Category: 99395-88-7

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.99395-88-7,(S)-4-Phenyloxazolidin-2-one,as a common compound, the synthetic route is as follows.

Step 4. (5)-3-((5)-3-(4-Chlorophenyl)-3-(6-methoxypyridin-3-yl)propanoyl)-4-phenyloxazolidin- 2-one To a precooled (0 C) solution of (5)-3-(4-chlorophenyl)-3-(6-methoxypyidin-3- yl)propanoic acid (3.30 g, 11.3 mmol) in THF (30.0 mL) was added pivolyl chloride (1.39 mL, 1 1.3 mmol), DMAP (cat) and triethylamine (3.15 mL, 22.6 mmol) drop-wise and stirred for 1 h. In another precooled (-78 C) suspension of (5)-4-phenyloxazolidin-2-one (2.03 g, 12.4 mmol) in THF (10.0 mL) was added w-BuLi (2.50 M solution in hexanes, 9.30 mL, 14.9 mmol) drop- wise and stirred at -20 C for 1 h. The solution of the above mixed anhydride was added slowly and stirred for additional 3 h. The reaction mixture was quenched with saturated solution of NH4C1 (250 mL) and extracted with EtOAc (2 x 200 mL). The combined EtOAc extracts were washed with brine (200 mL), dried ( a2S04), filtered and concentrated under reduced pressure. The residue was purified on 40 g S1O2 column using using a gradient elution of 0-40% EtOAc in hexanes. Fractions containing the product were combined and concentrated under reduced pressure to provide the product (3.20 g, 65%) as white solid. MS: m/z = 437 (M+H+)., 99395-88-7

As the paragraph descriping shows that 99395-88-7 is playing an increasingly important role.

Reference£º
Patent; MERCK SHARP & DOHME CORP.; MSD R&D (CHINA) CO. LTD.; WILLIAMS, Peter, D.; MCCAULEY, John, A.; BENNETT, David, J.; BUNGARD, Christopher, J.; CHANG, Lehua; CHU, Xin-Jie; DWYER, Michael, P.; HOLLOWAY, M. Katherine; KEERTIKAR, Kartik, M.; LOUGHRAN, H. Marie; MANIKOWSKI, Jesse, J.; MORRIELLO, Gregori, J.; SHEN, Dong-Ming; SHERER, Edward, C.; SCHULZ, Jurgen; WADDELL, Sherman Tim; WISCOUNT, Catherine, M.; ZORN, Nicolas; SATYANARAYANA, Tummanapalli; VIJAYASARADHI, Sivalenka; HU, Bin; JI, Tao; ZHONG, Bin; WO2015/17393; (2015); A2;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

99395-88-7, (S)-4-Phenyloxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

45)-3-{[(4-Methoxybenzyl)thio]acetyl}-4-phenyl-l,3-oxazoIidin-2-one[(4-Methoxybenzyl)thio]acetic acid (1.3 g, 6.1 mmol) was dissolved in dry CH2Cl2 (40 ml) and given O0C. Nu,Nu’-Dicyclohexylcarbodiimide (DCC, 6.1 g, 6.1 mmol) and 4- 30 (dimethylamino)pyridine (DMAP, 1.6 g, 12.9 mmol) were added and the mixture was stirred for 30 minutes. (S)-(+)-4-Phenyl-2-oxazolidinone (1,0 g, 6.1 mol) was added and the mixture was stirred at room temperature for 24 hours. The mixture was filtrated, concentrated under EPO reduced pressure and purified by flash-chromatography (Hex : EtOAc 8:2 then 1:1). This afforded 1.7 g (77 %) of the title compound.1H-NMR (CDCl3, 200 MHz): delta 3.46-3.59 (m, 3H), 3.74-3.76 (m, 4H), 4.23-4.28 (m, IH), 4.68 (t, J= 8.8 Hz, IH), 5.38-5-42 (m, IH), 6.78 (d, J = 8.6 Hz, 2H), 7.14 (d, J= 8.6 Hz, 2H), 7.32-7.40 (m, 5H)., 99395-88-7

99395-88-7 (S)-4-Phenyloxazolidin-2-one 730424, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; ASTRAZENECA AB; WO2006/137795; (2006); 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.99395-88-7,(S)-4-Phenyloxazolidin-2-one,as a common compound, the synthetic route is as follows.

42 g (165 mmol) compound Formula IV, product of Example 1 was solved in 340 ml water- free terahydrofurane, and the vessel was rinsed by dry N2 gas. The solution was cooled to – 200C, and 55 ml (390 mmol) triethyl-amine was added. A mixture of 40 ml tetrahydrofurane and 20.2 ml pivaloyl chloride (19,8 g, 164 mmol) is added trough a drip-funnel for some 30 min at a temperature between -100C and -20 0C. The precipitate-containing mixture was stirred for 2 h at a temperature between -10 and -200C, and then 24,45 g (150 mmol) solid S (+)-4-phenyl-2-oxazolidinone (Va) and 7,5 g (177 mmol) water-free litium-chloride was sprinkled consecutively into it. Then the suspension was stirred for 4 h while it warmed up to 20-25 0C.The reaction was analytically controlled by thin-layer chromatography. When the spot of S (+)-4-phenyl-2-oxazolidinone decreased to 3%, the reaction was stopped with adding 300 ml toluene and 150 ml saturated ammonium-chloride solution. The phases were separated then the aqueous phase was extracted by 50 ml toluene. The united toluenic solution is washed by 2×150 ml 10% citric acid solution, 2×150 ml IM NaOH solution and at last with 3x 150 ml water. The organic phase was dried on anhydrous Na2SO4, the desiccant was filtered out, and the filtrate was evaporated in vacuum. The residue was crystallized at O0C with 150 ml isopropyl-alcohol. The product (Via) was dried in vacuum in the presence of P2O5. Yield: 55.7 g (93%) Melting point: 100-1020C[alpha]jf =+54.3, (c=l, dichloromethane)1H NMR data: (500 MHz, OMSO-d6, 25 0C) delta 1.42-1.56 (m, 2H), 1.76-1.85 (m, 2H), 2.80 (dt, J = 17.2, 7.5 Hz, IH), 2.90 (dt, / = 17.2, 7.5 Hz, IH), 3.61-3.71 (m, 2H), 3.89-3.99 (m, 2H), 4.13 (dd, J = 8.7, 3.6 Hz, IH), 4.71 (t, J = 8.7 Hz, IH), 5.43 (dd, J – 8.7, 3.6 Hz, IH), 7.12-7.19 (m, 2H), 7.23-7.28 (m, 2H), 7.29-7.34 (m, IH), 7.34-7.42 (m, 4H) ppm., 99395-88-7

99395-88-7 (S)-4-Phenyloxazolidin-2-one 730424, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; RICHTER GEDEON VEGYESZETI GYAR RT.; WO2007/72088; (2007); 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.99395-88-7,(S)-4-Phenyloxazolidin-2-one,as a common compound, the synthetic route is as follows.

(4S)-3-{[(4-Methoxybenzyl)thio]acetyI}-4-phenyl-l,3-oxazolidin-2-one; [(4-Methoxybenzyl)thio] acetic acid (1.3 g, 6.1 mmol) was dissolved in dry CH2Cl2 (40 ml) and given O0C. N,N’-Dicyclohexylcarbodiimide (DCC, 6.1 g, 6.1 mmol) and 4- (dimethylamino)pyridine (DMAP, 1.6 g, 12.9 mmol) were added and the mixture was stirred for 30 minutes. (S)-(+)-4-Phenyl-2-oxazolidinone (1,0 g, 6.1 mol) was added and the mixture was stirred at room temperature for 24 hours. The mixture was filtrated, concentrated under reduced pressure and purified by flash-chromatography (Hex : EtOAc 8:2 then 1:1). This afforded the title compound.1H-NMR (CDCl3, 200 MHz): delta 3.46-3.59 (m, 3H), 3.74-3.76 (m, 4H), 4.23-4.28 (m, IH), 4.68 (t, /= 8.8 Hz, IH), 5.38-5-42 (m, IH), 6.78 (d, 7= 8.6 Hz, 2H), 7.14 (d, J = 8.6 Hz, 2H), 7.32-7.40 (m, 5H)

99395-88-7, As the paragraph descriping shows that 99395-88-7 is playing an increasingly important role.

Reference£º
Patent; ASTRAZENECA AB; WO2006/137792; (2006); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

99395-88-7, (S)-4-Phenyloxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Sodium hydride (60% by weight liquid paraffin dispersion, 270 mg, 6.75 mmol) was added to a tetrahydrofuran (15 mL) solution of (S) -4-phenyloxazolidin-2-one (1.00 g, 6.14 mmol) In addition,After stirring at 0 C. for 20 minutes, 2-chloroacetyl chloride (0.538 mL, 6.75 mmol) was added at 0 C.,And the mixture was stirred at 0 C. for 1 hour.Saturated aqueous sodium hydrogen carbonate solution (10 mL) was added to the reaction solution, and the obtained aqueous solution was extracted three times with ethyl acetate,The organic layer was washed with a saturated aqueous sodium chloride solution,Dried over anhydrous sodium sulfate and filtered, and the filtrate was concentrated under reduced pressure. The obtained residue was purified by column chromatography (silica gel, n-hexane / ethyl acetate)(S) -3- (2-chloroacetyl) -4-phenyloxazolidin-2-one(979 mg, 4.11 mmol, 67%)As a white powder., 99395-88-7

As the paragraph descriping shows that 99395-88-7 is playing an increasingly important role.

Reference£º
Patent; Toray Industries, Inc.; Adachi, Youhei; Taguri, Tomonori; (23 pag.)JP2018/172309; (2018); A;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

99395-88-7, (S)-4-Phenyloxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

At the same time, in a seperate flask charged with a solution of (S)-(+)-4-phenyl-2-oxazolidinone (8.86 g, 54 mmol) in anhydrous tetrahydrofuran (130 mL) under nitrogen at -78 C. was added dropwise a solution of n-butyl lithium (22 mL, 54 mmol, 2.5 M in hexanes). The mixture was stirred at -78 C. for 20 minutes and then transferred via a cannula into the reaction flask containing the mixed anhydride at -78 C. The reaction mixture was stirred at 0 C. for 1 hour, then warmed to room temperature and stirred for 18 hours. The mixture was quenched with saturated aqueous ammonium chloride solution (200 mL), concentrated to about half of its original volume under reduced pressure to remove tetrahydrofuran. The remaining mixture was extracted with ethyl acetate (2*250 mL). The organic layer was separated, combined, dried over sodium sulfate and concentrated under reduced pressure. The residue was purified by chromatography over silica gel eluted with 2:1 ethyl acetate/hexanes to give (S)-3-((E)-pent-2-enoyl)-4-phenyl-oxazolidin-2-one as a white foam (9.9 g, 75%)., 99395-88-7

99395-88-7 (S)-4-Phenyloxazolidin-2-one 730424, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; Chu, Xin-Jie; Fotouhi, Nader; Huby, Nicholas J.S.; Kong, Norman; McDermott, Lee Apostle; Moliterni, John; Zhang, Zhuming; US2006/41146; (2006); 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.99395-88-7,(S)-4-Phenyloxazolidin-2-one,as a common compound, the synthetic route is as follows.

To a solution of 69.0 g (615 mmol) of 5-hexynoic acid and 214 mL (1540 mmol) of triethylamine in 1.0 L of anhydrous tetrahydrofuran at -25C under an atmosphere of nitrogen was added 83.0 mL (677 mmol) of trimethylacetyl chloride over 20 min. Upon addition a white precipitate formed and the resulting suspension was stirred for 2 h. Next, 28.7 g (677 mmol) of anhydrous lithium chloride and 100.0 g (615.0 mmol) of (45)-4-phenyl-l,3-oxazolidin-2-one were added sequentially and the mixture was allowed to gradually warm to ambient temperature over 12 h. All volatiles were removed in vacuo and the residue was diluted with water (1 L) and extracted with ethyl acetate (3 x 300 mL). The combined organic layers were washed with brine (250 mL), dried over magnesium sulfate, filtered and concentrated in vacuo. The crude residue was purified by silica gel chromatography eluting with a 5-50% ethyl acetate in hexanes gradient to afford the title compound as a colorless solid (135 g, 85.4%). NMR (500 MHz, CDC13): delta 7.40-7.37 (m, 2H), 7.36-7.32 (m, 1H), 7.31-7.28 (m, 2H), 5.42 (dd, J= 8.9, 3.7 Hz, 1H), 4.69 (t, J- 8.9 Hz, 1H), 4.28 (dd, J- 9.2, 3.7 Hz, 1H), 3.13-3.02 (m, 2H), 2.24-2.21 (m, 2H), 1.94 (t, J= 2.6 Hz, 1 H), 1.84 (quintet, J- 7.1 Hz, 2H). LC-MS: m/z (ES) 258.2 (MH)+., 99395-88-7

99395-88-7 (S)-4-Phenyloxazolidin-2-one 730424, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; MERCK SHARP & DOHME CORP.; NAGABUKURO, Hiroshi; EDMONDSON, Scott, D.; SINHAROY, Mary, Struthers; DENNEY, William, S.; FRENKL, Tara, L.; WO2011/43942; (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.99395-88-7,(S)-4-Phenyloxazolidin-2-one,as a common compound, the synthetic route is as follows.

The compound (4) (30 g, 142.72 mmol) Triethylamine (26 g, 256.91 mmol) was dissolved in dichloromethane (150 ml)Cooling to 5 to 10 C, dropwise addition of pivaloyl chloride (17.3g, 142.62mmol), System has exothermic, 30min drop finished,5 to 10 deg C insulation reaction 2h, To the reaction system was added (S) -4-phenyl-2-oxazolidinone (23.3 g, 142.76 mmol) DMAP (2.4 g, 19.63 mmol), DMF (15 ml),Exothermic The temperature rose to 15 C, Heated to 45 reflux reaction 3h, Down to room temperature, Plus dichloromethane (150 ml), The organic phase was washed with water (60 ml) 1N hydrochloric acid (120 ml) Water (60ml) 2.5% aqueous sodium hydroxide solution (180 ml) Add water (50ml) wash, Organic phase concentrated dry, Plus isopropyl alcohol (60 ml), Stirring for 24 h, Filter, Add isopropyl alcohol (10ml) leaching, To give a white solid, I.e. compound (5) (34.4 g, 68% yield)., 99395-88-7

99395-88-7 (S)-4-Phenyloxazolidin-2-one 730424, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; Anrun Pharmaceutical (Suzhou) Co., Ltd.; Hong Jian; Wang Jingbing; Xu Xin; Liu Guobin; (15 pag.)CN104513187; (2017); B;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.99395-88-7,(S)-4-Phenyloxazolidin-2-one,as a common compound, the synthetic route is as follows.

4-Pentenoic acid (compound X), 4-dimethylammoniumpyridine (DMAP) was added to a mixture of methylene dichloride and DMF at about 20C to about 30C and the reaction mass was cooled to about 15C to about 20C. Triethylamine and (S)-(+)-4-Phenyl-2-oxazolidinone (compound GammaChi’) was added to the reaction mass and the reaction mass was stirred for about 5-10 minutes. The reaction mass was then cooled to about 0C to about 5C. A solution of pivaloyl chloride in methylene dichloride was added to the reaction mass. The temperature of reaction mass was then raised to about 25C to about 30C and stirred for about 10-15 hours. After completion of reaction, the reaction mass was quenched in dilute sulfuric acid at about 0C to about 5C. The temperature of the reaction mass was raised to about 20C to about 30C and layers were separated. The aqueous layer was extracted with methylene dichloride. After washing with 5% potassium carbonate solution followed by brine, the organic layer was distilled off completely under reduced pressure to obtain oily residue. To this oily mass, cyclohexane was added at about 50C to about 55C and the reaction mass was cooled gradually to about 20C to about 30C and stirred for 2 hours, the reaction mass was filtered, the residue obtained was dried to get (4S)-3-(pent-4-enoyl)- 4-phenyl-l,3-oxazolidin-2-one (compound Vffl’) as off-white to pale yellow solid. HPLC Purity more than 98.0%., 99395-88-7

99395-88-7 (S)-4-Phenyloxazolidin-2-one 730424, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; GLENMARK PHARMACEUTICALS LIMITED; NAIR, Ranjeet; BHIRUD, Shekhar Bhaskar; THANKI, Bhavin Prabhudas; BHISE, Sanjay Shashikant; KESHAV, Shrikant Prabhakar; JAGDHANE, Rajendra; CHAUDHARI, Ganesh Bhaskar; GAIKWAD, Nandkumar; GADGE, Sandip; (56 pag.)WO2019/87172; (2019); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

99395-88-7, (S)-4-Phenyloxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of (S)-4-phenyloxazolidin-2-one (0.737 g, 4.517 mmol) in DMF was added sodium hydride (0.189 g, 4.73 mmol) and the reaction stirred at ambient temperature for 45 minutes. 3-Bromo-5-chloropyrazolo[l,5-a]pyrimidine (1.00 g, 4.302 mmol) was added and the reaction stirred at ambient temperature for 3 hours. The reaction mixture was poured into water and the water layer extracted with ether. The combined organic layers were washed with brine, dried over MgSC^ and concentrated in vacuo. The crude material was purified by normal phase chromatography using 2% EtOAc/DCM as the eluent to yield (S)-3-(3-bromopyrazolo[l,5-a]pyrimidin-5-yl)-4-phenyloxazolidin-2-one (1.233 g, 3.433 mmol, 79.80 % yield)., 99395-88-7

The synthetic route of 99395-88-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ARRAY BIOPHARMA INC.; ANDREWS, Steven W.; CONDROSKI, Kevin Ronald; DE MEESE, Lisa A.; FELL, Jay Bradford; FISCHER, John P.; LE HUEROU, Yvan; JOSEY, John A.; KOCH, Kevin; MIKNIS, Gregory F.; RODRIGUEZ, Martha E.; TOPALOV, George T.; WALLACE, Eli M.; XU, Rui; WO2011/29027; (2011); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem