Heterocyclic Building Blocks-isoxazole

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

Compound 6 (11.8g, 28.06mmol) was added to absolute ethanol (150 mL), followed by gradual addition of isoxazole-5-carbonyl chloride (10.2g, 77.55mmol), The reaction was heated to reflux with stirring. After about 8 hours, the reaction was completed and TLC was used to monitor the end of the reaction.point. After the reaction solution was allowed to stand for cooling, suction filtration, and the filter cake was washed with a small amount of anhydrous ethanol to obtain a white solid product N-(((4-(2,3-dihydro-[1,4]dioxacyclohexane) Alkeno[2,3-b]pyridin-7-yl)-7-methoxy-2,2-dimethylpyridin-3-yl)methyl)sulfonyl)isoxazole-5-carboxamide, 13.8 g, yield 95.6%.

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

Reference£º
Patent; Zeng Qingqiang; (11 pag.)CN108570056; (2018); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

59669-59-9, 3-(tert-Butyl)isoxazol-5-amine is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,59669-59-9

General procedure: To a stirred solution of ynamide 4a (57.0 mg, 0.2 mmol) in DCE (2.0 mL, 0.1 M) was added isoxazol-5-amine 8a (21.6 mg, 0.22 mmol, 1.1 equiv), followed by AgNTf2 (3.9 mg, 5 mol %). The resulting mixture was placed into an oil bath of 80 C with stirring for 2 h generally, monitoredby TLC. After completion, the reaction mixture was cooled and the desired product was precipitated. The solid was filtered and washed with DCM twice, then dried in a vacuum drying oven at 50 C for 24 h to give the pure pyrrole product 10aa, 75.8 mg, 99% yield. For products 10ab-ae, 10ka-la, the purification method was as follows: evaporation of volatiles under reduced pressure to give the residue, which was suffered from column chromatographyon silica gel (petrol ether/ethyl acetate 1:1-1:2, v/v) to afford the pure pyrrole.

As the paragraph descriping shows that 59669-59-9 is playing an increasingly important role.

Reference£º
Article; Cao, Ziping; Zhu, Jiekun; Liu, Li; Pang, Yuanling; Tian, Laijin; Sun, Xuejun; Meng, Xin; Beilstein Journal of Organic Chemistry; vol. 15; (2019); p. 2623 – 2630;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1228690-37-6,(R)-1-Phenylethyl (5-(4-bromophenyl)-3-methylisoxazol-4-yl)carbamate,as a common compound, the synthetic route is as follows.

Step 6: l-{4′-[3-Methyl-4-((R)-l-phenyl-ethoxycarbonylamino)-isoxazol-5-yl]-biphenyl-4- yl}-cyclopropanecarboxylic acid: [5-(4-Bromo-phenyl)-3-methyl-isoxazol-4-yl]-carbamic acid (R)- l- phenyl-ethyl ester (0.248g, 0.62mmol), 4-(l’-carboxyl-cyclopropyl)phenylboronic acid (0.160g, 0.62mmol), and sodium carbonate (0.155g, 1.85mmol) were combined in 2: 1 DME:H20. The solution was purged with N2 for 10 minutes, and then bis(triphenylphosphine)palladium(II) dichloride (0.047g, 0.06mmol) was added. The reaction was purged with N2 for an additional 10 minutes, and then stirred in a sealed tube at 80C for 2 hours. The mixture was partitioned between EtOAc and H20, and the aqueous layer was extracted with EtOAc. The combined organic layers were dried over MgSO/t, filtered, and concentrated, and the residue was purified by silica gel chromatography to give the title compound. Mass spec, data (M+H) = 483.

1228690-37-6, The synthetic route of 1228690-37-6 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;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.123770-62-7,Ethyl 5-(hydroxymethyl)isoxazole-3-carboxylate,as a common compound, the synthetic route is as follows.

INTERMEDIATE 6 – PREPARATION OF Ethyl 5-(bromomethyl)isoxazole-3-carboxylate.; Method 1 Carbon tetrabromide (5.44 g; 16.39 mmol) was added to the solution of triphenylphosphine (4.34 g, 16.39 mmol) in THF (50 mL) and the resulting mixture was stirred at room temperature for 15 min. To this green suspension was added a solution of ethyl 5-(hydroxymethyl)isoxazole-3-carboxylate (1.87 g, 10.93 mmol) in THF (10 mL) and the resulting reaction mixture was stirred overnight at room temperature. The solid material was removed by filtration. The filtrate was concentrated under reduced pressure and the residue was purified by flash chromatography on silica gel (eluent: 15 to 100% dichloromethane in heptane) to afford 1.73 g (68 %) of ethyl 5-(bromomethyl)isoxazole-3- carboxylate as a solid.

123770-62-7, 123770-62-7 Ethyl 5-(hydroxymethyl)isoxazole-3-carboxylate 8027233, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; KATHOLIEKE UNIVERSITEIT LEUVEN, K.U. LEUVEN R&;D; reMYND; GRIFFIOEN, Gerard; VAN DOOREN, Tom; ROJAS DE LA PARRA, Veronica; MARCHAND, Arnaud; ALLASIA, Sara; KILONDA, Amuri; CHALTIN, Patrick; WO2010/142801; (2010); A1;,
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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

To a solution of 6-(5-aminomethyl-pyridin-3-yl)-1-methyl-3,4-dihydro-1H-quinolin-2-one (example 36, 0.047 g, 0.177 mmol) in DMF (1 mL) were added 3,5-dimethylisoxazole-4-carboxylic acid (0.037 g, 0.266 mmol) and TBTU (0.063 g, 0.195 mmol) followed by Huenig’s base (0.048 g, 0.372 mmol) and the reaction mixture was stirred at room temperature over night. The mixture was purified directly by reverse phase HPLC on a Gemini-NX column, eluting with a 20 to 98% MeOH-H2O (0.05% TEA) gradient to give the title compound (0.041 g, 59%) as a colorless solid. MS: 391.3 (M+H+)

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

Reference£º
Patent; Aebi, Johannes; Amrein, Kurt; Hornsperger, Benoit; Knust, Henner; Kuhn, Bernd; Liu, Yongfu; Maerki, Hans P.; Mayweg, Alexander V.; Mohr, Peter; Tan, Xuefei; Zhou, Mingwei; US2013/72679; (2013); A1;,
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Isoxazole | C3H3NO – PubChem

42831-50-5, 5-Methylisoxazole-4-carboxylic acid is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step A 5-Methyl-isoxazole-4-carboxylic acid [2-(4-methoxy-phenylamino)-phenyl]-amide To N-(4-methoxy-phenyl)-benzene-1,2-diamine di-hydrochloride salt (0.942 g, 3.28 mmol), 5-methyl-isoxazole-4-carboxylic acid (0.500 g, 3.93 mmol), Et3N (4.6 ml, 32.8 mmol) and DMAP. (cat.) in CH2Cl2 (10 ml) was added PPAA as a 50% solution in EtOAc (3.0 ml, 4.92 mmol). The reaction was stirred at room temperature overnight, diluted with EtOAc (100 ml) and washed with sat. NaHCO3 (2*30 ml) and brine (1*30 ml), dried (MgSO4), filtered and concentrated by vacuum. The resultant oil was subjected to flash chromatography (SiO2, biotage, 25% EtOAc/hexanes) to give 5-methyl-isoxazole-4-carboxylic acid [2-(4-methoxy-phenylamino)-phenyl]-amide as an oil (0.729 g, 2.26 mmol, 69%). MS 324 (M+1).

42831-50-5, The synthetic route of 42831-50-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Chesworth, Richard; Gegnas, Laura D.; US2004/2524; (2004); 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, To a solution of CH30NHCH3. HCI (780mg) and acid chloride (1g) in CH2CI2 at 0 C was added dry pyridine (1. 35ml) to afford a heterogenous mixture The solution was warmed to room temperature and stirred overnight. 1 M HCI was added to the reaction and the organic layer was separated, washed with brine, dried with Na2SO4, filtered, and concentrated in vacuo to give 1 g of product (85%).

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

Reference£º
Patent; SCHERING CORPORATION; PHARMACOPEIA DRUG DISCOVERY, INC.; WO2005/68460; (2005); 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, To a solution of the above material (0.300 g, 0.708 mmol) in CH2Cl2 (3 mL), isoxazole-5-carbonyl chloride (0.1024 g, 0.78 mmol) and triethylamine (0.13 mL, 0.92 mmol) were added. The resulting solution was stirred at room temperature overnight, and partitioned between CH2Cl2 and water. The organic extract was washed with brine, dried over Na2SO4, filtered and concentrated. The residue was subjected to silica gel chromatography eluted with 10-40% ethyl acetate in hexanes to provide the title compound that gave a proton NMR spectrum consistent with theory and a mass ion (ES+) of 519.3 for M+H+(35Cl): 1H NMR (300 MHz, MeOH-d4) delta 8.59 (s, 1H), 7.83 (d, J=5.6 Hz, 1H), 7.60 (q, J=8.0 Hz, 1H), 7.31-7.23 (m, 4H), 7.11 (s, 1H), 7.02 (d, J=8.1 Hz, 1 H), 6.69 (d, J=5.6 Hz, 1 H), 5.23 (q, J=6.8 Hz, 1H), 4.86 (s, 3H), 1.48 (d, J=7.0 Hz, 3H).

62348-13-4 Isoxazole-5-carbonyl chloride 2736707, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; Kuduk, Scott D.; Bock, Mark G.; Feng, Dong-Mei; Wai, Jenny Miu-Chun; US2004/29920; (2004); 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.33282-15-4,5-(4-Hydroxyphenyl)isoxazole-3-carboxylic acid,as a common compound, the synthetic route is as follows.

Example 39 5-(4-Hydroxy-phenyl)-isoxazole-3-carboxylic acid {2-[4-(5-fluoro-2-trifluoromethyl-benzoyl)-piperazin-1-yl]-2-oxo-ethyl}-amide DIPEA (153 mg, 0.2 mL, 1.18 mmol) followed by HOBT (48 mg, 0.35 mmol) and EDCI (69 mg, 0.35 mmol) were added to a stirred solution of 5-(4-Hydroxy-phenyl)-isoxazole-3-carboxylic acid (69.3 mg, 0.34 mmol) (prepared according to a procedure similar to that described in synthesis procedure 3, steps 1-4-b, using 1-(4-hydroxyphenyl)ethanone (Aldrich, St. Louis, Mo.) as starting material) in DMF (2 mL) at room temperature. After 2 minutes 2-Amino-1-[4-(5-fluoro-2-trifluoromethyl-benzoyl)-piperazin-1-yl]-ethanone hydrochloride salt (prepared according to a procedure similar to that described in synthesis procedure 1, using 5-Fluoro-2-trifluoromethyl-benzoic acid (Aldrich, St. Louis, Mo.) as a starting material) (125 mg, 0.34 mmol) was added and the resulting mixture was stirred at room temperature overnight. Cold water was then added and extracted with ethyl acetate. The organic layer was washed with brine and dried over Na2SO4, concentrated under reduced pressure to afford the residue. The residue obtained was purified by stirring in ethyl acetate at room temperature for 10 minutes and then filtered to afford 101 mg (57.3%) of 5-(4-Hydroxy-phenyl)-isoxazole-3-carboxylic acid {2-[4-(5-fluoro-2-trifluoromethyl-benzoyl)-piperazin-1-yl]-2-oxo-ethyl}-amide. LCMS Purity: 93.08%. 1H NMR (DMSO-d6): delta 10.2 (s, 1H), 8.6 (t, 1H), 7.9 (m, 1H), 7.76 (d, 2H), 7.5 (m, 2H), 7.16 (s, 1H), 6.9 (d, 2H), 4.1 (m, 2H), 3.4 (m, 6H), 3.0 (m, 2H).

33282-15-4, As the paragraph descriping shows that 33282-15-4 is playing an increasingly important role.

Reference£º
Patent; Bischoff, Alexander; Subramanya, Hosahalli; Sundaresan, Kumar; Sammeta, Srinivasa Raju; Vaka, Anil Kumar; US2010/160323; (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, Gemaess der allgemeinen Arbeitsvorschrift F werden 50 mg (0.14 mmol) [7- (3-AMINO-] [PHENYL)-N [ (3R)-1-AZABICYCLO] [2.2. 2] [OCT-3-YL]-1-BENZOFURAN-2-CARBOXAMID] (Beispiel 114) und [36.] 4 mg (0.28 mmol) [5-ISOXAZOLCARBONSaeURECHLORID] miteinander umgesetzt. Es werden 39.6 mg (53.3 % d. Th. ) der Titelverbindung erhalten. HPLC (Methode [1)] : Rt=4. 18 min. MS (ESIpos) : m/z = 457 (M+H) + (freie Base).

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

Reference£º
Patent; BAYER HEALTHCARE AG; WO2003/104227; (2003); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem