Month: October 2020

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.3405-77-4,5-Methylisoxazole-3-carboxylic acid,as a common compound, the synthetic route is as follows.

To a solution of carboxylic acid (5 g) in CH2Cl2 (400 ml) at 0 C. was added N(OCH3)CH3.HCl (11.5 g), DEC (15.1 g), HOBt (5.3 g) and NMM (43 ml) and stirred for 14 hr. The mixture was diluted with CH2Cl2 (100 ml) and the organic layer was washed with 10percent HCl, saturated sodium bicarbonate and brine, dried with Na2SO4, and concentrated in vacuo to afford 5.74 g of crude product (85percent)., 3405-77-4

The synthetic route of 3405-77-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Schering Corporation; US2004/106794; (2004); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

14441-90-8, 5-Phenylisoxazole-3-carboxylic acid is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step-4: N-(2-(5-(methoxymethyl)-1,3,4-thiadiazol-2-yl)ethyl)-5-phenylisoxazole-3-carboxamide To an ice-cooled suspension of 5-phenyl-isoxazole-3-carboxylic acid (2.08 g, 0.011 mol) in DCM (40 mL) was slowly added T3P solution (10.5 mL, 0.016 mol, 50% solution in EtOAc) followed by addition of triethylamine (2.23 g, 0.022 mol) and solution of 2-(5-methoxymethyl-[1,3,4]thiadiazol-2-yl)-ethylamine (1.88 g, ca. 0.011 mol) in DCM (10 mL). The reaction mixture was stirred at room temperature for 18 h and quenched onto ice-water (150 mL). Separated DCM layer was washed with saturated NaHCO3 solution (3*75 mL), water (2*50 mL) and brine (100 mL). Organic layer was dried over anhydrous Na2SO4 and concentrated under vacuum to obtained crude solid product. The crude solid was triturated in diethyl ether (50 mL), filtered and dried to afford desired product. Yield: 48%; Appearance: off-whites solid Analytical data: 1H NMR (400 MHz, CDCl3): delta 7.79-7.76 (m, 2H), 7.50-7.46 (m, 3H), 7.41 (br, 1H), 6.93 (s, 1H), 4.82 (s, 2H), 3.99-3.94 (m, 2H), 3.45 (s, 3H), 3.42-3.41 (m, 2H). LC-MS: (M+H)+ 345.0; HPLC Purity: 99.87% at 254 nm & 99.32% at 220 nm.

14441-90-8, As the paragraph descriping shows that 14441-90-8 is playing an increasingly important role.

Reference£º
Patent; PROTEOSTASIS TEHRAPEUTICS, INC.; Bastos, Cecilia M.; Munoz, Benito; Tait, Bradley; (48 pag.)US2017/1993; (2017); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

2510-36-3, 3,5-Dimethylisoxasole-4-carboxylic acid is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Compound 1f (R1=4-Cl, R2=6-Br, X=O) (70 mg, 0.16 mmol),3,5-Dimethylisoxazole-4-carboxylic acid (31 mg, 0.22 mmol),1-hydroxybenzotriazole (HOBt) (30 mg, 0.22 mmol) and1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDCI) (42 mg, 0.22 mmol),in room temperature,The reaction was carried out in anhydrous dichloromethane (5 ml) for 12 hours.Wash with saturated brine,Extracted with dichloromethane,Dry over anhydrous sodium sulfate,The organic layer was separated by silica gel column chromatography.Obtained a pale yellow powder of 37 mg.The yield was 41%., 2510-36-3

As the paragraph descriping shows that 2510-36-3 is playing an increasingly important role.

Reference£º
Patent; Sun Yat-sen University; Zhang Hui; Bai Chuan; Pan Ting; Wu Liyang; (17 pag.)CN108610301; (2018); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

62348-13-4, Isoxazole-5-carbonyl chloride is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

62348-13-4, Compound 61: {2-[(6,7-Dimethoxy-4-quinolyl)oxy]-5-methylphenyl}(5-isoxazolyl)methanone; 4-(2-Bromo-4-methylphenoxy)-6,7-dimethoxyquinoline (100 mg) was dissolved in tetrahydrofuran (6 ml) to prepare a solution which was then cooled to -78C. A 1.59 M n-butyllithium/hexane solution (0.4 ml) was added to the solution, and the mixture was stirred at -78C for 20 min. Isoxazole-5-carbonyl chloride (0.2 ml) was added to the reaction solution, and the mixture was stirred at room temperature overnight. Further, water was added to the reaction solution, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and saturated brine and was dried over anhydrous sodium sulfate. The solvent was removed therefrom by distillation under the reduced pressure, and the residue was purified by thin layer chromatography using acetone-chloroform to give the title compound (27 mg, yield 26%). 1H-NMR (CDCl3, 400 MHz): delta 2.48 (s, 3H), 4.01 (s, 3H), 4.02 (s, 3H), 6.46 (d, J = 5.4 Hz, 1H), 6.81 (d, J = 1.9 Hz, 1H), 7.13 (d, J = 8.3 Hz, 1H), 7.24 (s, 1H), 7.40 (s, 1H), 7.49 (dd, J = 1.9, 8.3 Hz, 1H), 7.59 (d, J = 1.7 Hz, 1H), 8.25 (d, J = 1.9 Hz, 1H), 8.46 (d, J = 5.4 Hz, 1H) Mass spectrometric value (ESI-MS, m/z): 391 (M+1)+

The synthetic route of 62348-13-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; KIRIN BEER KABUSHIKI KAISHA; EP1548008; (2005); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

1228689-61-9, Methyl 5-(4-bromophenyl)-3-methylisoxazole-4-carboxylate is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

[00478] Step 4: 5-(4-Bromo-phenyl)-3-methyl-isoxazole-4-carboxylic acid[00479] Lithium hydroxide (2g, 48mmol) was added to a solution of 5-(4-bromo-phenyl)-3-methyl- isoxazole-4-carboxylic acid methyl ester (39mmol) in methanol (50mL) and water (lOmL), and the reaction was stirred at 60C for 1 hour. Acidic work-up gave the title compound.

1228689-61-9, The synthetic route of 1228689-61-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; AMIDRA PHARMACEUTICALS, INC.; BRITTAIN, Jason, Edward; SEIDERS, Thomas, Jon; KING, Christopher, David; WO2011/159550; (2011); A2;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

62348-13-4,62348-13-4, Isoxazole-5-carbonyl chloride is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A solution of the corresponding acyl chloride (9.18 mmol) in chloroform (25 mL) was slowly added dropwise to a stirred solution of methyl imidoselenocarbamate hydroiodide (4.59 mmol) in dry chloroform (40 mL) and pyridine (5 mL). The mixture was stirred for 48 h at room temperature. Solvents were removed under vacuum by rotatory evaporation and the residue was treated with water (100 mL) and purified as indicated in Table 1. The spectroscopic data are shown in Table 2.

The synthetic route of 62348-13-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Font, Maria; Lizarraga, Elena; Ibanez, Elena; Plano, Daniel; Sanmarti?, Carmen; Palop, Juan A.; European Journal of Medicinal Chemistry; vol. 66; (2013); p. 489 – 498;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

51135-73-0,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.51135-73-0,Ethyl 5-methylisoxazole-4-carboxylate,as a common compound, the synthetic route is as follows.

(iii) 5-Methylisoxazol-4-yl carboxylic acid Ethyl 5-methylisoxazol-4-yl carboxylate (65 g) was heated under reflux in 10M HCl (500 ml) for 3 hours. On cooling the product crystallized out. This was filtered and dried giving 42 g of a white crystalline solid, m.p. 134-136 C.

51135-73-0 Ethyl 5-methylisoxazole-4-carboxylate 7009317, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; Lilly Industries Limited; US4892963; (1990); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

10558-25-5, 4-Bromo-3,5-dimethylisoxazole is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

4-bromo-3,5-dimethylisoxazole (1.0 equiv.), 3,5-difluorophenylboronic acid (1.3 equiv.), and PdCl2(dppf).CH2Cl2 adduct (0.1 equiv.) were combined in a microwave vial and 1,4-Dioxane (0.3 M) was added followed by 2M sodium carbonate (2.0 equiv.). The mixture was purged with N2, sealed and heated at 120 C. for 40 min in the microwave. The mixture was partitioned between EtOAc and brine. The organic layer was dried over sodium sulfate, filtered and concentrated to afford a black solid. The crude black material was purified by ISCO SiO2 chromatography eluting with 0-100% DCM in Heptanes to afford 4-(3,5-difluorophenyl)-3,5-dimethylisoxazole in 60% yield. LC/MS (m/z): 210.1 (MH+), Rt=0.88 min. 1H NMR (400 MHz, ) delta 6.73-6.87 (m, 3H), 2.43 (s, 3H), 2.29 (s, 3H).

10558-25-5, The synthetic route of 10558-25-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Burger, Matthew; Ding, Yu; Han, Wooseok; Nishiguchi, Gisele; Rico, Alice; Simmons, Robert Lowell; Smith, Aaron R.; Tamez, JR., Victoriano; Tanner, Huw; Wan, Lifeng; US2012/225061; (2012); 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

10298] Acetophenone (3 g, 25 mmol) was taken up in 30 mE of dry toluene and NaR (780 mg, 32 mmol) was then added. The resulting reaction mixture was stirred at room temperature for 60 minutes. A solution of diethyl oxalate (5.5 g, 37.5 mmol) in dry toluene (25 mE) was then added drop wise and stirred at room temperature for 1 hout The reaction mixture was concentrated under reduced pressure and the resulting residue was diluted with ice watet The precipitated solids were collected by filtration and dried to afford 2.85 g of ethyl 2,4-dioxo-4-phenylbutanoate (52% yield) as a yellow solid. This material (2.85 g, 12.9 mmol) was taken up in EtOR (25 mE) along with NH2OH.HC1 (1.16 g, 16.8 mmol) and then stirred under reflux for 3 hours. The reaction mixture was concentrated under reduced presresulting sure. The resulting residue was diluted with water and extracted with EtOAc. The combined organic layers were washed with H20, dried (Na2SO4) and concentrated under reduced pressure. Purification by silica gel chromatography (pentanes/EtOAc) afforded ethyl 5-phenylisoxazole-3-car- boxylate (2.53 g, 90% yield) as a white solid. This material (2.53 g, 11.6 mmol) was taken up in THF/H20 (45 mE/S mE) along with EiOH.H20 (1.0 g, 23.3 mmol) and thereaction mixture was stirred at room temperature for 2 hours. The reaction mixture was then concentrated under reduced pressure. Sufficient 1 N HC1 was added to the resulting residue to bring the pH to about 5. The resulting solids were collected by filtration and dried under high vacuum to afford 1.5 g of 5-phenylisoxazole-3-carboxylic acid (69%) as a white solid. 5-Phenylisoxazole-3-carboxylic acid was then coupled with (4Z,7Z,10Z,13Z,16Z,19Z)- N-((R)-1 -amino-3-(((R)-3-amino-4-((1 ,3-dihydroxypro- pan-2-yl)amino)-2-methyl-4-oxobutan-2-yl)disulfanyl)-1 – oxopropan-2-yl)docosa-4,7, 10,13,16,1 9-hexaenamide using the same amide coupling procedure as detailed in example 4. The final product was purified by silica gel chromatography (CH2C12/MeOH). MS, calculated for C43H59N50752:821.39; found 822 [M+H].

7063-99-2 Ethyl 5-phenylisoxazole-3-carboxylate 571142, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; Catabasis Pharmaceuticals, Inc.; Vu, Chi B.; (90 pag.)US2017/342046; (2017); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

108655-63-6, 3-(Trifluoromethyl)isoxazol-5-amine is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 1 3-Trifluoromethyl-5-hydroxyisoxazole A solution of 36% HCl (9.12 g, 15 eq.) and n-propanol (9.0 ml) was added to 5-amino-3-trifluoromethylisoxazole (0.91 g, 6.0 mmole) from Preparation 1 and heated at reflux for 23 hours. The reaction mixture was cooled, extracted with methylene chloride and distilled under reduced pressure to give 0.006 g (0.7%) of the titled compound as a colorless liquid, b.p. 35-37 C./1.4 mmHg., 108655-63-6

The synthetic route of 108655-63-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Shionogi & Co., Ltd.; US5082947; (1992); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem