Tag: M.W:100-200

85064-61-5,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.85064-61-5,Tetrahydropyranyl-4-acetic acid,as a common compound, the synthetic route is as follows.

A solution of sodium hydroxide (15.9 g, 44.06 mmol) in water (150 ml) was added dropwise to a solution of ethyl 2-(tetrahydro-2H-pyran-4-yl)acetate (15 g, 8.81 mmol) in methanol (150 ml) at a temperature of 0 ¡ãC or below, and the mixture was stirred at room temperature for 15 hr. The solvent of the reaction mixture was removed by distillation under reduced pressure, and the water layer was adjusted to pH 3 by the addition of 1 M hydrochloric acid and was extracted with ethyl acetate. The organic layer was washed with saturated brine and was dried over anhydrous sodium sulfate, and the filtrate was concentrated under reduced pressure to give a corresponding acid as a colorless solid (12.0 g, 94percent). This compound was used in the next step without further purification. Benzyl bromide (14.3 g, 83.33 mmol) was added dropwise to a suspension of this compound (10.0 g, 69.44 mmol) and anhydrous potassium carbonate (28.8 g, 208.3 mmol) in acetonitrile (100 ml) at room temperature, and the mixture was refluxed for 48 hr. The solvent of the mixture was removed by distillation under reduced pressure, the residue was diluted with water and was extracted with dichloromethane, and the organic layer was dried over anhydrous sodium sulfate. The filtrate was concentrated under reduced pressure, and the residue was chromatographed on silica gel column (hexane:ethyl acetate = 9:1) to give the tile compound as an oil (12.0 g, yield 75percent). 1H-NMR (400 MHz, CDCl3): delta (ppm) 7.39-7.34 (m, 5H), 5.12 (s, 2H), 3.95-3.92 (m, 2H), 3.42-3.36 (m, 2H), 2.30 (d, J = 7.2 Hz, 2H), 2.09-1.99 (m, 1H) 1.64-1.61 (m, 2H), 1.39-1.29 (m, 2H); MS (ESI): m/z 234 (M+).

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

Reference£º
Patent; Meiji Seika Pharma Co., Ltd.; MORINAKA, Akihiro; MAEBASHI, Kazunori; IDA, Takashi; HIKIDA, Muneo; YAMADA, Mototsugu; ABE, Takao; EP2737900; (2014); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

25637-16-5, 4-Bromotetrahydropyran is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a cooled solution of 79 (0.5 g, 1.17 mmol, 1.0eq), and 79.1 (0.386 g, 2.34 mmol, 1.2 eq) inAcetonitrile (15mE) at 0 C. was added Cesium carbonate (0.9 g, 2.92mmol, 2.5 eq). The reaction was stirred at 70 C. for 2 h. Afier completion of reaction, reaction mixture was transferred into water and product was extracted with ethyl acetate. Organic layer was combined and dried over sodium sulphate and concentrated under reduced pressure to obtain crude material. This was further purified by column chromatography and compound was eluted in 20% ethyl acetate in hexane to obtain pure 79.2. (0.150 g, 25.06%). MS (ES):mlz 511.24 [M+H]., 25637-16-5

25637-16-5 4-Bromotetrahydropyran 13349654, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Patent; Nimbus Lakshmi, Inc.; Masse, Craig E.; Greenwood, Jeremy Robert; Mondal, Sayan; Cowen, Scott D.; McLean, Thomas H.; (624 pag.)US2019/31664; (2019); 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.1768-64-5,4-Chlorotetrahydropyran,as a common compound, the synthetic route is as follows.

Under nitrogen atmosphere, magnesium (6.05 g, 249 mmol) was suspended in THF (30 ml). A catalytic amount of iodine and dibromoethane (0.4 ml) were added. The mixture was heated to 60C and 4-chlorotetrahydro-2H-pyran (5 g, 41.5 mmol) in THF (5 ml) was added dropwise. The mixture was stirred at 60C for 2.5 h. The mixture was cooled to 0C and N-[[5-benzyloxy-l-[2- [tert-butyl(dimethyl)silyl]oxyethyl]-4-oxo-2-pyridyl]methylene]-2-methyl-propane-2- sulfinamide (Intermediate 5, 6.78 g, 13.82 mmol) in THF (20 ml) was added. The resulting mixture was stirred at rt for 45 min. The reaction was quenched with ammonium chloride solution and extracted with EtOAc (2x). The combined organic layers were washed with brine, dried with sodium sulfate and concentrated to afford the title intermediate as an orange gum (8.7 g). Purification by chromatography (Si02, 10% MeOH in DCM) gave the title intermediate as an orange oil (7.3 g, 56 %). MS, ES+ m/z, 577 (M+H)+.

1768-64-5, 1768-64-5 4-Chlorotetrahydropyran 137202, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Patent; LIEBER INSTITUTE FOR BRAIN DEVELOPMENT; BARROW, James; ERNST, Glen; SWINNEN, Dominique; MONTEL, Florian; DEFAYS, Sabine; (224 pag.)WO2017/91818; (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.29943-42-8,Dihydro-2H-pyran-4(3H)-one,as a common compound, the synthetic route is as follows.

Example 4 N-(4-Ethoxy-6-{4-oxo-2-[(tetrahydro-pyran-4-ylmethyl-amino)-4H-thiazol-5-ylidenemethyl}-quinolin-2-yl]-acetamide a) Preparation of c-(tetrahydro-pyran-4-yl)-methylammonium acetate A cold (ice water bath) solution of tetrahydro-4H-pyran-4-one (7.5 g, 75 mmol) and tosylmethylisocyanide (16.05 g, 82.4 mmol) in DME (125 ml) was treated with a suspension of potassium t-butoxide (16.8 g, 150 mmoles) in t-butyl alcohol (250 ml). The reaction mixture was stirred at room temperature for 31/2 hours, and then diluted with ether (250 ml). The mixture was successively washed with water and brine, then dried over sodium sulfate, filtered, and concentrated. The crude product was purified by short path distillation under high vacuum to give the nitrile as colorless oil (2.98 g). This material was dissolved in 1M borane/tetrahydrofuran (THF) (134 ml, 134 mmol) and stirred at rt overnight. Excess borane was quenched by adding methanol (rt, 1 h), and the mixture was concentrated to dryness. The residue was dissolved in 4N HCl/dioxane, stirred at rt for 1 h and then concentrated under reduced pressure. The solid residue was triturated with ether and collected by suction filtration. A suspension of this material (1.81 g, 11.9 mmol) in THF (30 ml) was treated with 1N NaOH (11.9 ml, 11.9 mmol) at rt for ? h. The THF was removed by distillation and the aqueous solution was saturated with NaCl then extracted with dichloromethane. The organic layer was dried over sodium sulfate and concentrated under reduced pressure. The residue was treated with acetic acid (0.68 ml, 11.9 mmol) to provide, after drying in a vacuum oven, c-(tetrahydro-pyran-4-yl)-methylammonium acetate (1.71 g).

29943-42-8, 29943-42-8 Dihydro-2H-pyran-4(3H)-one 121599, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Patent; Chen, Li; Chen, Shaoqing; Michoud, Christophe; US2006/63804; (2006); 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.125552-89-8,4-(Bromomethyl)tetrahydropyran,as a common compound, the synthetic route is as follows.

A suspension solution of152F (30 mg, 0.089 mmol), 4-(bromomethyl)tetrahydropyran (16.73 mg, 0.093 mmol)and C52CO3 (43.5 mg, 0.133 mmol) in DMF (1 mL) was heated to 120 C for 20 mm and 140 C for 1 h under microwave conditions. The reaction mixture was concentrated invacuo. Water (2 mL) was added and stirred for 5 minutes. The solid was collected as the crude product which was purified by column chromatography on the Isco system to yield152G (25 mg, 65% yield). MS(ESI) m/z 435.2 (M+H)., 125552-89-8

The synthetic route of 125552-89-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BRISTOL-MYERS SQUIBB COMPANY; HART, Amy C.; PITTS, William J.; MASTALERZ, Harold; GUO, Junqing; BROWN, Gregory D.; (148 pag.)WO2016/100166; (2016); 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.23462-75-1,Dihydro-2H-pyran-3(4H)-one,as a common compound, the synthetic route is as follows.

Dihydro-2//-pyran-3(4H)-one (100 mg, 1.00 mmol), /er/-butyl carbazate (145 mg, 1.10 mmol, Ll equiv) and acetic acid (0.280 niL, 4.99 mmol, 5 equiv) were combined in 1 ,2-dichloroethane(3 raL), stirred at ambient temperature for 10 minutes and treated with sodium triacetoxyborohydride (296 mg, 1,34 mmol, 1.4 equiv). After stirring for 1 hour, the mixture was poured into water and extracted with ethyl acetate (3 x 50 niL), The combined organic extracts were dried with sodium sulfate, filtered and concentrated in vacuo to provide the titled compound., 23462-75-1

23462-75-1 Dihydro-2H-pyran-3(4H)-one 90109, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Patent; MERCK SHARP &; DOHME CORP.; BESHORE, Douglas, C.; KUDUK, Scott, D.; WO2010/123716; (2010); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

23462-75-1, Dihydro-2H-pyran-3(4H)-one is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 1 Methylmaganesium bromide (1.831 mL, 5.49 mmol) was added dropwise via syringe to a solution of dihydro-2H-pyran-3(4H)-one (500 mg, 4.99 mmol) in Diethyl ether (50 mL) at -20 C. and stirred at this temp for 1 hr before warming up to RT. The reaction was quenched with sat. ammonium chloride and extracted with ether. The organic layer was washed with brine, collected, dried over MgSO4, filtered and partially evaporated to give the crude product 3-methyltetrahydro-2H-pyran-3-ol (480 mg, 83% yield) as an oil. 1H NMR (400 MHz, CHLOROFORM-d) delta 3.90-3.81 (m, 1H), 3.55-3.50 (m, 1H), 3.40 (td, J=11.3, 2.8 Hz, 1H), 3.31 (d, J=11.3 Hz, 1H), 2.16 (br. s., 1H), 1.94-1.81 (m, 1H), 1.78-1.69 (m, 1H), 1.59-1.47 (m, 2H), 1.18-1.11 (m, 3H)., 23462-75-1

23462-75-1 Dihydro-2H-pyran-3(4H)-one 90109, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Patent; Bristol-Myers Squibb Company; Hiebert, Sheldon; Rajamani, Ramkumar; Sun, Li-Qiang; Mull, Eric; Gillis, Eric P.; Bowsher, Michael S.; Zhao, Qian; Meanwell, Nicholas A.; Renduchintala, Kishore V.; Sarkunam, Kandhasamy; Nagalakshmi, Pulicharla; Babu, P. V. K. Suresh; Scola, Paul Michael; US2013/115190; (2013); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

40191-32-0, Tetrahydro-2H-pyran-4-carbonyl chloride is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,40191-32-0

Example 21Synthesis of N-(3-{3-[4-(1-aminocyclobutyl)phenyl]-2-(2-aminopyridin-3-yl)-3H-imidazo[4,5-b]pyridin-5-yl}phenyl)tetrahydro-2H-pyran-4-carboxamide hydrochlorideStep 1Synthesis of N-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]tetrahydro-2H-pyran-4-carboxamideTo a solution of 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (220 mg) and triethylamine (0.182 mL) in N,N-dimethylacetamide (1.5 mL) chilled to 0 C. was added tetrahydro-2H-pyran-4-carbonyl chloride (prepared from tetrahydro-2H-pyran-4-carboxylic acid (156 mg) and oxalyl chloride (0.15 mL) in dichloromethane (2.5 mL)) dropwise. After being stirred at room temperature for 1 h, the reaction mixture was diluted with ethyl acetate and washed with 1 M citric acid aqueous solution (3 times) then brine. The organics were dried over anhydrous sodium sulfate and concentrated under reduced pressure. Purification by column chromatography (10-100% ethyl acetate in hexanes) gave the product (267 mg, 81%). 1H-NMR (400 MHz, CDCl3) delta: 7.92-7.87 (m, 1H), 7.68-7.66 (m, 1H), 7.57-7.53 (m, 1H), 7.35 (t, 1H, J=7.6 Hz), 7.14 (br s, 1H), 4.10-4.03 (m, 2H), 3.46 (ddd, 2H, J=11.5, 11.5, 2.8 Hz), 2.51-2.42 (m, 1H), 1.97-1.80 (m, 4H), 1.34 (s, 12H); LCMS: 332 [M+H].

As the paragraph descriping shows that 40191-32-0 is playing an increasingly important role.

Reference£º
Patent; ArQuele, Inc.; US2012/329791; (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.127956-11-0,Methyl 4-oxotetrahydro-2H-pyran-3-carboxylate,as a common compound, the synthetic route is as follows.

Step 2: 5-(Methoxycarbonyl)-tetrahydro-4-oxo-2H-pyran-3-carboxylic acid; Methyl tetrahydro-4-oxo-2H-pyran-3-carboxylate (18.6 mmol) is heated with a magnesium methyl carbonate solution (1.94M; 80 mL) at 120-1300C for 6 hours. After hydrolysis the crude product is extracted into ether, dried, and isolated. Crystallization from methanol gives the pure product. See Stiles, J. Am. Chem. Soc. 1959, 81, 2598.

127956-11-0, The synthetic route of 127956-11-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SYNDAX PHARMACEUTICALS, INC.; WO2009/49018; (2009); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics

40191-32-0,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.40191-32-0,Tetrahydro-2H-pyran-4-carbonyl chloride,as a common compound, the synthetic route is as follows.

Step 2 To a solution of 6-benzyl-4-((S)-pyrrolidin-3-yloxy)-5,6,7,8-tetrahydro-pyrido[4,3-d]pyrimidine (420 mg, 1.35 mmol) in 4ml_ of CH2CI2 was added tetrahydro-pyran-4-carbonyl chloride (0.210 mL, 1.637 mmol) and Et3N (0.380 mL, 2.73 mmol). The reaction mixture was stirred at room temperature for 30 min then was quenched with H20, extracted with CH2CI2, filtered and evaporated under vacuum. Purification by flash-chromatography on silica gel (CH2CI2 / MeOH 95/5) gave [(S)-3-(6-benzyl-5,6,7,8-tetrahydro-pyrido[4,3-d]pyrimidin-4-yloxy)-pyrrolidin-1-yl]-(tetrahydro-pyran-4-yl)-methanone (420 mg, 73% yield) as a yellow foam. 1H NMR (400 MHz, DMSO-d6, 298K) delta ppm 1.37-1.64 (m, 4H) 1.95-2.29 (m, 2H) 2.56-2.83 (m, 4H) 3.28-3.91 (m, 13H) 5.54-5.68 (m, 1 H) 7.24-7.36 (m, 5H) 8.54-8.59 (m, 1 H). LCMS: [M+H]+= 423.6, Rt(7)= 0.68.

As the paragraph descriping shows that 40191-32-0 is playing an increasingly important role.

Reference£º
Patent; NOVARTIS AG; COOKE, Nigel Graham; FERNANDES GOMES DOS SANTOS, Paulo Antonio; FURET, Pascal; HEBACH, Christina; HOeGENAUER, Klemens; HOLLINGWORTH, Gregory; KALIS, Christoph; LEWIS, Ian; SMITH, Alexander Baxter; SOLDERMANN, Nicolas; STAUFFER, Frederic; STRANG, Ross; STOWASSER, Frank; TUFILLI, Nicola; VON MATT, Anette; WOLF, Romain; ZECRI, Frederic; WO2013/88404; (2013); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics