Tag: M.W:0-100

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.14678-02-5,5-Amino-3-methylisoxazole,as a common compound, the synthetic route is as follows.

General procedure: A mixtureof CSA (23.2mg, 0.10mmol), 5-amino-3-methylisoxazole,(1.00mmol), isatin (1.00mmol), and -diketones(1.00mmol) in 5mL EtOH was irradiated with ultrasoundof low power at 70?C for the period of time indicated inScheme 2 and Table 3. After completion of the reaction, asindicated by TLC monitoring, the resultant solid was washedwith water and crystallized from ethanol to give productsa-d., 14678-02-5

As the paragraph descriping shows that 14678-02-5 is playing an increasingly important role.

Reference£º
Article; Pelit, Emel; Journal of Chemistry; vol. 2017; (2017);,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1750-42-1,Isoxazol-3-amine,as a common compound, the synthetic route is as follows.

General procedure: The heterocyclic amines (1a-h, 10 mmol) were dissolved in 10 mL water followed by addition of 40 mL of 6M HCl and the systems were cooled in the ice-salt bath down to -10C. Afterwards, an aqueous solution of NaNO2 (10 mmol, 0.7g/5 mL H2O) was added slowly drop by drop and stirred vigorously on a magnetic stirrer. After 15 min, fresh solution of 4-hydroxycoumarin (3, 10 mmol, 1.62 g) in 10 mL NaOH (10 wt.) was added. Intensively colored and voluminous precipitates (4a-h) were obtained immediately which were stirred 15 min. in the bath and 30 min. on room temperature. Finally, they were filtrated by vacuum, washed 3 times with distilled water and dried on air. The purification was carried out by the technique of recrystallization using ethanol as solvent.

1750-42-1, As the paragraph descriping shows that 1750-42-1 is playing an increasingly important role.

Reference£º
Article; Jashari, Ahmed; Imeri, Faik; Ballazhi, Lulzime; Shabani, Agim; Mikhova, Bozhana; Draeger, Gerald; Popovski, Emil; Huwiler, Andrea; Bioorganic and Medicinal Chemistry; vol. 22; 9; (2014); p. 2655 – 2661;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1072-67-9,5-Methylisoxazol-3-amine,as a common compound, the synthetic route is as follows.

General procedure: A solution of Aryl-or heteroary-amine (1.0 mol) in chloroformor dichloromethane was stirred with potassium carbonate(1.5 mol). To this solution was then added 1.5 mol of chloroacetylchloride under cold. Reaction was stirred overnight at room temperature.After completion of reaction (monitored by TLC), solventwas removed under reduced pressure. To the solid mass, ice coldwater was added. The solid thus obtained was then filtered driedand recrystallized from ethanol., 1072-67-9

1072-67-9 5-Methylisoxazol-3-amine 66172, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Article; Bhanushali, Umesh; Rajendran, Saranya; Sarma, Keerthana; Kulkarni, Pushkar; Chatti, Kiranam; Chatterjee, Suvro; Ramaa; Bioorganic Chemistry; vol. 67; (2016); p. 139 – 147;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

1072-67-9, 5-Methylisoxazol-3-amine is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: 5-Methyl-3-aminoisoxazole (2 mmol) and aromatic aldehyde (2 mmol) were added to absolute ethanol (4~6 mL) with electromagnetic stirring for about 1 h, followed by adding p-nitroacetophenone (2 mmol) and concentrated HCl (0.1~0.2 mL) with continuous stirring. TLC monitored the reaction progress. Upon completion, the suspension was cooled overnight in a refrigerator (4C). The resulting solid was subsequently collected by filtration. The filter cake was washed successively with water (2×3 mL) and absolute ethanol (2×3 mL), dried to afford the corresponding crude product. The crude product was recrystallized in toluene or a mixed solvent of ethyl acetate and cyclohexane, dried in vacuum to give the pure product with 57.1% ~ 94.9% yields. All compounds were identified by 1H NMR, 13C NMR, ESI-MS and HR MS.

1072-67-9, The synthetic route of 1072-67-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Liu, Jinyu; Zhou, Zuwen; Liu, Jian; Yan, Jufang; Fan, Li; Tang, Xuemei; Liu, Jie; Chen, Feifei; Yang, Dacheng; Letters in drug design and discovery; vol. 16; 8; (2019); p. 835 – 845;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.89102-73-8,Isoxazol-3-ylmethanol,as a common compound, the synthetic route is as follows.,89102-73-8

A mixture of 10.0 g (100.9 mmol) isoxazol-3-ylmethanol and THF is cooled to 0C and 4.0 g (100.9 mmol) 60% NaH are added in small portions. The reaction mixture is stirred for 45 min, and then 16.4 g (84.6 mmol) 2-chloro-5-bromo-pyrimidine in DMF is added. The reaction mixture is stirred for 45 min at RT, then cooled to 0C and diluted with water. The precipitate is filtered off, washed with water and dried yielding 20.1 g 3-[(5-bromopyrimidin-2-yl)oxymethyl]isoxazole .

The synthetic route of 89102-73-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; BLUM, Andreas; GODBOUT, Cedrickx; HEHN, Joerg, P.; PETERS, Stefan; (74 pag.)WO2017/194453; (2017); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

14678-05-8, Isoxazol-5-amine is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred slurry of 4-methyl-3-[6-(4-methylpiperazin-l-yl)-4-oxoquinazolin- 3(4H)-yl]benzoic acid (0.3 g) and DMF (0.05 ml) in methylene chloride (30 ml) at 350C was added thionyl chloride (0.3 ml). The resultant yellow solution was stirred at 45C for 1.5 hours. The reaction mixture was concentrated to give a yellow / orange solid. The solid was stirred in methylene chloride (30 ml) at room temperature with 5-aminoisoxazole (0.11 g) and pyridine (0.2 ml) for 18 hours. The reaction mixture was washed with saturated NaHCO3 solution, brine and concentrated. The residue was purified by column chromatography on a silica column using initially methylene chloride and then a 9:1 mixture of methylene chloride and methanol as eluent. There was thus obtained the title compound (70 mg); NMR Spectrum: (DMSOd6) 2.19 (s, 3H), 2.25 (s, 3H), 2.49 (m, 4H), 3.30 (m, 4H), 6.43 (d, IH), 7.50 (d, IH), 7.62 (s, IH), 7.65 (m, 2H)3 8.08 (s, IH), 8.10 (m, IH), 8.13 (s, IH), 8.50 (d, IH), 12.04 (s, IH); Mass Spectrum: MH-H+ 444., 14678-05-8

The synthetic route of 14678-05-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ASTRAZENECA AB; ASTRAZENECA UK LIMITED; WO2006/90143; (2006); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

14678-02-5, 5-Amino-3-methylisoxazole is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A mixtureof CSA (23.2mg, 0.10mmol), 5-amino-3-methylisoxazole,(1.00mmol), isatin (1.00mmol), and -diketones(1.00mmol) in 5mL EtOH was irradiated with ultrasoundof low power at 70?C for the period of time indicated inScheme 2 and Table 3. After completion of the reaction, asindicated by TLC monitoring, the resultant solid was washedwith water and crystallized from ethanol to give productsa-d., 14678-02-5

14678-02-5 5-Amino-3-methylisoxazole 84590, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Article; Pelit, Emel; Journal of Chemistry; vol. 2017; (2017);,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.14678-02-5,5-Amino-3-methylisoxazole,as a common compound, the synthetic route is as follows.

(a) 5-Amino-4-bromo-3-methylisoxazole 5-Amino-3-methylisoxazole (0.98 g, 10 mmol) was dissolved in chloroform (15 ml) and cooled to 0 C. N-Bromosuccinimide (1.78 g, 10 mmoles) was added in small portions over a period of 10 min. The stirring was continued for another 10 minutes at 0 C. The reaction mixture was diluted with chloroform (50 ml), washed with water (2*50 ml) and the organic layer was dried over magnesium sulfate. Removal of the solvent under reduced pressure gave the crude product, which was purified by column chromatography using 9: 1, hexanes/ethyl acetate as the eluent, to give 5-amino-4-bromo-3-methylisoxazole (1.55 g, 87% yield).

14678-02-5, 14678-02-5 5-Amino-3-methylisoxazole 84590, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; Texas Biotechnology Corporation; US5571821; (1996); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

1750-42-1, Isoxazol-3-amine is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A solution of 3-(l-(2,4-difluorophenyl)-7-ethyl-6-oxo-6,7-dihydro-lH-pyrazolo[4,3- b]pyrazin-5-yl)-5-fluoro-4-methylbenzoic acid (360 mg, 0.84 mmol) in 5.0 mL of DCM was treated with oxalyl chloride (0.84 mL of 2.0 M in DCM solution, 1.68 mmol) followed by two drops of DMF while cooling in an ice bath at 00C. It was stirred at this temperature for 15 min then allowed to stir at RT for 45 min. The reaction mixture was then concentrated under reduce pressure to remove the excess oxalyl chloride. The residue was dissolved in 5.0 mL of DCM, treated with 3-aminoisoxazole (212 mg, 2.52 mmol) followed by Et3N (0.18 mL, 1.26 mmol) and stirred for 18 h. The reaction mixture was treated with 15 mL saturated NaHCO3 and extracted with DCM (2 x 15 mL). The combined DCM layers were dried over MgSCv Purification on the ISCO (12 g column, 20-70% EtOAc in hexanes) afforded 3-(l-(2,4-difluorophenyl)-7-ethyl-6-oxo-6,7- dihydro-lH-pyrazolo[4,3-b]pyrazin-5-yl)-5-fluoro-N-(isoxazol-3-yl)-4-methylbenzamide as a light yellow amorphous solid. MS (ES+): 495.1 (M+H)+.

1750-42-1, Big data shows that 1750-42-1 is playing an increasingly important role.

Reference£º
Patent; AMGEN INC.; WO2009/117156; (2009); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

14678-02-5, 5-Amino-3-methylisoxazole is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: General procedure forthe preparation of oxazolo[5,4-b]quinoline- fused spirooxindoles 4a-t: A reaction of isatin(1 mmol),beta-diketone (1 mmol) and5-amino-3-methylisoxazole (1 mmol) were mixed and irradiated in a closed vesselin the absence of any solvent in a Synthos 3000 microwave reactor at 700 W, 14 bar,and 110 C for 10 min. The reaction was monitored by TLC. Then, thereaction mixture was filtered hot and the resulting solid products were washed with ethanol, dried in air and recrystallized from ethanol.

14678-02-5, As the paragraph descriping shows that 14678-02-5 is playing an increasingly important role.

Reference£º
Article; Yuvaraj, Panneerselvam; Manivannan, Karthikeyan; Reddy, Boreddy S.R.; Tetrahedron Letters; vol. 56; 1; (2015); p. 78 – 81;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem