Tag: M.W:100-200

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- (3-trifluoromethylbenzyl) isoxazole-3-carboxylic acid (242 mg, 0.89 mmol), Tetrahydrofuran-3-ylmethylamine hydrochloride (155 mg, 1.15 mmol), Triethylamine (0.32 mL, 2.30 mmol) And 1 – hydroxybenzotriazole (15 mg, 0.11 mmol) Was added to chloroform (amylen added product) (5 mL). To the mixture, 1-Ethyl-3- (3-dimethylaminopropyl) carbodiimide hydrochloride (220 mg, 1.15 mmol) was added at room temperature, After stirring overnight, it was concentrated under reduced pressure. The residue was subjected to silica gel column chromatography, Represented by the following equation N- (tetrahydrofuran-3-ylmethyl) -5- (3-trifluoromethylbenzyl) isoxazole-3-carboxamide (Hereinafter referred to as the amide compound (158)) 130 mg was obtained., 184950-35-4

The synthetic route of 184950-35-4 has been constantly updated, and we look forward to future research findings.

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

184950-35-4, (Tetrahydrofuran-3-yl)methanamine hydrochloride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Production Example 151 (0471) 5-(Naphthalen-2-ylmethyl)isoxazole-3-carboxylic acid (204 mg, 0.81 mmol), tetrahydrofuran-3-ylmethylamine hydrochloride (204 mg, 1.48mmol), triethylamine (0.38 mL, 2.75 mmol) and 1-hydroxybenzotriazole (14 mg, 0.11 mmol) were added to chloroform (amylene addition product) (5 mL). 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (264 mg, 1.38 mmol) was added to the mixture at room temperature, and the mixture was stirred overnight and then concentrated under reduced pressure. The residue was applied to a silica gel column chromatography to obtain 166 mg of N-(tetrahydrofuran-3-ylmethyl)-5-(naphthalen-2-ylmethyl)iso xazole-3-carboxamide (hereinafter, referred to as Compound of Present Invention (159)) represented by the following formula. 1H-NMR (CDCl3, TMS, delta(ppm)):1.60-1.72(m, 1H), 2.02-2.12(m, 1H), 2.52-2.61(m, 1H), 3.41-3.46(m, 2H), 3.57(dd, J=9.0, 5.3Hz, 1H), 3.72-3.79(m, 1H), 3.82-3.93(m, 2H), 4.29(s, 2H), 6.43(d, J=3. 9Hz, 1H), 6.90(brs, 1H), 7. 34-7. 38 (m, 1H), 7. 46-7. 53 (m, 2H), 7.71(s, 1H), 7.78-7.86(m, 3H)

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; MITSUDERA, Hiromasa; AWASAGUCHI, Kenichiro; AWANO, Tomotsugu; UJIHARA, Kazuya; EP2952096; (2015); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

63095-51-2,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.63095-51-2,(R)-4-Propyldihydrofuran-2(3H)-one,as a common compound, the synthetic route is as follows.

A solution of thionyl chloride (200 mL) anhydrous ZnCI2 (10.6 g, 0.078 mol), and the compound of formula I (bOg, 0.78mmol) was heated to 85 C. After the reaction was complete, the solvents were evaporated in vacuo. The crude product was purified by vacuum distillation to obtain the title compound X as a yellow oil. Yield 79.7%.

As the paragraph descriping shows that 63095-51-2 is playing an increasingly important role.

Reference£º
Patent; WANG, Peng; LI, Pixu; WEI, Qiang; LIU, Yuanhua; (61 pag.)WO2016/191435; (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.1679-47-6,3-Methyldihydrofuran-2(3H)-one,as a common compound, the synthetic route is as follows.

Typical Procedure: Palladium acetate (45 mg, 0.2 mmol, 0.1 eq.) and R-(+)-BINAP (156 mg, 0.25 mmol, 0.125 eq.) in dry toluene (30 mL, degased with dry nitrogen) were stirred at room temperature under nitrogen for 60 minutes. Aryl bromide (4 mmol, 2.0 eq.) and alpha-methyl-gamma-butyrolactone (2 mmol) were added via syringe. KN(TMS)2 in toluene (0.5 M, 7 mL, 3.5 mmol, 1.75 eq.) was added dropwise and the resultant dark red solution was then stirred at 100-105 C. for 24 hours. The reaction mixture was cooled to room temperature before treating with 1N HCl (15 mL) and water (50 mL). The mixture was extracted with ethyl acetate (3¡Á50 mL) and the combined organic phase was washed with water (25 mL) and brine (40 mL) and dried over MgSO4. After removal of the solvent, the residue was chromatographed on silica gel (heptane: ethyl acetate=8:1?2:1) to afford the product., 1679-47-6

The synthetic route of 1679-47-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Zhang, Tony Yantao; Zhang, Hongbin; Proctor, Christophor Scott; US2003/225282; (2003); 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.10374-51-3,5-(Hydroxymethyl)dihydrofuran-2(3H)-one,as a common compound, the synthetic route is as follows.

Example 1 (S)-gamma-Pivaloyloxymethyl-gamma-butyrolactone (V) To a solution of (S)-gamma-hydroxymethyl-gamma-butyrolactone1 Prepared according to the literature procedure: M. Taninguchi, K. Koga, S. Yamada, Tetrahedron, 30 , 3547 (1974).1(40 g, 0.34M) in pyridine (200 mL) was added pivaloyl chloride (46 g, 0.38M) and the mixture was heated at 50C for 5 h under nitrogen. The reaction was cooled to room temperature and MeOH (50 mL) was added. The mixture was then concentrated in vacuo, taken up in CH2Cl2-water. The CH2Cl2 was washed with water, 30% H3PO4, brine, and dried over MgSO4. After removal of the solvent under reduced pressure, the residual oil was chromatographed on silica gel using CH2Cl2 as eluent to give 2 (48 g, 70%) as a colorless oil: 1H NMR (CDCl3) delta 1.15 (s, 9H), 1.9-2.6 (m, 4H), 4.09 (dd, J=4.8, 12.3 Hz, 1H), 2.29 (dd, J=3.3, 12.3 Hz, 1H), 4.7-4.75 (m, 1H)., 10374-51-3

As the paragraph descriping shows that 10374-51-3 is playing an increasingly important role.

Reference£º
Patent; Bristol-Myers Squibb Company; EP502447; (1992); 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.4100-80-5,3-Methyldihydrofuran-2,5-dione,as a common compound, the synthetic route is as follows.,4100-80-5

(Step 2) To a solution of the compound obtained in Step 1 (8 g, 22.22 mmol) in dichloromethane (100 mL) was added 3-methyldihydrofuran-2,5-dione (2.78 g, 24.44 mmol) at 0¡ãC, and the mixture was stirred at room temperature for 4 hr. The reaction solution was concentrated under reduced pressure, and the precipitate was triturated with 20percent ethyl acetate/hexane to give a mixture (10.4 g, 98.6percent) of N-(2,4-dimethoxybenzyl)-N-(9-ethyl-9H-carbazol-3-yl)-2-methylsuccinamidic acid and a regioisomer thereof, as a white powder. The regioisomeric mixture was used for the next step without purification._(Step 3) [0537] To a solution of the regioisomeric mixture (10.4 g, 21.94 mmol) obtained in Step 2 in THF (300 mL) was added 2M borane-dimethyl sulfide THF solution (10.75 mL, 21.5 mol) at 0¡ãC, and the mixture was stirred at room temperature for 4 hr. The reaction solution was concentrated under reduced pressure, and the residue was dissolved in ethyl acetate (200 mL). The solution was washed with water (100 mL) and saturated brine (100 mL), and dried, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (solvent; 4percent methanol/dichloromethane) to give a mixture (6 g, 59.4percent) of N-(2,4-dimethoxybenzyl)-N-(9-ethyl-9H-carbazol-3-yl)-4-hydroxy-3-methylbutylamide and a regioisomer thereof, as a white powder. The regioisomeric mixture was used for the next step without further purification.

4100-80-5 3-Methyldihydrofuran-2,5-dione 20051, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; Takeda Pharmaceutical Company Limited; YAMAMOTO, Satoshi; SHIRAI, Junya; FUKASE, Yoshiyuki; TOMATA, Yoshihide; SATO, Ayumu; OCHIDA, Atsuko; YONEMORI, Kazuko; NAKAGAWA, Hideyuki; EP2759533; (2014); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

124391-75-9, (S)-(Tetrahydrofuran-3-yl)methanol is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 76: Preparation of 5-[5-Fluoro-2-oxo-l,2-dihydro-indoI-(3Z)- yIidenemcthyl]-2,4-dimethyI-lH-pyrroIe-3-carboxylic acid [(R)-3-oxo-2- (tetrahydro-furan-3-yImethyl)-isoxazolidin-4-yl]-amide76a 76b Stepl : To a solution of 76a (250mg 2.45mmol), TEA (273mg, 2.7mmol) inDCM (2OmL) was added methane sulfonyl chloride (298mg, 2.6mmol) drop-wise at O0C. The mixture was stirred overnight at room temperature. After the reaction was complete, the mixture was washed with Na2CO3 solution. The organic phase was separated and the aqueous phase was extracted by DCM (20mL*3). The organic phase was combined, dried over anhydrous Na2SO4 and evaporated to provide 76b (387mg, 88percent) as an oil.

124391-75-9, 124391-75-9 (S)-(Tetrahydrofuran-3-yl)methanol 40784875, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; XCOVERY, INC.; WO2008/33562; (2008); A2;,
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.21461-84-7,(S)-(+)-5-Oxo-2-tetrahydrofurancarboxylic Acid,as a common compound, the synthetic route is as follows.

To a mixture of(2S)-5-oxotetrahydrofuran-2-carboxylic acid (1.00 kg, 7.69 mol) in DCM (10.00 L) and DMF (1OMO mL) was added (COd)2 (2.93 kg, 23.06 mol) dropwise slowly at 0C under N2. The reaction was stirred at 0 C for 30 minutes, then heated to 25 C and stirred for additional 2 hours, After the reaction was completed, the mixture was concentrated in vacuo at 40 C to afford 1.0 kg of (28)-5-oxotetrahydrofuran-2-carbonyl chloride as a yellow oil whichwas used for the next step directly., 21461-84-7

As the paragraph descriping shows that 21461-84-7 is playing an increasingly important role.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; WANG, Baoxia; WANG, Lisha; YUN, Hongying; ZHENG, Xiufang; (78 pag.)WO2016/180743; (2016); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

42417-39-0, 3-Aminodihydrofuran-2(3H)-one hydrochloride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Synthesis of Butoxy-SHL (1) To a solution of 3,4-dibutoxy-cyclobut-3-ene-1,2-dione (0.120 g, 0.53 mmol) in DMF at rt was added alpha-Amino-gamma-butyrolactone-hydrochloride (0.070 g, 0.38 mmol) and triethylamine (1.5 equiv.) and the mixture refluxed overnight. The completion of the reaction was monitored by TLC for the disappearance of starting material. The reaction was quenched with water and extracted with EtOAc (3*100 mL). The organic layers were collected, washed with brine (2*25 mL), dried over Na2SO4 and concentrated in vacuo. Flash column chromatography (SiO2, 100% EtOAc) yielded compound 1 as a brown solid.

42417-39-0, 42417-39-0 3-Aminodihydrofuran-2(3H)-one hydrochloride 445963, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; SYRACUSE UNIVERSITY; Luk, Yan-Yeung; Narasimhan, Sri Kamesh; Falcone, Eric; US2014/39195; (2014); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

184950-35-4, (Tetrahydrofuran-3-yl)methanamine hydrochloride is a Tetrahydrofurans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

B. 6-Bromo-N2-((tetrahydrofuran-3-yl)methyl)pyrazine-2,3-diamine.3,5-Dibromopyrazin-2-amine (253 mg, 1 mmol), (tetrahydrofuran-3-yl)methanamine hydrochloride (0.33 g, 2.4 mmol), diisopropylethylamine (0.5 mL), and n-butanol (2 mL) were heated in a Biotage Emrys Optimizer microwave reactor at 200 C for 2 h. The reaction was purified on silica gel column (0-10% methanol in ethyl acetate) to give a tan solid (140 mg, 51% yield). MS (ESI) m/z 303.3 [M+l]+., 184950-35-4

The synthetic route of 184950-35-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SIGNAL PHARMACEUTICALS, LLC; WO2008/51493; (2008); A2;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem