Heterocyclic Building Blocks-isoxazole

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.

[00501] Step 4: 5-(4-Bromo-phenyl)-3-methyl-isoxazole-4-carboxylic acid: Lithium hydroxide (2g, 47.7mmol) was added to a solution of 5-(4-bromo-phenyl)-3-methyl-isoxazole-4-carboxylic acid methyl ester (7g, 23.6mmol) in MeOH (50mL) and H20 (lOmL), and the reaction was stirred at 60C for 1 hour. Acidic work-up 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; AMIRA PHARMACEUTICALS, INC.; BRISTOL-MYERS SQUIBB COMPANY; BRITTAIN, Jason, Edward; SEIDERS, Thomas, Jon; HUTCHINSON, John, Howard; KING, Christopher, David; ROSSO, Victor, W.; WO2012/78805; (2012); A1;,
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

) 3,5-Dimethyl-4-iodoisoxazole 64 (5.00 g, 22.4 mmol, 1.0 eq.), triethylamine (9.07 g, 89.7 mmol, 12.5 ml_, 4.0 eq.) and copper iodide (213 mg, 1.12 mmol, 0.05 eq.) were solubilized / suspended in dry dimethylformamide (50 ml_) and degassed with argon bubbling. After trimethylsilyl acetylene 44 (2.62 g, 26.9 mmol, 3.7 ml_, 1.2 eq.) dropwise addition, trans- dichlorobis(triphenylphosphine)palladium (II) (787 mg, 1.12 mmol, 0.05 eq.) was added portionwise and reaction vessel was sealed. Reaction mixture was stirred at 75C for 4h. After cooling down at room temperature, reaction mixture was diluted in 200 ml_ of diethylether and washed with a saturated solution of sodium chloride (2×100 ml_), dried over magnesium sulfate and solvents were evaporated under vacuum. The residue was purified by flash chromatography [Biotage ; column AIT 120g; eluant: Cyclohexane/ EtOAc; gradient: 100/0 -> 90/10 (12CV)] affording compound 65 (3.2 g, 74% yield) as a dark brown oil., 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; UNIVERSITE DE STRASBOURG; CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE; CENTRE HOSPITALIER REGIONAL UNIVERSITAIRE DE BESANCON; UNIVERSITE DE FRANCHE-COMTE; MISLIN, Gaetan; SCHALK, Isabelle; PLESIAT, Patrick; PAULEN, Aurelie; (142 pag.)WO2019/243273; (2019); A1;,
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

Step 6: Ethyl 5-(4-(2-chloro-4-((5-cvclopropyl-3-(2,6-dichlorophenvnisoxazol-4- yl)methoxy)phenyl)-4-hvdroxypiperidin-1 -yl)-1 -isopropyl-1 /-/-pyrazole-3-carboxylate (39f) To a suspension of intermediate 39e (230 mg, 0.56 mol), (5-cyclopropyl-3-(2,6- dichlorophenyl)isoxazol-4-yi)methanol (158 mg, 0.56 mol) and PPh3 (239 mg, 1.1 mmol) in toluene (10 ml) was added DIAD (226 mg, 1.1 mmol) dropwise at 0C. The resulting mixture was stirred at rt for 4 h. The reaction mixture was diluted with H20, extracted with EtOAc (20 mL x 3) and the organic layers were concentrated to dryness. The residue was and purified by preparative TLC (EtOAc/PE=1/1 ) to give the title compound (220 mg)., 946426-89-7

The synthetic route of 946426-89-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; GILEAD SCIENCES, INC.; KINZEL, Olaf; KREMOSER, Claus; BLOMGREN, Peter, A.; CURRIE, Kevin, S.; KROPF, Jeffrey, E.; SCHMITT, Aaron; WATKINS, William, J.; XU, Jianjun; GEGE, Christian; (92 pag.)WO2016/96116; (2016); A1;,
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

EXAMPLE 124 5-(isoxazol-5-oyl)amino-3-(1-methylpiperidin-4-yl)-1H-indole Beginning with 13 mg (0.056 mMol) 5-amino-3-(1-methylpiperidin-4-yl)-1H-indole and 8.21 mg (0.062 mMol) isoxazole-5-carbonyl chloride, 10.4 mg (57%) of the title compound were recovered. MS(m/e): 325(M+)

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

Reference£º
Patent; ELI LILLY AND COMPANY; EP832650; (1998); A2;; ; Patent; ELI LILLY AND COMPANY; EP824917; (1998); A2;; ; Patent; Eli Lilly and Company; US5708008; (1998); 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.19788-37-5,4-(Chloromethyl)-3,5-dimethylisoxazole,as a common compound, the synthetic route is as follows.

5-ethyl-6-methyl-4-phenylthieno[2,3-d] pyrimidin-2(1H)-one (2a,2 g, 7.4 mmol) and 4-(chloromethyl)-3,5-dimethylisoxazole (0.94 mL,8.9 mmol) were put into 100 mL round bottom flask, then 50 mL dimethylsulfoxide as solvent and 0.1 g potassium carbonate used ascatalyst for the reaction were added. The reaction mixture was heatedat 110 C for 1.5 h. The reaction mixture was then diluted with 100 mLdichloromethane and washed with brine (50 mL¡Á3). The organicsolvent was removed under vacuum. The residue dissolved in ethylacetate and purified with silica gel column chromatography (producteluted at 100% [v/v] ethyl acetate/petroleum ether) to afford 1-((3,5-dimethylisoxazol-4-yl)methyl)-5-ethyl-6-methyl-4-phenylthieno[2,3-d]pyrimidin-2(1H)-one (3a) as a yellow crystal.

19788-37-5, 19788-37-5 4-(Chloromethyl)-3,5-dimethylisoxazole 88246, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Article; Ma, Junlong; Chen, Heng; Yang, Jie; Yu, Zutao; Huang, Pan; Yang, Haofeng; Zheng, Bifeng; Liu, Rangru; Li, Qianbin; Hu, Gaoyun; Chen, Zhuo; Bioorganic and Medicinal Chemistry; vol. 27; 9; (2019); p. 1871 – 1881;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.19788-37-5,4-(Chloromethyl)-3,5-dimethylisoxazole,as a common compound, the synthetic route is as follows.

Example 10-39a 2-((3,5-dimethylisoxazol-4-yl)methyl)-2H-tetrazol-5-amine 2H-tetrazol-5-amine (1.29 g, 12.5 mmol), 4-(chloromethyl)-3,5-dimethylisoxazole (1.56 mL, 12.5 mmol) and potassium carbonate (1.73 g, 15.5 mmol) in DMF (20 mL) were heated to 80 C. with stirring for 16 hours. The reaction was cooled to room temperature, diluted with dichloromethane (100 mL) and washed consecutively with brine and water. The organics were dried over sodium sulfate and concentrated with rotary evaporation. The crude product was purified by silica gel chromatography (0-10% gradient ethyl acetate/dichloromethane) affording 2-((3,5-dimethylisoxazol-4-yl)methyl)-2H-tetrazol-5-amine as a white crystalline solid (970 mg, 40% yield) MS M+H calculated 195.1, found 195., 19788-37-5

As the paragraph descriping shows that 19788-37-5 is playing an increasingly important role.

Reference£º
Patent; Senomyx, Inc.; US2009/274632; (2009); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

36958-61-9, 5-(Bromomethyl)-3-methylisoxazole is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Sodium hydride (60% w/w) (0.46 g, 1 1 .4 mmol) was added portionwise to a solution of 7-benzylsulfanyl-4-bromo-2H-isoquinolin-1 -one (2.82 g, 8.14 mmol) in DMF (40 mL) at 0 C. After 1 h 5-(bromomethyl)-3-methyl-1 ,2-oxazole (1 .72 g, 9.77 mmol) was added and the mixture stirred at ambient temperature overnight. EtOAc (150 mL) and saturate aq. NaHC03 (150 mL) were added and the mixture stirred for 5 min. The EtOAc layer was separated and the aqueous layer washed with EtOAc (100 mL). The combined organic extracts were passed through a hydrophobic frit, concentrated under reduced pressure and purified by automated column chromatography, eluent 0-100% EtOAc in iso-hexane, yielding 7-benzylsulfanyl-4-bromo-2-[(3-methylisoxazol-5-yl)methyl]isoquinolin-1 -one (1 .78 g, 4.03 mmol,LCMS (high pH): RT 1 .40 min, [M+H]+ 441 .0, 94% purity

36958-61-9, 36958-61-9 5-(Bromomethyl)-3-methylisoxazole 10607354, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; CANCER RESEARCH TECHNOLOGY LIMITED; MCGONAGLE, Alison E.; JORDAN, Allan; WASZKOWYCZ, Bohdan; HUTTON, Colin; WADDELL, Ian; HITCHIN, James R.; SMITH, Kate Mary; HAMILTON, Niall M.; (497 pag.)WO2016/92326; (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.62348-13-4,Isoxazole-5-carbonyl chloride,as a common compound, the synthetic route is as follows.,62348-13-4

A mixture of Compound 53 (70 mg, 0.11 mmol), 4-dimethylaminopyridine (30 mg, 0.25 mg), and isoxazole-5-carbonyl chloride (35 muL, 0.22 mmol) in 3.0 mL of dichloromethane was stirred at 21 C. for 5 hours. The reaction was quenched with saturated sodium bicarbonate solution, and aqueous layer was extracted with dichloromethane. The combined organic layers were dried over sodium sulfate and concentrated to afford a crude product, which was chromatographed to give the desired product. 1H NMR (300 MHz, CDCl3): delta 0.23 (s, 6H), 0.74 (m, 2H), 0.97 (m, 5H), 1.82 (m, 2H), 2.22 (m, 2H), 3.12 (m, 2H), 4.35 (t, J=6.9 Hz, 2H), 5.14 (m, 2H), 5.24 (s, 2H), 5.40 (d, J=17.4 Hz, 1H), 5.71 (d, J=17.4 Hz, 1H), 6.98 (d, J=1.8 Hz, 1H), 7.30 (m, 6H), 7.69 (t, J=6.0 Hz, 1H), 7.82 (t, J=8.4 Hz, 1H), 8.05 (d, J=7.8 Hz, 1H), 8.24 (d, J=8.4 Hz, 1H), 8.36 (d, J=1.8 Hz, 1H).

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

Reference£º
Patent; BioNumerik Pharmaceuticals, Inc.; US2009/99224; (2009); 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.36958-61-9,5-(Bromomethyl)-3-methylisoxazole,as a common compound, the synthetic route is as follows.,36958-61-9

STR613 Ethylenediamine (30 g) was dissolved in 120 g of acetonitrile, and a solution of 17.6 g of 5-bromomethyl-3-methylisoxazole in 30 ml of acetonitrile was added dropwise at 5 to 10 C. After the addition, the mixture was stirred for 1 hour with a care taken not to permit the temperature of the reaction system to rise above 20 C. Then, most of the volatile materials were removed under vacuum (less than 2 mmHg) while maintaining the bath temperature at 20 C. Ice water was added to the residue, and the mixture was extracted with dichloromethane. The dichloromethane layer was dehydrated, and dichloromethane was distilled off under reduced pressure to give 10.0 g of N-(3-methyl-5-isoxazolylmethyl)ethylenediamine (purity about 95%) as a colorless oil. NMR spectrum (delta in CDCl3): NH, NH2: 1.47 (ppm), –CH2 CH2: 2.23, –CH3: 2.7, –CH2 –: 5.8, Hetero-H: 5.9.

As the paragraph descriping shows that 36958-61-9 is playing an increasingly important role.

Reference£º
Patent; Nihon Tokushu Noyaku Seizo K. K.; US4742060; (1988); 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.3356-89-6,5-Chloro-3-phenylisoxazole,as a common compound, the synthetic route is as follows.

General procedure: To a stirred suspension of NaH (60% in mineral oil, 440 mg, 11 mmol, prewashed with hexane) in anhydrous THF (20 mL) was added the appropriate alcohol (15 mmol) at r.t. and the reaction mixture was stirred for 0.5 h. Next, 5-chloro-3-phenylisoxazole (2) (1.0 g, 5.6mmol) was introduced as a solid and the mixture was refluxed for 1 h. After cooling to r.t., the mixture was quenched with H2O (20 mL). For 4a and 4b, the resulting precipitate was collected, washed with H2O and recrystallized from hexane-Et2O mixture. For 3a, the reaction mixture was extracted with CH2Cl2 (3 ¡Á 20 mL). The combined organic layers were dried (Na2SO4) and concentrated in vacuo to give isoxazole 3a. 5-tert-Butoxy-3-phenylisoxazole (4c) was synthesized analogously using commercially available potassium tert-butoxide. 5-Methoxy-3-phenylisoxazole (3a) Yield according to general procedure A: 877 mg (89%); yield accordingto general procedure B: 745 mg (76%); colorless solid. 1H NMR (400 MHz, CDCl3): delta = 7.82-7.72 (m, 2 ), 7.51-7.41 (m, 3 ),5.55 (s, 1 H), 4.06 (s, 3 )., 3356-89-6

As the paragraph descriping shows that 3356-89-6 is playing an increasingly important role.

Reference£º
Article; Rostovskii, Nikolai V.; Agafonova, Anastasiya V.; Smetanin, Ilia A.; Novikov, Mikhail S.; Khlebnikov, Alexander F.; Ruvinskaya, Julia O.; Starova, Galina L.; Synthesis; vol. 49; 19; (2017); p. 4478 – 4488;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem