Tag: M.W:200-300

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.925006-96-8,Ethyl 5-(4-methoxyphenyl)isoxazole-3-carboxylate,as a common compound, the synthetic route is as follows.

General procedure: The ethyl ester intermediate 15 (2mmol) was dissolved in 98 ethanol/120 water (3:1, 10mL), and 19 NaBH4 (0.38g, 10mmol) was added. The reaction mixture was sealed with a balloon and stirred overnight at room temperature. Upon the completion of reduction, the solution was partitioned between EtOAc (40mL) and 1N HCl (25mL). The organic layer was washed with saturated NaHCO3 and brine, dried over Na2SO4, concentrated in a rotovapor. The alcohol was used directly for next step without purification., 925006-96-8

The synthetic route of 925006-96-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Bi, Fangchao; Song, Di; Zhang, Nan; Liu, Zhiyang; Gu, Xinjie; Hu, Chaoyu; Cai, Xiaokang; Venter, Henrietta; Ma, Shutao; European Journal of Medicinal Chemistry; vol. 159; (2018); p. 90 – 103;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2552-54-7,3-(Benzyloxy)isoxazole-5-carboxylic acid,as a common compound, the synthetic route is as follows.

A solution of Example 87D (0.1 g, 0.252 mmol), N-ethyl-N-isopropylpropan-2-amine (0.220 ml, 1.262 mmol) and 3-(benzyloxy)isoxazole-5-carboxylic acid (0.066 g, 0.303 mmol) in N,N- dimethylformamide (1.941 ml) was treated with l-[bis(dimethylamino)methylene]-lH- 1,2,3 – triazolo[4,5-b]pyridinium 3-oxid hexafluorophosphate (0.099 g, 0.260 mmol) and the reaction mixture was stirred at room temperature for 20 hours. The reaction mixture was poured into 12 mL water and the resulting suspension was filtered. The solid was washed with water and dried under vacuum. Purification by flash chromatography on silica gel (AnaLogix IntelliFlash 280 system) eluting with a gradient of from 0% to 4% methanol in dichloromethane afforded the title compound. lH NMR (400 MHz, DMSO-d6) delta ppm 2.58 – 2.69 (m, 2H), 3.72 (s, 3H), 3.74 – 3.86 (m, 2H), 4.26 – 4.35 (m, 2H), 5.31 (s, 2H), 6.27 (d, J = 1.6 Hz, 1H), 6.41 – 6.54 (m, 1H), 6.69 (s, 1H), 7.02 (d, J = 5.0 Hz, 1H), 7.1 1 – 7.28 (m, 3H), 7.29 – 7.54 (m, 5H), 8.20 (d, J = 4.9 Hz, 1H), 1 1.57 (brs, 1H). MS (ESI+) m/z 525.1 (M+H)+, 2552-54-7

As the paragraph descriping shows that 2552-54-7 is playing an increasingly important role.

Reference£º
Patent; ABBVIE INC.; ABBVIE PHARMACEUTICAL TRADING (SHANGHAI) CO., LTD.; TONG, Yunsong; BRUNCKO, Milan; CLARK, Richard F.; CURTIN, Michael L.; FLORJANCIC, Alan S.; FREY, Robin R.; GONG, Jianchun; HANSEN, Todd M.; JI, Zhiqin; LAI, Chunqiu; MASTRACCHIO, Anthony; MICHAELIDES, Michael; MIYASHIRO, Juliem; RISI, Roberto M.; SONG, Xiaohong; TAO, Zhi-fu; WOODS, Keith W.; ZHU, Guidong; PENNING, Thomas; SOUERS, Andrew; GOSWAMI, Rajeev; IQUTURI, Omprakash Reddy; DABBEERU, Madhu Babu; WO2014/139328; (2014); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

1083224-23-0, 5-(2,4-Difluorophenyl)isoxazole-3-carboxylic acid is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,1083224-23-0

To a solution of rac-(3R*,4R*)-4-amino-3-methyl-piperidine-1 ,3-dicarboxylic acid 1-tert-butyl ester 3-methyl ester (225 mg, 0.83 mmol) in DMF (5 mL) at RT is added 5-(2,4- difluorophenyl)isoxazole-3-carboxylic acid (205 mg, 0.91 mmol). DIPEA (0.283 mL, 1.65 mmol) is then added followed by HATU (346 mg, 0.91 mmol). The reaction mixture is stirred overnight at RT. The crude mixture is purified by prep. LC-MS in basic conditions. The title compound is obtained as a pale yellow solid. LC-MS method A: tR = 1.01 Min; [M+H]+ = 480.14.

The synthetic route of 1083224-23-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; IDORSIA PHARMACEUTICALS LTD; AISSAOUI, Hamed; GUERRY, Philippe; LEHEMBRE, Francois; POTHIER, Julien; POUZOL, Laetitia; RICHARD-BILDSTEIN, Sylvia; YUAN, Shuguang; (273 pag.)WO2018/19929; (2018); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.954230-39-8,Ethyl 3-(4-fluorophenyl)-5-methylisoxazole-4-carboxylate,as a common compound, the synthetic route is as follows.

954230-39-8, Step d: [3-(4-Fluoro-phenyl)-5-methyl-isoxazol-4-yl]-methanol To a solution of 3-(4-fluoro-phenyl)-5-methyl-isoxazole-4-carboxylic acid ethyl ester (3.0 g, 12 mmol) (6.18 g, 25 mmol) in THF (320 mL) was added portionwise lithiumaluminiumhydride (528 mg, 14 mmol) at 0 C. and the reaction mixture was stirred at room temperature for 3 h. The mixture was then cooled to 0 C. and water (518 muL) added followed by sodium hydroxide (15% solution, 518 muL) and then again water (1.5 mL) and the mixture then stirred overnight at room temperature. The precipitate was then filtered off and washed with THF. The combined washings and filtrate were then evaporated. Purification by chromatography (SiO2, heptane:ethyl acetate=100:0 to 1:1) afforded the title compound (1.8 g, 71%) which was obtained as a white solid. MS: m/e=208.1 [M+H]+.

954230-39-8 Ethyl 3-(4-fluorophenyl)-5-methylisoxazole-4-carboxylate 22309061, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; Hoffmann-La Roche Inc.; Dott, Pascal; Grassmann, Olaf; Kammerer, Michael; Manns, Joachim; Schwitter, Urs; Thomas, Andrew; Wyttenbach, Nicole; US2013/172329; (2013); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1228689-61-9,Methyl 5-(4-bromophenyl)-3-methylisoxazole-4-carboxylate,as a common compound, the synthetic route is as follows.

General procedure: To an oven dried 5 mL microwave vessel was addedPd(dppf)Cl2¡¤CH2Cl2 (4 mol%), halide/pseudohalide (1 equiv),boron coupling partner (1 equiv), and Cs2CO3 (3 equiv). Thevessel was then capped and purged with N2 before addition ofCyrene (1 mL, 0.25 M) and H2O (1.8 mL). The reaction mixturewas heated to 50 C and maintained at this temperature withstirring for 5 h before the vessel was vented and decapped. Thesolution was then diluted with Et2O (10 mL) and washed withwater (2 ¡Á 20 mL) and brine (2 ¡Á 20 mL). The organics were thenpassed through a hydrophobic frit and concentrated underreduced pressure to give a residue, which was purified by flashchromatography (silica gel) to afford the title compound., 1228689-61-9

As the paragraph descriping shows that 1228689-61-9 is playing an increasingly important role.

Reference£º
Article; Wilson, Kirsty L.; Murray, Jane; Jamieson, Craig; Watson, Allan J. B.; Synlett; vol. 29; 5; (2018); p. 650 – 654;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

1018297-63-6, (3-(4-Fluorophenyl)-5-methylisoxazol-4-yl)methanol is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

a) 2-[3-(4-Fluoro-phenyl)-5-methyl-isoxazol-4-ylmethyl]-isoindole-1,3-dione To a solution of [3-(4-fluoro-phenyl)-5-methyl-isoxazol-4-yl]-methanol (5.0 g, 24 mmol) in THF (290 mL) was added phthalimide (4.7 g, 32 mmol) and triphenylphosphine (8.4 g, 32 mmol) at ambient temperature under an argon atmosphere. Then a solution of diethyl azodicarboxylate (40% in toluene, 12.5 mL, 32 mmol) was added and the reaction mixture was stirred for 1 h at room temperature. Concentration and repeated trituration and then purification by chromatography (SiO2, heptane:ethyl acetate=100:0 to 1:1) afforded the title compound (6.0 g, 74%) as a white solid. MS: m/e=337.1 [M+H]+.

1018297-63-6, 1018297-63-6 (3-(4-Fluorophenyl)-5-methylisoxazol-4-yl)methanol 28473136, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; Buettelmann, Bernd; Jakob-Roetne, Roland; Knust, Henner; Thomas, Andrew; US2009/143385; (2009); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

7063-99-2, Ethyl 5-phenylisoxazole-3-carboxylate is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,7063-99-2

The ethyl 5-phenyl-isoxazole-3-carboxylate (1g, 4.6mmol) and hydrazine hydrate (0.69g, 13.8mmol) was dissolved in 20mL of ethanol and refluxed overnight.The solid was precipitated by cooling to room temperature, suction filtered, and dried to give a solid, about 0.63 g, yield: 69%.

As the paragraph descriping shows that 7063-99-2 is playing an increasingly important role.

Reference£º
Patent; China Pharmaceutical University; Wang Jinxin; Shang Yanguo; Song Meng; (13 pag.)CN110156708; (2019); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

946426-89-7, 5-Cyclopropyl-3-(2,6-dichlorophenyl)isoxazole-4-methanol is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Preparation of compound A6e: [Show Image] To the solution of benzotrizole (17.85 g, 194.3 mmol) in 100 mL of dry DCM was added SOCl2 (23.09 g, 73.7 mmol) at 0C, and stirred at room temperature for 1 hour. The resulting mixture was added to the solution of compound A5e (55 g, 194.3 mmol) in 500 mL of dry DCM at room temperature and stirred for 1.5 h. 120 mL of water was added to the mixture for quench, and the mixture was extracted with DCM. The organic layer was washed with 1 N aq. NaOH solution, dried over Na2SO4, filtered, concentrated and purified by chromatography on silica gel (eluent: PE/EtOAc = 10/1) to give 47.4 g of compound A6e as a white solid (Yield: 81 %). 1H NMR (400 MHz, CDCl3): delta 1.23-1.33 (m, 4H), 2.14 (m, 1H), 4.40 (s, 2H), 8.31 (s, 2H)., 946426-89-7

946426-89-7 5-Cyclopropyl-3-(2,6-dichlorophenyl)isoxazole-4-methanol 45790382, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; Phenex Pharmaceuticals AG; EP2289883; (2011); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.51677-09-9,Methyl 5-phenylisoxazole-3-carboxylate,as a common compound, the synthetic route is as follows.

51677-09-9, To a solution of 1-2 (1.0 g, 4.9 mmol) in MeOH (10 mL) was added sodium hydroxide solution (20 mL, 4 M). The reaction mixture was stirred at room temperature for 2 hours and concentrated under reduced pressure to remove MeOH. The aqueous phase was acidified with aqueous HCl (1 M) till pH=3 and the mixture was extracted with EtOAc, dried with anhydrous Na2SO4, filtered and concentrated to give the crude product. The crude product was purified by silica gel chromatography eluted to give product 1-2 (0.7 g, 79.5%). MS m/z [ESI]: 190.0 [M+1].

The synthetic route of 51677-09-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SUZHOU SINOVENT PHARMACEUTICALS CO., LTD.; WANG, Yonghui; ZHU, Yan; ZHOU, Juan; GAO, Yujun; WANG, Shiqun; WANG, Dong; LIU, Wandeng; SHEN, Ximing; HONG, Binbin; LIU, Tao; WU, Yaodong; LI, Chunqi; (35 pag.)US2018/271846; (2018); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1136-45-4,5-Methyl-3-phenylisoxazole-4-carboxylic acid,as a common compound, the synthetic route is as follows.

Dissolve the free piperazino-piperidine of Example 11, step 6 (1.7 g, 3.3 mmol) in CHCl3 (30 ml;=Stock solution A). Add 250 ul of stock solution A (0.027 mmol) to a slurry of 0.15 g (0.14 mmol ) of resin bound cardodiimide (prepared by reacting Argopore-Cl resin with 1-(3-dimethyl-aminopropyl)3-ethyl carbodiimide in DMF at 100 C. in DMF (1.5 ml) in a polyethylene SPE cartridge. To this mixture add 75 ul of a 1 M solution of 5-methyl-3-phenylisoxazole-4-carboxylic acid in DMF (0.075 mmol), and HOBT (24 ul of a 1M solution in DMF). Shake this mixture for 14 h, filter and add 0.1 g of Amberlyst-15 resin (0.47 mmol) to the filtrate. Shake for 1 to 2 h, filter and wash the resin twice with each of the following solvents THF, CH2Cl2 and CH3OH, then wash with THF and CH2Cl2. Treat the resin with 2M NH3 in CH3OH (1 time for 30 min, and 1 time for 5 min). Combine and concentrate the filtrates under reduced pressure to afford the title compound. LCMS found MH+=599.1 (calculated MW 598); TLC Rf=0.74 (CH2Cl2/CH3OH/NH4OH (95/5/0.5)).

1136-45-4, The synthetic route of 1136-45-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Schering Corporation; US6391865; (2002); B1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem