Day: October 16, 2020

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.2510-36-3,3,5-Dimethylisoxasole-4-carboxylic acid,as a common compound, the synthetic route is as follows.

General procedure: The aldehyde (0.8 equivalent) and amine (0.7 equivalent) were dissolved in methanol (2.0 mL) and stirred for two to 3 h depending upon the starting material. The acid (100 mg, 1 equivalent) and isocyanide (0.7 equivalent) were added in the reaction mixture and further stirred. The reaction mixture was monitored using TLC analysis.Water (4 mL) was added upon completion of the reaction.The resulted solid was filtered off and dissolved in ethyl acetate(10 mL), washed with water (2 3 mL) and dried over sodium sulphate. The crude product was purified using silica gel column chromatography. The ethyl acetate:hexane (6:4) solvent system was used for the purification of these compounds.

2510-36-3, The synthetic route of 2510-36-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Makane, Vitthal B.; Krishna, Vagolu Siva; Krishna, E. Vamshi; Shukla, Manjulika; Mahizhaveni; Misra, Sunil; Chopra, Sidharth; Sriram, Dharmarajan; Dusthackeer, V.N. Azger; Rode, Haridas B.; European Journal of Medicinal Chemistry; vol. 164; (2019); p. 665 – 677;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.206055-91-6,(3-(4-Bromophenyl)isoxazol-5-yl)methanol,as a common compound, the synthetic route is as follows.

General procedure: (0.184 g,1 mmol) was added into a 25 mL one-necked round-bottom flask with 5mL of dry iso-PrOH, and the mixture was stirred in a cold bath. Then a solution of Et3N (0.101 g, 1 mmol) and (3-phenyl-isoxazole-5-yl)-methanol (0.175 g, 1 mmol) in 10mL dry iso-PrOH was slowly added to the reaction system using a syringe. The mixture was stirred in a cold bath for an additional 30 min, and then tem-perature was allowed to reach room temperature. After reaction completion (monitored by thin layer chromatography, TLC), the reaction mixture was evaporated under reduced pressure, and the residue was purified by column chromatog-raphy on silica gel using petroleum ether and ethyl acetate (V/V, 5:1?2:1) as eluant. Fractions with similar Rf values were combined to obtain the target compound 3a., 206055-91-6

206055-91-6 (3-(4-Bromophenyl)isoxazol-5-yl)methanol 11032412, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Article; Yong, Jianping; Lu, Canzhong; Wu, Xiaoyuan; Letters in drug design and discovery; vol. 15; 5; (2018); p. 463 – 474;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

10557-85-4, 3,5-Dimethyl-4-iodoisoxazole is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 4-bromophenylboronic acid (1G, 5MMOL), 3, 5-dimethyl-4-iodoisoxazole (0.93g, 4.2 MMOL), bis (triphenylphospine) palladium (LI) chloride (59mg, 2MOL%), NAHC03 (1.06g, 12. 6MMOL) in DME (5mL) and H20 (5mL) was heated to 80 C under N2 for 18h. The reaction mixture was partitioned between 1 N HCI and EtOAc. The organic layer was washed with saturated NAHC03, brine, dried over NA2SO4AND concentrated. The residue was purified by silica gel chromatography (5% EtOAc in hexanes) to give the title compound as a white solid (0.9g, 86%). H NMR (CDCl3) : No. 2. 26 (s, 3H), 2.40 (s, 3H), 7.13 (d, 2H, J = 8.3 Hz), 7.58 (d, 2H, J = 8.3 Hz)., 10557-85-4

10557-85-4 3,5-Dimethyl-4-iodoisoxazole 613883, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; PFIZER INC.; WO2004/74270; (2004); A2;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

51135-73-0, Ethyl 5-methylisoxazole-4-carboxylate is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,51135-73-0

(iii) 5-Methylisoxazol-4-yl carboxylic acid Ethyl 5-methylisoxazol-4-yl carboxylate (65 g) was heated under reflux in 10 M 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.

As the paragraph descriping shows that 51135-73-0 is playing an increasingly important role.

Reference£º
Patent; Lilly Industries Limited; US4983619; (1991); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.21169-71-1,Isoxazole-5-carboxylic acid,as a common compound, the synthetic route is as follows.

Example Llsoxazole-5-carboxylic acid [2-(2-o-tolyl-chroman-6-yloxy)-thiazol-5-ylmethyl]-amideTo a solution of [2-(2-o-tolyl-chroman-6-yloxy)-thiazol-5-ylmethyl]amine (150 mg, 0.43 mmol) in DMF (2 ml), 1 -(3-dimethylaminopropyl)-3-ethylcarbodiimidehydrochloride (1 14 mg, 0.60 mmol, 1 .4 eq), 1 -hydroxy-benzotriazole (81 mg, 0.60 mmol, 1 .4 eq) and N-methylmorpholine (107 mg, 1 .07 mmol, 2.5 eq) and isoxazole-5- carboxylic acid (72 mg, 0.64 mmol, 1 .5 eq) were added. The mixture was stirred for 16 h, then diluted with water, and the aqueous layer was extracted with ethyl acetate. The combined organic layers were washed with a diluted aqueous solution of sodium carbonate and brine, dried over sodium sulfate and filtered, and the solvent was removed under reduced pressure. The crude product was purified by column chromatography (silica gel, ethyl acetate/methanol gradient), lsoxazole-5-carboxylic acid [2-(2-o-tolyl-chroman-6-yloxy)-thiazol-5-ylmethyl]-amide (1 12 mg, 59%) was obtained as a white solid.

21169-71-1, The synthetic route of 21169-71-1 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SANOFI; CZECHTIZKY, Werngard; WESTON, John; RACKELMANN, Nils; PODESCHWA, Michael; ARNDT, Petra; WIRTH, Klaus; GOEGELEIN, Heinz; RITZELER, Olaf; KRAFT, Volker; BELLEVERGUE, Patrice; McCort, Gary; WO2013/37724; (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.51677-09-9,Methyl 5-phenylisoxazole-3-carboxylate,as a common compound, the synthetic route is as follows.

51677-09-9, 9-B. Methyl 4-bromo-5-phenylisoxazole-3-carboxylate; [00180] A solution of methyl 5-phenylisoxazole-3-carboxylate (100 mg, 0.492 mmol) and N-bromosuccinimide (119 mg, 0.669 mmol) in 5% fuming nitric acid in acetic acid (2 mL) was heated to 150 0C for 10 minutes via microwave. The reaction mixture was concentrated and purified by silica gel chromatography with hexanes/ethyl acetate (10/1) to afford methyl 4-bromo-5-phenylisoxazole-3- carboxylate (108 mg). The compound had an HPLC ret. time = 3.21 min. – Column: YMC S5 COMBISCREEN 4.6X50 mm; Gradient time: 4 min; Flow rate = 4 ml/min; Solvent A = 10% MeOH – 90% Water – 0.2% H3PO4; Solvent B = 90% MeOH – 10% water – 0.2% H3PO4; Start % B = O; Final % B = 100. LC-MS: M+1 = 284+.

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

Reference£º
Patent; BRISTOL-MYERS SQUIBB COMPANY; WATTERSON, Scott, Hunter; DYCKMAN, Alaric, J.; PITTS, William, J.; SPERGEL, Steven, H.; WO2010/85581; (2010); A1;,
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, General procedure: Sequentially, acid chloride (1.5 equiv) including furan-2-carbonylchloride, m-fluorobenzoylchloride, p-fluorobenzoylchloride, isoxazole-5-carbonyl chloride, adamantane-1-carbonylchloride, or naphthalene-1-sulfonylchloride (1.5 equiv) and quinoline-8-sulfonyl chloride (1.5 equiv), was added to the resulting solutionin the presence of NEt3 (3.0 equiv) and stirredat reflux for 4 h. When the sequentialone-pot multicomponent synthesis reaction was completed, the reactionmixture was added to saturate sodium bicarbonate (15 mL) and extracted withdichloromethane (15 mL ¡Á 2). Thecombined organic layer was washed saturated aqueous NaHCO3 (15 mL),dried over MgSO4, filtered, and concentrated under reduced pressure.The residue solution was purified by column chromatography on silica gel togive the corresponding N,O-disubstitutedglycolamides 5a-f, 7-11, 12a-e, and 13a-b in 66-84 % yields.

As the paragraph descriping shows that 62348-13-4 is playing an increasingly important role.

Reference£º
Article; Lu, Shi-Han; Yen, Wan-Ping; Tsai, Henry J.; Chen, Chien-Shu; Wong, Fung Fuh; Tetrahedron; vol. 71; 38; (2015); p. 6749 – 6758;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.21169-71-1,Isoxazole-5-carboxylic acid,as a common compound, the synthetic route is as follows.

21169-71-1, Example 88. The title compound was prepared by using the same procedure as described in example 83. MS (ESI): m/z 753.15 (M+H).

As the paragraph descriping shows that 21169-71-1 is playing an increasingly important role.

Reference£º
Patent; ENANTA PHARMACEUTICALS, INC.; WO2009/76173; (2009); A2;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.110256-15-0,5-Cyclopropylisoxazole-3-carboxylic acid,as a common compound, the synthetic route is as follows.

In a 100-mL round-bottom flask 5 -cyclopropylisoxazole-3 -carboxylic acid (100 mg, 0.65 mmol, 1.00 equiv), tert-butyl N-[(lr,4r)-4-aminocyclohexyl]carbamate (154 mg, 0.72 mmol, 1.10 equiv) and TEA (198 mg, 1.96 mmol, 3.00 equiv) were dissolved in 10 ml dichloromethane, then HATU (496 mg, 1.31 mmol, 2.00 equiv) was added to the solution. The resulting solution was stirred overnight at room temperature. The mixture was then concentrated under vacuum. The residue was purified on a silica gel column with ethyl acetate/petroleum ether (4: 1). This resulted in 210 mg (92%) tert-butyl (lr,4r)- 4-(5 -cyclopropylisoxazole-3 -carboxamido)cyclohexylcarbamate as a white solid. LCMS (method A, ESI): RT=1.48 min, m/z =294.0 [M-56]+.

110256-15-0, The synthetic route of 110256-15-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; EPIZYME, INC.; CHESWORTH, Richard; FOLEY, Megan Alene Cloonan; KUNTZ, Kevin Wayne; MITCHELL, Lorna Helen; PETTER, Russell C.; SCHWARTZ, Carl Eric; (62 pag.)WO2016/40511; (2016); 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.108511-97-3,Isoxazol-4-amine,as a common compound, the synthetic route is as follows.

Will be equipped with a stir bar,A 250 mL round bottom flask of the Dean-Stark trap and reflux condenser was removed from the oven.Cooling under vacuum,And backfill with argon.Under argon flow,Toluene (100 mL),(Structural formula is as follows) Compound 6 synthesized(11.91g, 19.82mmol),4-aminoisoxazole (1.665 g, 19.82 mmol) and p-toluenesulfonic acid monohydrate (1-2 mol%) were introduced into the reaction flask.Then reflux under stirring,A certain amount (about 0.36 g) of water was collected up to the bottom of the Dean-Stark trap.The reaction mixture was then filtered through celite.And evaporate volatile organic compounds,It is then distilled by Kugelrohr (boiling point is 105 C pressure of about 1 mTorr)Yielded 9.68 g of product(E)-6-(tert-butyl)-2-(1-(3-(isoxazol-4-yl)imino)butyl)-2,5-diisopropyl-4-phenyl- Synthesis of 1H-pyrrole-3-carboxamido)benzo[b]thiophene-3-carboxylic acid ethyl ester (Compound 7),Is a yellow crystal,The yield was 73.2%., 108511-97-3

The synthetic route of 108511-97-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Li Huaxu; (8 pag.)CN108191845; (2018); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem