPLC (Column Chiralpak IC, 5 mum, 2¡Á25 cm; Mobile Phase A:hexanes; Mobile Phase B: EtOH; Gradient: 30percent B for 21 min; Flow rate: 20 mL/min; Detector, UV 254, 220 nm) to afford the single isomers of title compounds as yellow oils (first eluting isomer: 20 mg, 7percent yield; second eluting isomer: 20 mg, 7percent yield). MS: (ES, m/z): 348 [M+H]+.

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Reference£º
Patent; Forma Therapeutics, Inc.; Zheng, Xiaozhang; Ng, Pui Yee; Han, Bingsong; Thomason, Jennifer R.; Zablocki, Mary-Margaret; Liu, Cuixian; Davis, Heather; Rudnitskaya, Aleksandra; Lancia, JR., David; Bair, Kenneth W.; Millan, David S.; Martin, Matthew W.; (190 pag.)US2016/222028; (2016); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

693287-79-5, tert-Butyl 2-(tetrahydro-2H-pyran-4-yl)hydrazinecarboxylate is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Intermediate 23Tetrahydro-2H-pyran-4-ylhydrazine1,1-Dimethylethyl 2-(tetrahydro-2H-pyran-4-yl)hydrazinecarboxylate was added to 1,4-Dioxane (10 mL) followed by hydrochloric acid (4M in 1,4-Dioxane, 10 mL, 329 mmol). The reaction mixture was stirred at room temperature for 60 h. The reaction mixture was filtered to afford the product as a solid, 1.02 g. (72%). 1H NMR (400 MHz, CHLOROFORM-d) delta ppm 1.45 (qd, J=l 1.79, 4.29 Hz, 2 H), 1.81 – 2.01 (m, 2 H), 3.00 – 3.19 (m, 1 H), 3.20 – 3.35 (m, 2 H), 3.78 – 3.97 (m, 2 H), 6.5-9.5(br m, 3 H).

693287-79-5 tert-Butyl 2-(tetrahydro-2H-pyran-4-yl)hydrazinecarboxylate 45092245, aTetrahydropyrans compound, is more and more widely used in various.

Reference£º
Patent; GLAX0SMITHKLINE LLC; BURGESS, Joelle, Lorraine; JOHNSON, Neil, W.; KNIGHT, Steven, David; LAFRANCE, Louis, Vincent, III; MILLER, William, H.; NEWLANDER, Kenneth, Allen; ROMERIL, Stuart, Paul; ROUSE, Meagan, B.; SUAREZ, Dominic; TIAN, Xinrong; VERMA, Sharad, Kumar; WO2013/39988; (2013); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

5631-96-9, 2-(2-Chloroethoxy)tetrahydro-2H-pyran is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A reaction vessel is charged with tert-butyl 3-(4-hydroxyphenyl)-2,6-dioxopiperidine-1- carboxylate (1 equiv.), potassium carbonate (2 equiv.) and DMF (0.5 M). 2-(2- Chloroethoxy)tetrahydro-2H-pyran (1.1 equiv.) is added and the reaction is heated at 110 C for 12 hours. The reaction is then cooled to ambient temperature and concentrated. The residue is taken up in water and ethyl acetate and the layers separated. The aqueous layer is extracted with ethyl acetate (2x). The combined organic layer is washed with brine, dried over sodium sulfate, filtered and concentrated. The crude residue is used directly in the following reaction.

5631-96-9 2-(2-Chloroethoxy)tetrahydro-2H-pyran 254951, aTetrahydropyrans compound, is more and more widely used in various.

Reference£º
Patent; C4 THERAPEUTICS, INC.; PHILLIPS, Andrew, J.; NASVESCHUK, Chris, G.; HENDERSON, James, A.; LIANG, Yanke; HE, Minsheng; LAZARSKI, Kiel; VEITS, Gesine, Kerstin; VORA, Harit, U.; (794 pag.)WO2017/197046; (2017); 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.1172623-99-2,tert-Butyl ((2R,3S)-2-(2,5-difluorophenyl)-5-hydroxytetrahydro-2H-pyran-3-yl)carbamate,as a common compound, the synthetic route is as follows.

Step 6: Ru Oxidation to Provide 9; To a solution of the alcohol 8 (40.0 g, 121.4 mmol) in CH3CN (120 mL), AcOH (20 mL), and H2O (20 mL) was added a solution of RuCl3 (50.4 mg, 0.243 mmol) in H2O (40 mL) at 0 C. NaBrO3 (9.2 g, 60.7 mmol) was added in portions at 0 C. The resulting reaction mixture was stirred at 0 C. until a complete consumption of alcohol 8 was achieved by HPLC. H2O (600 mL) was added dropwise over 5 h at 0 C. The slurry was aged overnight at 0 C. The product was collected by filtration, washed with CH3CN/H2O=1/9 (200 mL¡Á2), and dried under vacuum to give 9. 9 has two rotomers in DMSO in about a 4:1 ratio at ambient temperature. For the major rotomer of 9: 1H NMR (500 MHz, DMSO-d6): delta 7.27 (m, 1H), 7.20 (m, 2H), 7.12 (d, J=9.2 Hz, 1H), 4.76 (d, J=9.5 Hz, 1H), 4.19 (d, J=16.1H), 4.10 (d, J=16.1 z, 1H), 4.05 (m, 1H), 2.76 (dd, J=16.4, 6.2 Hz, 1H), 2.71 (dd, J=16.4, 10.1 Hz, 1H), 1.20 (s, 9H). 13C-NMR (125 MHz, d6-DMSO): delta 205.4, 158.0 (d, J=236.9 Hz), 156.2 (dd, J=241.8, 1.8 Hz), 154.2, 127.8 (dd, J=16.0, 8.0 Hz), 116.6 (dd, J=25.2, 8.0 Hz), 116.2 (dd, J=23.4, 8.0 Hz), 115.2 (dd, J=24.0, 3.1 Hz), 77.9, 74.5, 73.6, 50.6, 44.1, 27.9.

The synthetic route of 1172623-99-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Xu, Feng; Kim, Mary M.; Kohmura, Yoshinori; Sladicka, Tricia; Rosen, Jonathan D.; Zacuto, Michael J.; US2009/187028; (2009); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics