Day: October 13, 2020

453-20-3, 3-Hydroxytetrahydrofuran is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

10492] To a solution of 235-1 ( 1.82 g, 10.0 mmol), tetrahydrofuran-3-ol (880 mg, 10.0 mmol) and PPh3 (2.62 g, 10.0 mmol) in THF (30 mL) at 0 C was added DIAD (2.02 g, 10.0 mmol) dropwise. The mixture was stirred at 0 C for 2 h, and the reaction was then quenched with sat. NaHC03 solution. The aqueous layer was extracted by DCM (3x). The combined organic layers were dried over MgSC>4, filtered and concentrated at low pressure. The residue was purified by flash column chromatography on silica gel to give 235-2 (2.4 g, 89.6%)., 453-20-3

As the paragraph descriping shows that 453-20-3 is playing an increasingly important role.

Reference£º
Patent; ALIOS BIOPHARMA, INC.; WANG, Guangyi; BEIGELMAN, Leonid; TRUONG, Anh; NAPOLITANO, Carmela; ANDREOTTI, Daniele; HE, Haiying; STEIN, Karin, Ann; WO2015/26792; (2015); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

4100-80-5, 3-Methyldihydrofuran-2,5-dione is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 13 Preparation of 6-(p-chlorophenyl)-8-methyl-1,2,4-triazolo[4,3-b]pyridazine To a solution of 114 g. of methylsuccinic anhydride in 400 ml. of chlorobenzene is added carefully 270 g. of aluminum chloride. The mixture is heated to 65¡ã C. for 11/2 hours, is cooled, quenched with ice and concentrated hydrochloric acid and extracted with benzene. The benzene layer is extracted with aqueous sodium bicarbonate. After adjusting the pH of the bicarbonate solution to 6.3, concentrated hydrochloric acid is added slowly over a period of several hours with stirring. At pH 5.7, 78 g. of white crystals are filtered off. Recrystallization of this material from ethanol-water affords 3-(p-chlorobenzoyl)-2-methylpropionic acid as white crystals.

4100-80-5, The synthetic route of 4100-80-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; American Cyanamid Company; US4117130; (1978); A;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.219823-47-9,(R)-Tetrahydrofuran-3-yl 4-methylbenzenesulfonate,as a common compound, the synthetic route is as follows.

Step 2: Synthesis of 4-Bromo-1 -[(3S)-tetrahydrofuran-3-yl]pyrazole 3.6A mixture of 650 mg [(3R)-tetrahydrofuran-3-yl] 4-methylbenzenesulfonate, 400 mg 4-bromo- 1 H-pyrazole and 1 .40 g cesium carbonate in 10 mL Nu,Nu-dimethylformamide (DMF) was stirred at 65 C for 6 h. Additional 20 mg 4-bromo-1 H-pyrazole were added and the reaction mixture was stirred at 65 C overnight. The reaction mixture was diluted with ethyl acetate and washed with brine. The combined organic phases were dried over sodium sulfate, filtered and concentrated in vacuo. The crude material was purified by flash chromatography (cyclohexane/ethyl acetate 9:1 ->1 :1 ) to yield 476 mg of 4-bromo-1 -[(3S)-tetrahydrofuran-3- yl]pyrazole 3J3 as solid.Analysis: MS: M+H = 217 / 219

219823-47-9, 219823-47-9 (R)-Tetrahydrofuran-3-yl 4-methylbenzenesulfonate 13837325, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; DAHMANN, Georg; HOFFMANN, Matthias; KLICIC, Jasna; LAMB, David James; MCCARTHY, Clive; NAPIER, Spencer; PARRISH, Karen; SCOTT, John; SWANTEK FITZGERALD, Jennifer L.; WALKER, Edward; WO2015/140054; (2015); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.696-59-3,2,5-Dimethoxytetrahydrofuran,as a common compound, the synthetic route is as follows.

696-59-3, General procedure: To a solution of amine (1 mmol) in water (2 ml) was added tetrahydro-2,5-dimethoxyfuran (1.1 mmol) and gamma-Fe2O3(at)SiO2-Sb-IL (0.08 g). The reaction mixture was stirred at 100 C for a certain period of time as required to complete the reaction. During that time, the reaction was monitored constantly by TLC. After completion of the reaction, the catalyst was removed by using a magnet and washed with ethyl acetate. The aqueous solution was extracted by ethyl acetate (3 ¡Á 5 ml). The combined organic phase was dehydrated with anhydrous sodium sulfate. After the evaporation of the solvent, the residue was purified by silica gel flash chromatography using petroleum ether/ethyl acetate as the eluent to afford the pure product.

696-59-3 2,5-Dimethoxytetrahydrofuran 79098, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Article; Ma, Fei-Ping; Li, Pei-He; Li, Bao-Le; Mo, Li-Ping; Liu, Ning; Kang, Hui-Jun; Liu, Ya-Nan; Zhang, Zhan-Hui; Applied Catalysis A: General; vol. 457; (2013); p. 34 – 41;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

111769-27-8, (R)-Tetrahydrofuran-3-amine 4-methylbenzenesulfonate is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A suspension of 2-(3-(4-( I H-indazol-5-ylamino)quinazolin-2- yl)phenoxy)acetic acid (70 my, 0.14 mmol), PyBOP* (40 mg, 0.077 mmol), DIEA (24 muL, 0.14 mmol) in dry CH2Cl2 : DMF (2 : 0.1 mL) was stirred at RT for 15 minutes. To this solution of activated acid was added (R)-tetrahydrofuran-3-aminium 4- methylbenzenesulfonate (24 mg, 0.091 mmol). After 30 minutes, 1.0 equivalent of DlEA and 0.55 equivalents of PyBOP* were added. After stirring the solution for 15 minutes, 0.65 equivalents of (R)-tetrahydrofuran-3-aminium 4-methylbenzenesulfonate were added and the mixture was stirred for an additional 30 minutes. The solvent was removed in vacuo and the crude product was purified using prep HPLC ( 15-40 90 mins) to afford 2- (3-(4-( l H-indazol-5-ylamino)quinazolin-2-yl)phenoxy)-N-((R)-tetrahydrofuran-3- yl)acetamide. (41 mg, 0.085 mmol, 61 %), 111769-27-8

111769-27-8 (R)-Tetrahydrofuran-3-amine 4-methylbenzenesulfonate 14243169, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; SURFACE LOGIX, INC.; SWEETNAM, Paul; BARTOLOZZI, Alessandra; CAMPBELL, Anthony; COLE, Bridget; FOUDOULAKIS, Hope; KIRK, Brian; SESHADRI, Hemalatha; RAM, Siya; WO2010/104851; (2010); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

149809-43-8, ((3R,5R)-5-((1H-1,2,4-Triazol-1-yl)methyl)-5-(2,4-difluorophenyl)tetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of intermediate (Vlllb) (100 g, 271 mmol) in DMF (500 ml_) under a nitrogen atmosphere was added sodium ethoxide (22.2 g, 325 mmol) resulting in a mild exotherm (from 20 to 22.0C). After stirring at 15-25C for 45 min the reaction mixture was treated with the tosylate (IX) (146.4 g, 325 mmol) and was then heated at 60-65C for 2 hr. Analysis of the resulting mixture by HPLC indicated that the reaction was essentially complete (4.4% phenol remaining, 14.6% tosylate, 77.6% product) and the mixture was cooled to 40-45C and I PA (800 ml_) was added. Water was then added drop-wise at 40-45C until a slight haze persisted (required 500 ml_) at which point a small sample of the product (100 mg, 0.15 mmol) was added as a seed and the mixture stirred for 10 min at 40-45C to ensure precipitation was initiated. Water (500 ml_) was added drop-wise at 40-45C and the suspension then cooled to 15-25C. The resulting solid was collected by filtration, washed with water (3 x 200 ml_) and then dried in vacuo at 50C give the crude product as an off-white solid (155.9 g, 89%, HPLC purity 94.8%). A portion of this material (85.0 g) was taken up in IPA (510 ml_) by heating at 65-75C until dissolution was complete. The solution was then cooled to 15-25C and stirred for 30 min. The resulting solid was collected by filtration, washed with IPA (2 x 85 ml_) and dried in vacuo at 50C to give the title compound, intermediate (IVc) as a white solid (83.4g, 87% overall yield, HPLC purity 98.2%); R< 15.74 min; m/z 646.6 (M+H)+ (ES+), 149809-43-8

149809-43-8 ((3R,5R)-5-((1H-1,2,4-Triazol-1-yl)methyl)-5-(2,4-difluorophenyl)tetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate 10895629, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; PULMOCIDE LIMITED; SUNOSE, Mihiro; COLLEY, Thomas Christopher; ITO, Kazuhiro; RAPEPORT, Garth; STRONG, Peter; (55 pag.)WO2016/87878; (2016); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.184950-35-4,(Tetrahydrofuran-3-yl)methanamine hydrochloride,as a common compound, the synthetic route is as follows.

5-Benzyloxymethyl isoxazole-3-carboxylic acid (0.59 g, 2.5 mmol), Tetrahydrofuran-3-ylmethylamine hydrochloride (0.39 g, 2.8 mmol), Triethylamine (0.28 g, 2.8 mmol) And 1-hydroxybenzotriazole (0.04 g, 0.28 mmol) Was added to chloroform (amylene added product) (15 mL). To the mixture, 1-ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride (0.54 g, 2.8 mmol) was added at room temperature, After stirring overnight, And concentrated under reduced pressure. Dilute hydrochloric acid was added to the concentrate, Extracted twice with ethyl acetate. The organic layer was washed with saturated brine, After drying over anhydrous sodium sulfate , And concentrated under reduced pressure. The residue was subjected to silica gel column chromatography, Represented by the following equation N- (tetrahydrofuran-3-ylmethyl) -5-benzyloxymethyl isoxazole-3-carboxamide (hereinafter referred to as present amide compound (13) It is written. ) 0.35 g.

184950-35-4, 184950-35-4 (Tetrahydrofuran-3-yl)methanamine hydrochloride 17750392, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; SUMITOMO CHEMICAL COMPANY LIMITED; SUMITA, YUSUKE; (264 pag.)JP2015/51963; (2015); A;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.111769-27-8,(R)-Tetrahydrofuran-3-amine 4-methylbenzenesulfonate,as a common compound, the synthetic route is as follows.

To a mixture of l-(6-chloro-l-(6-chloroquinolin-2-yl)-5-methyl-lH-benzo[111769-27-8, The synthetic route of 111769-27-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; NOVASAID AB; WANNBERG, Johan; ALTERMAN, Mathias; MALM, Johan; WO2012/117062; (2012); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.112372-15-3,Furo[2,3-c]pyridine-2-carboxylic acid,as a common compound, the synthetic route is as follows.

A solution of furo[2,3-c]pyridine-2-carboxylic acid (2 g, 12.26 mmol, 1.00 equiv), EDCI (2.8 g, 14.61 mmol, 1.20 equiv), HOBt (2 g, 14.80 mmol, 1.20 equiv) and DIPEA (4.7 g, 3.00 equiv) in MeOH (100 mL) was stirred for 20 h at rt. The resulting mixture was concentrated under vacuum. The residue was purified on a silica gel column eluted with ethyl acetate/petroleum ether (1 : 1 ) to give 1.3 g (60%) of methyl furo[2,3-c]pyndine-2-carboxylate as an off-white solid. TLC: ethyl acetate/petroleum ether = 1 /2, Rf= 0.4., 112372-15-3

112372-15-3 Furo[2,3-c]pyridine-2-carboxylic acid 13803072, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; GENENTECH,INC.; FORMA TM, LLC; BAIR, Kenneth W.; BAUMEISTER, Timm R.; BUCKMELTER, Alexandre J.; CLODFELTER, Kanl H.; DRAGOVICH, Peter; HAN, Bingsong; LIN, Jian; LIU, Xiongcai; REYNOLDS, Dominic J.; SMITH, Chase C.; WANG, Zhongguo; YUEN, Po-Wai; ZAK, Mark; ZHANG, Yamin; ZHENG, Xiaozhang; ZHAO, Guiling; WO2013/127268; (2013); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

111769-27-8, (R)-Tetrahydrofuran-3-amine 4-methylbenzenesulfonate is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

111769-27-8, To a mixture of l-(6-chloro-l-(6-fluoroquinolin-2-yl)-5-methyl-lH-benzo[Patent; NOVASAID AB; WANNBERG, Johan; ALTERMAN, Mathias; MALM, Johan; WO2012/117062; (2012); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem