Tag: M.W:200-300

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.95715-86-9,Methyl (R)-N-Boc-2,2-dimethyloxazolidine-4-carboxylate,as a common compound, the synthetic route is as follows.,95715-86-9

To a dry THF solution containing compound 23 (2.5 g,11 mmol), which was prepared from L-serine via step a and areduction by NaBH4, LiCl/dry THF, 0.5 g (20 mmol) of NaH was added. After stirring for 5 min, 3.4 g (22 mmol) of iodoethanewas added. After stirring for 10 h at ambient temperature, 1 mLof H2O was added to the reaction mixture, the solvent wasremoved in vacuo, and the resulting residue was purified by columnchromatography (hexane/ethyl acetate = 4:1) to afford 24 asan oil (1.3 g, 47%).

As the paragraph descriping shows that 95715-86-9 is playing an increasingly important role.

Reference£º
Article; Nagaoka, Hikaru; Nishiwaki, Hisashi; Kubo, Takuya; Akamatsu, Miki; Yamauchi, Satoshi; Shuto, Yoshihiro; Bioorganic and Medicinal Chemistry; vol. 23; 4; (2015); p. 759 – 769;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

108149-63-9, (R)-tert-Butyl 4-(hydroxymethyl)-2,2-dimethyloxazolidine-3-carboxylate is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a dry THF solution containing compound 23 (2.5 g,11 mmol), which was prepared from L-serine via step a and areduction by NaBH4, LiCl/dry THF, 0.5 g (20 mmol) of NaH was added. After stirring for 5 min, 3.4 g (22 mmol) of iodoethanewas added. After stirring for 10 h at ambient temperature, 1 mLof H2O was added to the reaction mixture, the solvent wasremoved in vacuo, and the resulting residue was purified by columnchromatography (hexane/ethyl acetate = 4:1) to afford 24 asan oil (1.3 g, 47%)., 108149-63-9

As the paragraph descriping shows that 108149-63-9 is playing an increasingly important role.

Reference£º
Article; Nagaoka, Hikaru; Nishiwaki, Hisashi; Kubo, Takuya; Akamatsu, Miki; Yamauchi, Satoshi; Shuto, Yoshihiro; Bioorganic and Medicinal Chemistry; vol. 23; 4; (2015); p. 759 – 769;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

452339-73-0, (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A solution of (5R)-5-(2, 2-dimethyl-4H-1, 3-benzodioxin-6-yl)-1, 3-oxazolidin-2-one (Example 1 viii) (503mg) in DMF (10mL) was treated with sodium hydride (60% dispersion in mineral oil) (97mg) under nitrogen for 20 min. A solution of 1-[2-(benzyloxy) ethoxy] -4- (2-bromoethyl) benzene (676mg) in DMF (5 mL) was added and the reaction stirred for a further 2 h. The reaction mixture was concentrated in vacuo then the residue was prified by chromatography (Biotage, 40g) eluting with EtOAc-petroleum ether (2: 3) to give the title compound (585mg). LCMS RT = 3.66 min

452339-73-0, 452339-73-0 (R)-5-(2,2-Dimethyl-4H-benzo[d][1,3]dioxin-6-yl)oxazolidin-2-one 10933894, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; GLAXO GROUP LIMITED; WO2003/91204; (2003); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

131685-53-5, (R)-(-)-4-Benzyl-3-propionyl-2-oxazolidinone is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

TiCl3(OiPr) was first prepared using dry glassware under N2. A solution of 1 M TiCl4 in dichloromethane (3.4 mmol, 3.4 mL) was cooled to 0 C, and Ti(OiPr)4 (1.1 mmol, 0.34 mL) was added dropwise over 5 min. The solution was diluted with anhydrous dichloromethane (3.5 mL) and stirred at 0 C for 15 min. Meanwhile, compound 25a (1.0 g, 4.3 mmol) was dissolved in anhydrous dichloromethane (14 mL) in dry glassware under N2, and DIEA (0.79 mL) was added dropwise over 5 min, with stirring, at room temperature and then cooled to 0 C. The TiCl3(OiPr) solution was added to the 25a solution dropwise over 25 min. The TiCl3(OiPr) flask was rinsed with anhydrous dichloromethane (2 mL), and the rinse added to the combined flask. The solution was stirred at 0 C for 30 min, and then acrylonitrile (0.43 mL, 6.5 mmol) was added dropwise over 10 min, and this solution stirred at 0 C for 4 h. The reaction was quenched with the addition of saturated NH4Cl (25 mL) and H2O (15 mL), and the aqueous layer was extracted with diethyl ether (3 ¡Á 40 mL). The organic extracts were combined and washed with saturated NaHCO3 (55 mL) followed by brine (55 mL), dried over MgSO4 and concentrated in vacuo to yield a yellow oil. The oil was purified using the Flash+ system and a mobile phase of 3:7 ethyl acetate-hexanes (Rf = 0.30), to yield 26a as a very slightly yellow oil (890 mg, 72% yield). 1H NMR (500 MHz, CDCl3): delta 7.35 (dd, J1 = 7.6 Hz, J2 = 7.1 Hz, 2H), 7.30 (d, J = 7.3 Hz, 1H), 7.21 (d, J = 7.1 Hz, 2H), 4.69 (m, 1H), 4.20 (m, 2H), 3.83 (sextet, J = 6.9 Hz, 1H), 3.31 (dd, J1 = 13.4 Hz, J2 = 3.2 Hz, 1H), 2.78 (dd, J1 = 13.3 Hz, J2 = 3.6 Hz, 1H), 2.41 (dt, J1 = 7.7 Hz, J2 = 1.2 Hz, 2H), 2.19 (m, 1H), 1.81 (m, 1H), 1.24 (d, J = 6.9 Hz, 3H).

131685-53-5, As the paragraph descriping shows that 131685-53-5 is playing an increasingly important role.

Reference£º
Article; Girnys, Elizabeth A.; Porter, Vanessa R.; Mosberg, Henry I.; Bioorganic and Medicinal Chemistry; vol. 19; 24; (2011); p. 7425 – 7434;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

139009-66-8, (S)-N-Boc-2,2-dimethyloxazolidine-4-carboxylic Acid is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of 7-amino-6-methoxy-2-(l-methyl-lH-pyrazol-4-yl)-3-(3,4,5- trimethoxybenzoyl)benzo[Z>]furan (entry 21, Table 1) (0.08 Ig, 0.185 mmol), 2,2-dimethyl- 3-(l,l-dimethylethyl-4S-3,4-ozazolidinedicarboxylic acid (0.067g, 0.27 mmol) and N,N- diisopropylethylamine (0.08 ml, 0.46 mmol) in anhydrous CH2Cl2 (1 ml) PyBroP (0.128g, 0.46 mmol) was added at room temperature under N2. The resulting mixture was stirred for Ih at room temperature, than diluted to 15 ml with ethyl acetate and washed with 10% aqueous citric acid (1 ml), water, brine and dried over anhydrous MgSO4 and filtered off. The filtrate was evaporated to dryness under reduced pressure and the residue was purified by flash column chromatography (silica-gel, CH2Cl2/ ethyl acetate 9:1) giving the title compound (0.106g, 87%) as a creamy solid. 1H NMR (300 MHz, CDCl3) 8.09 (s, IH), 7.93 (s, IH), 7.13 (s, 2H), 7.03 (d, J = 8.75 Hz, IH), 6.8 (d, J = 8.75 Hz, IH), 4.1 -4.7 (broad m, 2H), 3.91 (s, 3H), 3.89 (s, 3H), 3.87 (s, 3H), 3.82 (s, 3H), 3.77 (s, 6H), 3.33 (m, IH), 1.23 – 1.7 (m, 14H)., 139009-66-8

139009-66-8 (S)-N-Boc-2,2-dimethyloxazolidine-4-carboxylic Acid 6932187, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; ILIAD CHEMICALS PTY LTD; WO2006/84338; (2006); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

108149-63-9, (R)-tert-Butyl 4-(hydroxymethyl)-2,2-dimethyloxazolidine-3-carboxylate is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step c; 4-Formyl-2,2-dimethyl-oxazolidine-3-carboxylic acid tert-butyl ester (12c); A solution of dimethylsulfoxide (8.10 g, 103.71 mmol) in dichloromethane (10 ml) was added dropwise during 25 min to a solution of oxalyl chloride (6.58 g, 51.9 mmol) in dichloromethane (80 ml) at -78 0C. At the end of the addition the reaction solution was warmed up to -60 0C, and a solution of the alcohol 12b (8.0 g, 34.6 mmol) in dichloromethane (60 ml) was added dropwise during 50 min. N,N-diisopropylethyl amine (36 ml, 200 mmol) in dichloromethane (5 ml) was then added to the reaction mixture -45 0C during 30 min whereafter the reaction mixture was allowed to warm to 0 0C during 10 min. The reaction mixture was then transferred to a separation funnel charged with ice-cold 1 M HCl solution (130 ml). The two phases were separated and the aqueous phase was extracted with dichloromethane. The combined organic extracts were dried and concentrated which gave the title compound (7.89 g, 99%). The residue was used in the next step without further purification.

108149-63-9, 108149-63-9 (R)-tert-Butyl 4-(hydroxymethyl)-2,2-dimethyloxazolidine-3-carboxylate 11053464, aoxazolidine compound, is more and more widely used in various fields.

Reference£º
Patent; MEDIVIR AB; WO2008/107365; (2008); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

108149-63-9, (R)-tert-Butyl 4-(hydroxymethyl)-2,2-dimethyloxazolidine-3-carboxylate is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Methanesulfonyl chloride (0.26 mL, 3.33 mmol) was added to a solution of tert-butyl (4S)-4-(hydroxymethyl)-2,2-dimethyl-1,3-oxazolidine-3-carboxylate (11 I, 0.7 g, 3.03 mmol, prepared as for its enantiomer54) and Et3N (0.68 mL, 4.84 mmol) in CH2Cl2 (10 mL) at 0 oC. After 30 min the mixture was washed with aq. NaHCO3 (sat., 3 x 5 mL), dried and the solvent evaporated. The residue was dissolved in DMF (8 mL) and sodium thiomethoxide (0.42 g,6.05 mmol) added. After stirring at rt for 1 h, Et2O (100 mL) was added and the mixture washed with H2O (4 x 10 mL), brine then dried and the solvent evaporated. The residue was chromatographed (EtOAc-hexanes, 5:95) to give 12 I as a colourless oil (0.59 g, 75%).

108149-63-9, As the paragraph descriping shows that 108149-63-9 is playing an increasingly important role.

Reference£º
Article; Clinch, Keith; Evans, Gary B.; Froehlich, Richard F.G.; Gulab, Shivali A.; Gutierrez, Jemy A.; Mason, Jennifer M.; Schramm, Vern L.; Tyler, Peter C.; Woolhouse, Anthony D.; Bioorganic and Medicinal Chemistry; vol. 20; 17; (2012); p. 5181 – 5187;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

95715-86-9,95715-86-9, Methyl (R)-N-Boc-2,2-dimethyloxazolidine-4-carboxylate is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Preparation of (S)-2-amino-/V-(7-ethoxy-4-(3,4,5-trimethoxybenzyl)isoquinolin-8-yl)-3- hvdroxypropanamide dihydrochloride 26 (S)-3-( e/t-Butoxycarbonyl)-2,2-dimethyloxazolidine-4-carboxylic acidTo a solution of methyl (S)-3-terf-butyl 4-methyl 2,2-dimethyloxazolidine-3,4- dicarboxylate (0.35 g, 1 .35 mmol) in THF (10 mL) in a 50 mL round-bottomed flask equipped with a magnetic stirrer was added a solution of LiOH monohydrate (62 mg, 1 .48 mmol) in H2O (5 mL) and the mixture was stirred overnight at RT. THF was evaporated at 40C under vacuum and the residue was diluted with H2O (25 mL) before acidification with 3% aqueous HCI to pH = 4. The solution was extracted with Et2O (3×50 mL) and the organic layers were combined, washed with brine (20 mL), dried over Na2SO4, filtered and concentrated at 40C under vacuum to give (S)-3- (fe/t-butoxycarbonyl)-2,2-dimethyloxazolidine-4-carboxylic acid CCH 34168-1 as a colorless oil (147 mg, 44% yield).CCH 34168-1MW: 469.4; Yield: 21 %; Colorless oil.

The synthetic route of 95715-86-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; EXONHIT S.A.; LEBLOND, Bertrand; TAVERNE, Thierry; BEAUSOLEIL, Eric; CHAUVIGNAC, Cedric; CASAGRANDE, Anne-Sophie; DESIRE, Laurent; WO2011/151423; (2011); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

95715-86-9, Methyl (R)-N-Boc-2,2-dimethyloxazolidine-4-carboxylate is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

95715-86-9, In stageA harvesting (R) -2,2- dimethyl – oxazolidine-3,4-dicarboxylic acid 3-t- butyl ester 4-methyl ester (11.4g, 44.0mmol) was dissolved in dichloromethane (100mL), added at -78 Diisopropyl aluminum hydride (1.5M in toluene, 66mL). The temperature was raised to room temperature and stirred for 18 hours. After completion of the reaction, methanol (20 mL) and sodium hydroxide (1N, 200mL) was slowly added to the organic solution is then extracted with methylene chloride, dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure and the residue was separated by column chromatography the title compound were harvested (9.7g, 95%).

As the paragraph descriping shows that 95715-86-9 is playing an increasingly important role.

Reference£º
Patent; LG Life Sciences Ltd.; Park, Heui Sul; Koo, Sun Young; Kim, Hyoung Jin; Lee, Sung Bae; Kwak, Hyo Shin; Artemov, V.; Kim, Soon Ha; (34 pag.)CN105636956; (2016); A;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem

95715-86-9, Methyl (R)-N-Boc-2,2-dimethyloxazolidine-4-carboxylate is a oxazolidine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,95715-86-9

Referring to FIG. 12, the synthesis of D-threo-PPMP may be via stereoselective addition of phenyl cuprate to D-Gamer aldehyde. The syn adduct, which leads to the D-threo isomer, will be the major product. The minor L-erythro isomer (approximately 5%) can be removed by crystallization from chloroform at the late stage of the synthesis. Synthesis starts with a four-step synthetic procedure for the production of D-Garner Aldehyde from D-serine. We have synthesized L-Gamer Aldehyde from L-serine at the kilogram scale utilizing the same method for the production of safingol. Garner Aldehyde was obtained in 28% overall yield at 98+% ee purity without chromatography. Phenyl cuprate will be generated in situ by the reaction of copper(I) iodide and phenyl magnesium bromide. The addition of phenyl cuprate to D-Garner Aldehyde will yield intermediate 6. The deprotection of intermediate 6 with HCl produces D-threo-1-phenyl-2-amino-propane-1,3-diol-7. The intermediate 7 is reacted with activated palmitic acid and followed by base hydrolysis to form intermediate 8. The primary hydroxy group of intermediate 8 will be converted to the mesylate, and then substituted with morpholine to yield the final product D-threo-PPMP. Our synthetic plan is an efficient, practical synthesis to the enantiomerically pure PPMP. Most of the reactions described have been successfully conducted at the kilogram scale in our kilo lab. It is anticipated that the initial 2 g bach can be delivered within 6 to 8 weeks after the desired PPMP enantiomer is identified. Modifications to the current method of synthesis and other methods of synthesis of D-threo-PPMP are readily known to one of skill in the art.

The synthetic route of 95715-86-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Maurer, Barry James; Reynolds, Charles Patrick; US2005/101674; (2005); A1;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem