Day: August 24, 2020

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.80-65-9,3-Aminooxazolidin-2-one,as a common compound, the synthetic route is as follows.

General procedure: Following the addition of 4-(4-fluorophenoxy) butyric acid (0.71 g, 3.6 mmol) to 20 mL ofdichloromethane in a 50 mL three-necked round-bottom flask, thesolution was agitated until dissolution. Subsequently, EDCI (0.85 g,4.44 mmol) HOBt (0.6 g, 4.44 mmol) and triethylamine (0.84 g,9.25 mmol) were added in turn at 0 C. Stirring in an ice bath for 1 h,3-amino-2-oxazolidinone (0.37 g, 3.6 mmol) was added again. Thesolutionwas brought to 25 C and stirred overnight. Following TLC,the product was filtered by vacuum and dried under rotary evaporation.The product was a white solid weighing 0.51 g with a yieldof 50.2%.

80-65-9 3-Aminooxazolidin-2-one 65725, aoxazolidine compound, is more and more widely used in various.

Reference£º
Article; Jiang, Kai; Yan, Xinlin; Yu, Jiahao; Xiao, Zijian; Wu, Hao; Zhao, Meihua; Yue, Yuandong; Zhou, Xiaoping; Xiao, Junhai; Lin, Feng; European Journal of Medicinal Chemistry; vol. 194; (2020);,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

497-25-6, Oxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a 25ml Schlenk reaction tube was added 1.0mmol (87 ¡¤ 1mg) oxazolidin-2-one, 0. 05mmol(11.2 mg) of palladium acetate, 0.001 mmol (1.7 mg) of H5PMo10V2O40, 0.05 mmol (5.6 mg) of 1,4-hydroquinone, 0.1 mmol(8.2 mg) of NaOAc followed by 1 mL of N, N-dimethylformamide solvent and then measuring 2.0 mmo 1 (236 mg) of 4-methylstyrene with a pipette in an oil bath at 60 C. 24 hours, after the reaction, the resulting product using a simple column chromatography device,The product was eluted with dichloromethane and then three times with distilled water, dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated by rotary evaporationThe crude product was reduced. The crude product was isolated by column (200-300 mesh silica gel) using petroleum ether and ethyl acetate as eluant (5: 1) to give 150.2 mg of 3- (1- (4-methylphenyl) vinyl) oxazolidin-2-one having a purity of more than 99%. Isolated yield 74%.

The synthetic route of 497-25-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Fujian Normal University; Huang Qiufeng; Qiu Lin; Ke Shaojia; Zhang Xiaofeng; Lin Shen; (12 pag.)CN104230835; (2017); B;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

80-65-9, 3-Aminooxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Following the addition of 4-(4-fluorophenoxy) butyric acid (0.71 g, 3.6 mmol) to 20 mL ofdichloromethane in a 50 mL three-necked round-bottom flask, thesolution was agitated until dissolution. Subsequently, EDCI (0.85 g,4.44 mmol) HOBt (0.6 g, 4.44 mmol) and triethylamine (0.84 g,9.25 mmol) were added in turn at 0 C. Stirring in an ice bath for 1 h,3-amino-2-oxazolidinone (0.37 g, 3.6 mmol) was added again. Thesolutionwas brought to 25 C and stirred overnight. Following TLC,the product was filtered by vacuum and dried under rotary evaporation.The product was a white solid weighing 0.51 g with a yieldof 50.2%.

The synthetic route of 80-65-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Jiang, Kai; Yan, Xinlin; Yu, Jiahao; Xiao, Zijian; Wu, Hao; Zhao, Meihua; Yue, Yuandong; Zhou, Xiaoping; Xiao, Junhai; Lin, Feng; European Journal of Medicinal Chemistry; vol. 194; (2020);,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2346-26-1,Oxazolidine-2,4-dione,as a common compound, the synthetic route is as follows.

WORKING EXAMPLE 1 A mixture of 3-methoxy-4-(2-phenyl-4-oxazolylmethoxy)cinnamaldehyde (5.5 g), 2,4-oxazolidinedione (6.7 g), piperidine (1.4 g) and acetic acid (120 ml) was stirred for three days under reflux. The reaction mixture was cooled, and resulting crystalline precipitate was collected by filtration, which was washed with water, ethanol and isopropyl ether, successively to give 5-[3-methoxy-4-(2-phenyl-4-oxazolylmethoxy)cinnamylidene]-2,4-oxazolidinedione (2.9 g, 43%), which was recrystallized from chloroform-methanol to afford yellow needles, m.p.227-228 C.

2346-26-1 Oxazolidine-2,4-dione 97389, aoxazolidine compound, is more and more widely used in various.

Reference£º
Patent; Takeda Chemical Industries, Ltd.; US5932601; (1999); A;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

497-25-6, Oxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A Schlenk tube was charged with aryl bromide(1 mmol), oxazolidone(1.2 mmol), N,N-dimethylglycine(10.3mg, 0.1 mmol), recrystallized CuI(9.5mg, 0.05 mmol) and K2CO3(276mg, 2 mmol). The tube was evacuated and backfilled with argon(3 times) before dry DMF(0.5 ml) was added. The reaction mixture was stirred at 120 C until the corresponding aryl bromidewas completely consumed as monitored by TLC. The reaction mixture was extracted with ethyl acetate. The organic layer was washed with H2O and brine, and dried by Na2SO4. Removal of solvent in vacuo and purified by column chromatography on silica gel to provide the desired product.

The synthetic route of 497-25-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Li, Jiaojiao; Zhang, Yihua; Jiang, Yongwen; Ma, Dawei; Tetrahedron Letters; vol. 53; 31; (2012); p. 3981 – 3983;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2346-26-1,Oxazolidine-2,4-dione,as a common compound, the synthetic route is as follows.

D. 4-[4-(2,4-Dioxo-oxazolidin-5-ylidenemethyl)-2-methoxy-phenoxy]-naphthalene-1 – carboxylic acid amide. A mixture of 4-(4-Formyl-2-methoxy-phenoxy)- naphthalene-1 -carboxylic acid amide (117 mg, 0.36 mmol), thiazolidine-2,4- dione (47.5 mg, 0.36 mmol), sodium acetate (164 mg, 2.0 mmol) and ethanol (3 mL) was heated at reflux overnight. To the mixture was added acetic acid, followed by addition of 3 drops of water, to form a clear solution. This solution was loaded onto a preparative HPLC [Waters XTerra Prep MS C8 OBD Column (5 mum, 30 x 50 mm)] and eluted with a gradient mixture of 0.1 % aqueous TFA and acetonitrile. After triturating with methanol and drying, the pure product was obtained. 1H NMR (400 Hz, DMSO-c/6) ?12.64 (s, 1 H), 8.41 (d, 1 H), 8.21 (d, 1 H), 7.93 (s, 1 H), 7.83 (s, 1 H), 7.65-7.57 (m, 2H), 7.55 (d, 1 H), 7.50 (s, 1 H), 7.48 (s, 1 H), 7.21 (d, 1 H), 7.16 (d, 1 H), 6.68 (d, 1 H), 3.81 (s, 3H); LC/MS (m/z) [M+1]+ 421.0 (calculated for C22Hi7N2O5S, 421.1 ).;

The synthetic route of 2346-26-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; JANSSEN PHARMACEUTICA N.V.; WO2008/109727; (2008); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.17016-83-0,(S)-4-Isopropyl-2-oxazolidinone,as a common compound, the synthetic route is as follows.

A mixture of 2-(3-bromo-phenyl)-3,3-dimethyl-l,2,3,4-tetrahydro-quinoline-6-carboxylic acid (600 mg, 1.7 mmol), (S)-4-isopropyl-2-oxazolidinone (322 mg, 2.5 mmol), copper(I) iodide (96 mg, 0.5 mmol), N, N-dimethylglycine hydrochloride (140 mg, 1.0 mmol) and potassium carbonate (923 mg, 6.7 mmol) in dimethyl sulfoxide (5 mL) was stirred at 120C for 16 h. Then the reaction mixture cooled to room temperature. The reaction mixture was extracted with ethyl acetate (2 x 150 mL), washed with water (2 x 50 mL) and saturated aqueous ammonium chloride solution (2 x 50 mL), dried over anhydrous sodium sulfate and then concentrated in vacuo. Purification by Waters automated flash system (column: Xterra 30 mm x 100 mm, sample manager 2767, pump 2525, detector: ZQ mass and UV 2487, solvent system: acetonitrile and 0.1% ammonium hydroxide in water) afforded 2-[3-((S)-4-isopropyl-2-oxo-oxazolidin-3-yl)-phenyl]-3,3-dimethyl- l,2,3,4-tetrahydro-quinoline-6-carboxylic acid (555 mg, 80%) as a white solid : LC/MS m/e calcd for C24H28N2O4 (M+H)+: 409.50, observed: 409.1.

17016-83-0 (S)-4-Isopropyl-2-oxazolidinone 7157133, aoxazolidine compound, is more and more widely used in various.

Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; CHEN, Li; FENG, Lichun; HUANG, Mengwei; LIU, Yongfu; WU, Guolong; WU, Jim, Zhen; ZHOU, Mingwei; WO2011/128251; (2011); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.497-25-6,Oxazolidin-2-one,as a common compound, the synthetic route is as follows.

1) Mix 2-oxazolidinone and sodium hydride in a molar ratio of 1: 1, and add N, N-dimethylformamide to dissolve thoroughly,propargyl bromide (the molar ratio of propargyl bromide to 2-oxazolidinone is 1: 1) is added dropwise to the above reaction solution,The reaction was stirred at room temperature for 0.5 and then quenched with water. The organic layer was extracted with ethyl acetate.After drying and concentration, column chromatography (eluent system: petroleum ether: ethyl acetate = 1: 1) to obtain a compound of the general formula II-1;

As the paragraph descriping shows that 497-25-6 is playing an increasingly important role.

Reference£º
Patent; Chongqing University; Xia Yi; Zhang Yanhua; Liu Qian; Lin Yun; (25 pag.)CN110590686; (2019); A;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

875444-08-9, (4S,5R)-5-(3,5-Bis(trifluoromethyl)phenyl)-4-methyloxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A solution of ethyl [trans-4-( {ethyl [2-(hydroxymethyl)-4-(trifluoromethyl)phenyl] amino}methyl)cyclohexyl]acetate (Step B; 60 mg; 0.149 mmol) in toluene (1 mL) was added dropwise to a stirred solution of thionyl chloride (12.3 muL; 0.169 mmol) in toluene (300 muL) at 0C. The reaction stirred at room temperature for 1.5 h. Pyridine (27 mL) was added and the reaction was partitioned between toluene (10 mL) and H2O (10 mL). The aqueous layer was re-extracted with toluene (10 mL) and the combined organic layers were washed with brine (10 mL), dried (Na2SO4), filtered and concentrated in vacuo. The residue was dissolved in DMF (1 mL) and (45,5i?)-5-[3,5- bis(trifluoromethyl)phenyl]-4-methyl-l,3-oxazolidin-2-one (intermediate 17; 56 mg; 0.179 mmol) and potassium terf-butoxide (23.5 mg; 0.209 mmol) were added successively. The reaction stirred for 72 h and was quenched with sat. NH4Cl. The reaction was partitioned between sat. NH4Cl (10 mL) and EtOAc (10 mL). The aqueous layer was re-extracted with EtOAc (3 x 10 mL) and the combined organic layers were washed with brine (10 mL), dried (Na2SO4), filtered and concentrated in vacuo. The residue was purified by flash silica gel chromatography (0-20% EtOAc/hexanes gradient) and chiral HPLC (1.5% IP A/heptane; ChiralPak IA column) to afford ethyl (&r¡ãw-4-{[[2-({(4S,5lambda)-5-[3,5- bis(trifluoromethyl)phenyl]-4-methyl-2-oxo-l,3-oxazolidin-3-yl}methyl)-4-(trifluoromethyl)phenyl](ethyl)amino]methyl}cyclohexyl)acetate as a clear glass. LCMS = 697.3 (M+l)+. IH NMR (CDCl3, 500 MHz): delta 7.92 (s, 1 H), 7.81 (s, 2 H), 7.65 (s, 1 H), 7.58 (d, J = 8.4 Hz, 1 H), 7.30-7.27 (m, 1 H)5 5.78 (d, J= 8.1 Hz3 1 H), 4.88 (d, J= 16.5 Hz, 1 H)5 4.74-4.69 (m, 1 H), 4.11 (q, J= 7.1 Hz, 2 H), 3.17-3.10 (m, 2 H), 3.05-2.97 (m, 2 H), 2.15 (d, J= 6.8 Hz, 2 H), 1.80-1.68 (m, 4 H), 1.66-1.50 (m, 1 H), 1.46-1.39 (m, 1 H), 1.25 (t, J= 7.1 Hz, 3 H), 1.07 (t, J= 7.0 Hz, 3 H), 1.03-0.85 (m, 4 H), 0.71 (d, J= 6.6 Hz, 3 H).

As the paragraph descriping shows that 875444-08-9 is playing an increasingly important role.

Reference£º
Patent; MERCK & CO., INC.; WO2007/81571; (2007); A2;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

875444-08-9, (4S,5R)-5-(3,5-Bis(trifluoromethyl)phenyl)-4-methyloxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

3′-(2-(Bromomethyl)-4,4-dicyclohex-l-enyl)-3,5-difiuoro-4′-methoxy-4-(methoxy methoxy)biphenyl, which is an intermediate compound, was dissolved in dimethylformamide (DMF). (4S,5R)-5-(3,5-bis(trifluoromethyl)phenyl)-4-oxazolidin-2-one and sodium hydride were added dropwise to the obtained solution at room temperature. After the completion of the reaction, the reaction mixture was extracted with ethyl acetate, washed with water and brine, dried with anhydrous magnesium sulfate, filtered, and concentrated under reduced pressure. The residue was separated by MPLC (Si02, 5:1 n-hexane : EtOAc), thus obtaining Compound 304 (60 mg, 46%) as white oil.1H NMR (400 MHz, DMSO-d6); atropisomer mixture; delta 7.86 (s, 1 H), 7.79 (s, 2 H), 7.36 – 7.39 (m, 1 H), 6.88 – 6.95 (m, 3 H), 5.57 – 5.62 (m, 1 H), 5.17 (d, 1 H, J= 9.9 Hz), 3.96 -4.04 (m, 2 H), 3.79 – 3.82 (2s, 3 H), 3.58 – 3.62 (m, 3 H), 3.44 – 3.58 (m, 1 H), 2.00 – 2.50 (m, 2 H), 1.93 – 1.95 (m, 2 H), 1.50 – 1.55 (m, 2 H), 1.02 – 1.07 (m, 6 H), 0.37, 0.43 (2d, 3 H, J= 6.6,6.5 Hz); MS (ESI) m/z 714 (M+ + H).

The synthetic route of 875444-08-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; CHONG KUN DANG PHARMACEUTICAL CORP.; LEE, Seohee; OH, Jungtaek; LEE, Jaekwang; LEE, Jaewon; BAE, Suyeal; HA, Nina; LEE, Sera; WO2012/141487; (2012); A2;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem