Category: Isoxazoles

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.88-14-2,Furan-2-carboxylic acid,as a common compound, the synthetic route is as follows.

Compounds 41-70 were part of a parallel set prepared in library plate format according to General Procedure L, outlined below. ; L. General Procedure for Plate Preparation-Amide Formation XXI: Resin bound deprotected biarylphenol XVII (prepared from intermediate XII, boronates XIVd and XIVe, following general procedures D-F) was distributed into a 96 well plate, 10 mg of resin (0.013 mmol) per well. To the resin 400 mul of dichloromethane was added, followed by 100 mul of DIEA, followed by 0.13 mmol (10 equiv) of heterocyclic carboxylic acid XXa-XXn was added followed by 61 mg (0.13 mmol, 10 equiv) of PyBrop. The plate was shaken at room temperature for 24 hours, then drained and washed with dichloromethane, methanol/dichloromethane, dimethylformamide, methanol/dichloromethane and dichloromethane. The compounds were cleaved with TFA/dichloromethane (600 mul, 1:1) into a 96 deep well plate and submitted for testing without further purification. (Mass spec results obtained are shown in Table 4). Carboxylic Acids Het-COOH XX:

The synthetic route of 88-14-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Adolor Corporation; US2006/74086; (2006); 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.141112-29-0,(5-Cyclopropylisoxazol-4-yl)(2-(methylsulfonyl)-4-(trifluoromethyl)phenyl)methanone,as a common compound, the synthetic route is as follows.

COMPOUND 621: 2-cyano-3-cyclopropyl-1-[2-(methylsulphonyl)-4-trifluoromethylphenyl]propan-1,3-dione, m.p. 107.5 C., starting from 5-cyclopropyl-4-[2-(methylsulphonyl)-4-trifluoromethylbenzoyl]isoxazole.

As the paragraph descriping shows that 141112-29-0 is playing an increasingly important role.

Reference£º
Patent; Rhone-Poulenc Agriculture Limited; US5804532; (1998); A;,
Isoxazole – Wikipedia
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

5-Methylisoxazole-4-carboxylic acid (1 g, 7.86 mmol) was added to SOCl 2 (3 mL) and stirred at 50 C. After completion of the reaction, the reaction mixture was cooled and then distilled under reduced pressure to remove volatile materials to obtain crude yellow oil (96%)

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

Reference£º
Patent; Erica Hanyang University Academic Cooperation; Ha, Jung Mi; Jung, Gyung Jin; (27 pag.)KR2016/34632; (2016); A;,
Isoxazole – Wikipedia
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 5: To generate the acid chloride a suspension of 5-methyl-1 ,2-oxazole-4-carboxylic acid (39 mg, 0.30 mmol) in CH2CI2 (0.5 mL) at 0 C was added oxalyl chloride (50 muIota_, 1.2 mmol) and DMF (1 drop). The suspension was allowed to stir for a further 15 min at 0 C followed by 2 h at room temperature. The resulting mixture was concentrated in vacuo to give a dark oil. The oil was twice suspended in n-hexanes (2 x 1 mL) and concentrated in vacuo. A solution of 7-acetyl-10a-(4-chlorophenyl)-2,3, 10, 10a-tetrahydro-1 H,5H-imidazo[1 ,2- a]pyrrolo[1 ,2-c ]pyrazin-5-one (20 mg, 61 muetaetaomicronIota) in pyridine (0.5 mL) was added to a suspension of the acid chloride (generated as above; 0.30 mmol) in pyridine (0.5 mL) and CH2CI2 (0.5 mL) at 0 C . The resultant mixture was warmed to room temperature and stirred for 16 h. The reaction mixture was diluted with a saturated aqueous solution of NaHC03 (25 mL) and extracted with CH2CI2 containing 20% of propan-2-ol (3 x 25 mL). The organic layers were combined, dried and concentrated in vacuo to yield a crude brown residue that was partially purified using flash chromatography (Biotage SP4, 12 g cartridge, 0-10%MeOH gradient in CH2CI2) to give a mixture (10 mg) containing the desired product which was further purified by flash chromatography (2 x Biotage SP4, 12 g cartridge, C18 phase, 20-40% acetonitrile gradient in water) to give 7-acetyl-10a-(4-chlorophenyl)-1-[(5-methyl-1 ,2- oxazol-4-yl)carbonyl]-2,3, 10, 10a-tetrahydro-1 H,5H-imidazo[1 ,2-a]pyrrolo[1 ,2-c ]pyrazin-5-one (24) as a solid (3.5 mg, yield 14%).

As the paragraph descriping shows that 42831-50-5 is playing an increasingly important role.

Reference£º
Patent; BIOTA SCIENTIFIC MANAGEMENT PTY LTD; MITCHELL, Jeffrey Peter; PITT, Gary; DRAFFAN, Alistair George; MAYES, Penelope Anne; ANDRAU, Laura; ANDERSON, Kelly; WO2011/94823; (2011); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

1136-45-4, 5-Methyl-3-phenylisoxazole-4-carboxylic acid is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 1 g (10 mmol) but-2-ynoyl chloride (Journal of Organic Chemistry (1981), 46(11), 2273-80), 0.625 g (5 mmol) 5-Methyl-3-phenyl-isoxazole-4-carboxylic acid (commercially available) and 1.3 g (10 mmol) AlCl3 in 10 mL dichloroethane was at room temperature for 18 h. The mixture was poured onto ice/water and the organic layer washed with Na2CO3 sat., NaCl sat. and dried with Na2SO4. After evaporation of all volatiles the residue was purified on silica eluting with a gradient of ethyl acetate and heptane affording 0.2 g (17%) of the title compound as light brown solid. (m/e): 227.1 (M+).

The synthetic route of 1136-45-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Buettelmann, Bernd; Han, Bo; Knust, Henner; Nettekoven, Matthias Heinrich; Thomas, Andrew William; US2007/66668; (2007); 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.1136-45-4,5-Methyl-3-phenylisoxazole-4-carboxylic acid,as a common compound, the synthetic route is as follows.

5-Methyl-3-phenylisooxazole-4-carboxylic acid (40 mg, 0.197 mmol), ethyl isonipecotate (33.8 mg, 0.215 mmol), O-(benzotriazol-1-yl)-N,N,N’,N’-tetramethyluronium tetrafluoroborate (86.2 mg, 0.268 mmol) and diisopropylethylamine (25.4 mg, 0.197 mmol) were mixed in dimethylformamide (1.5 mL) and stirred at room temperature. Solvent was evaporated in vacuo, and the residue was taken up in methanol (1 mL), filtered and purified by preparative chromatography. The combined fractions were partitioned between NaHCO3 (sat) and ethylacetate. The organic layer was washed with water and concentrated in vacuo to afford the title compound. HRMS (ESI, pos. ion) m/z calcd for C19H22N2O4: 342.1580, found 342.1578.

As the paragraph descriping shows that 1136-45-4 is playing an increasingly important role.

Reference£º
Patent; Amgen Inc.; Biovitrum AB; US2008/21022; (2008); 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.1136-45-4,5-Methyl-3-phenylisoxazole-4-carboxylic acid,as a common compound, the synthetic route is as follows.

A mixture of 406 mg (2 mmol) 5-methyl-3-phenyl-isoxazole-4-carboxylic acid (commercially available) and 4 mL SOCl2 was heated to reflux for 3 h. After evaporation of all volatiles the residue was added to a mixture of 206 mg (2 mmol) 1H-pyrrole-2-carboxylic acid methyl ester (commercially available) and 440 mg (3 mmol) AMCl3 in 25 mL dichloroethane and heated to reflux for 3 h. After cooling to room temperature the precipitate was collected and washed with dichloromethane. The residue was purified on silica eluting with a gradient of ethyl acetate and heptane affording 210 mg (37%) of the title compound as white foam. (m/e): 311.0 (MH+; 100%).

1136-45-4 5-Methyl-3-phenylisoxazole-4-carboxylic acid 14343, aIsoxazoles compound, is more and more widely used in various.

Reference£º
Patent; Buettelmann, Bernd; Han, Bo; Knust, Henner; Nettekoven, Matthias Heinrich; Thomas, Andrew William; US2007/66668; (2007); A1;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

3405-77-4, 5-Methylisoxazole-3-carboxylic acid is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

5-methylisoxazole-3-carboxylic acid (1.5 g, 12.04 mmol) was added to a mixture of potassium nitrate (1.83 g, 18.06 mmol) and sulfuric acid (5 ml) at room temperature. After complete dissolution, the mixture was warmed to 50¡ãC and stirred for 4 hours. The mixture was then cooled to 0¡ãC, ice was added, and the solution was neutralized with sodium bicarbonate. The mixture was extracted with ethyl acetate (3 x 30 ml), dried over sodium sulfate, filtered and concentrated to give 1.45 g of 4 as a white solid (8.43 mmol, 70percent). The product could be further recrystallized from dichloromethane.

3405-77-4 5-Methylisoxazole-3-carboxylic acid 76947, aIsoxazoles compound, is more and more widely used in various.

Reference£º
Article; Wei?wer, Michel; Bittker, Joshua A.; Lewis, Timothy A.; Shimada, Kenichi; Yang, Wan Seok; MacPherson, Lawrence; Dandapani, Sivaraman; Palmer, Michelle; Stockwell, Brent R.; Schreiber, Stuart L.; Munoz, Benito; Bioorganic and Medicinal Chemistry Letters; vol. 22; 4; (2012); p. 1822 – 1826;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem

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.

5-Methylisoxazole-3-carboxylic acid (150 mg, 1.18 mmol) dissolved in toluene (2 mL) was treated with DMF (1 drop) and thionyl chloride (1.42 mmol, 103 Iota then heated to reflux for 5 h. The solvent was removed in vacuo to afford crude 5-methylisoxazole-3- carbonyl chloride (155 mg, 1.06 mmol) as a brown oil. The crude acid chloride without purification was dissolved in THF (4 mL), treated with Et3N (155 mu, i.o6 mmol) and stirred for 5 min, before adding 4-(2-aminoethyl)benzenesulfonamide (220 mg, 1.10 mmol) and stirring at room temperature for 15 h under N2 atmosphere. The reaction mixture was concentrated in vacuo and purified by MPLC, affording the titled compound as an amorphous white solid (205 mg, 62%): NMR (600 MHz, DMSO- d6) delta 8.79 (t, J = 5-8 Hz, lH), 7-74 (d, J = 8.3 Hz, 2H), 7.41 (d, J = 8.3 Hz, 2H), 7.30 (s, 2H), 6.50 (q, J= 0.8 Hz, lH), 3.49 (m, 2H), 2.91 (t, J = 7.2 Hz, 2H), 2.45 (d, J= 0.8 Hz, 3H); ^C NMR (151 MHz, DMSO-d6) delta 171.0, 158.8, 158.5, 143-3, 142.0, 129.0, 125. 6, 101.1, 39-8, 34-3, H-7; HRMS (ESI-TOF) m/z calcd for C13H14N304S [M-H]- 308.0711, found 308.0708; LC-MS m/z 308.0 [M+H]+, purity >99% (ELSD).

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

Reference£º
Patent; THE UNIVERSITY OF QUEENSLAND; THE PROVOST, FELLOWS, FOUNDATION SCHOLARS, AND THE OTHER MEMBERS OF BOARD, OF THE COLLEGE OF THE HOLY AND UNDIVIDED TRINITY OF QUEEN ELIZABETH NEAR DUBLIN; O’NEILL, Luke; COLL, Rebecca; COOPER, Matthew; ROBERTSON, Avril; SCHRODER, Kate; MACLEOD, Angus Murray; MILLER, David John; (109 pag.)WO2018/215818; (2018); 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.21169-71-1,Isoxazole-5-carboxylic acid,as a common compound, the synthetic route is as follows.

EXAMPLE 24 (S)-(-)-N-[[3-[4-[1-(Isoxazole-5-carbonyl)-4-piperidinyl]-3-fluorophenyl]-2-oxo-5-oxazolidinyl]methyl]acetamide A solution of isoxazole-5-carboxylic acid (79 mg) and 1,1′-carbonyldiimidazole (80 mg) in dry tetrahydrofuran (2.0 mL) is stirred am ambient temperature for one hour, and a solution of (S)-(-)-N-[[2-oxo-3-[4-(4-piperidinyl)-3-fluorophenyl]-5-oxazolidinyl]methyl]acetamide (EXAMPLE 20, 150 mg) in dry tetrahydrofuran (6.0 mL) is added. The mixture is then stirred at ambient temperature for 19 hours, concentrated under reduced pressure, diluted with methylene chloride (20 mL), washed with saturated aqueous sodium bicarbonate (10 mL), water (10 mL) and saline (10 mL), dried over anhydrous sodium sulfate and concentrated under reduced pressure to give the crude product which is chromagraphed on silica gel (70-230 mesh, 10 g), eluding with methanol/methylene chloride (7.5/92.5). Pooling and concentration of those fractions with an Rf =0.67 by TLC (methanol/chloroform, 10/90) and recrystallization from chloroform/diethyl ether gives the title compound, mp 290-292 C.

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

Reference£º
Patent; Pharmacia & Upjohn Company; US5968962; (1999); A;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem