Tag: M.W:200-300

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.

To a solution of 1.5 g of 5-methyl-3-phenyl-4-isoxazolecarboxylic acid in 50 ml of anhydrous tetrahydrofuran stirred at -78C under N2 atmosphere, 5.9 ml of a 2.5M solution of n-butyl lithium in n-hexane was added and the solution was stirred at -78C for 2 hours. Afterwards, 0.89 ml of benzyl bromide was added at -78C and the solution stirred at room temperature for 2 hours. After overnight resting, the solution was poured into water (300 ml), acidified with 1N hydrochloric acid and extracted with ethyl acetate (2 ? 200 ml). The combined organic layers were washed with water, dried (sodium sulphate) and the solvents were evaporated to dryness. The solid residue was washed with petroleum ether to give 1.82 g (84%) of the title compound as an amorphous solid.1H-NMR (200MHz, CDCl3, delta): 9.20-11.80, br, 1H, COOH; 7.10-7.90, m, 10H, phenyl CHs; 3.45, t, 2H, CH2CH2Ph; 3.10, t, 2H, CH2CH2Ph., 1136-45-4

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

Reference£º
Patent; Leonardi, Amedeo; EP1226131; (2003); B1;,
Isoxazole – Wikipedia
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.53983-15-6,Ethyl 5-amino-4-phenylisoxazole-3-carboxylate,as a common compound, the synthetic route is as follows.,53983-15-6

5-amino-obtained Example 2 The 4-phenyl-isoxazole-3-carboxylic acid ethyl ester A1 (0.464g, 2mol), benzaldehyde(0.212g, 2mol) and 10mL absolute ethanol, was added one drop of concentrated sulfuric acid as a catalyst, was heated to reflux, TLC monitoring of the reaction,After completion of the reaction, cooled to room temperature, suction filtered, washed with water and purified by column chromatography to give a white powdery solid 0.45g. Yield 71.77%.

As the paragraph descriping shows that 53983-15-6 is playing an increasingly important role.

Reference£º
Patent; Shenyang Pharmaceutical University; Xu, Wei; Chen, Yu; Zhang, Rui; (15 pag.)CN105777661; (2016); A;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.7063-99-2,Ethyl 5-phenylisoxazole-3-carboxylate,as a common compound, the synthetic route is as follows.,7063-99-2

Synthesis of 5-phenyl-isoxazole-3-carboxylic acid (57) A solution of phenyl-substituted isoxazole ethyl ester (53) (1.89 g, 8.70 mmol) in ethanol (30 mL) was stirred at room temperature. To this solution was added a 2M NaOH solution (6.5 mL, 13.1 mmol). After 5 min. TLC showed that the reaction was complete. To the reaction mixture was added 0.5M HCl to adjust the pH to 3-4, before extracting with ethyl acetate (2¡Á75 mL). The organic extracts were combined, washed with brine, dried over sodium sulfate, and concentrated to afford 5-phenyl-isoxazole-3-carboxylic acid (57) was obtained as a white solid (1.54 g, 94%). 57: 1H NMR (500 MHz, CDCl3): delta 9.4 (broad, 1H), 7.83 (d, 2H), 7.51 (m, 3H), 6.99 (s, 1H)

The synthetic route of 7063-99-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Mioskowski, Charles; Marin, Sandra De Lamo; Maruani, Martine; Gill, Manjinder; US2006/199853; (2006); A1;,
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206055-91-6, (3-(4-Bromophenyl)isoxazol-5-yl)methanol is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred solution of (3-(4-bromophenyl)isoxazol-5-yl)methanol (AA; 0.5 g, 1.96 mmol) in CH2CI2 (15 mL) under inert atmosphere were added pyridine (0.39 mL, 4.91 mmol) and p- dimethylaminopyridine (0.024 mg, 0.19 mmol) at 0 C. After the addition of 4-nitrophenyl carbonochloridate (DK; 0.39 g, 1.93 mmol) at 0 C, the reaction mixture was warmed to RT and stirred for 12 h. The reaction was monitored by TLC. After complete consumption of the starting material, the reaction mixture was diluted with a saturated ammonium chloride solution (20 mL) and the compound was extracted with CH2CI2 (3×20 mL). The combined organic extracts were washed with water (20 mL), dried over sodium sulfate, filtered and concentrated under reduced pressure to obtain the crude. The crude was triturated with pentane (2×15 mL) to afford crude DL (710 mg) as an off-white solid. FontWeight=”Bold” FontSize=”10″ H NMR (500 MHz, CDCI3): delta 8.30 (d, / = 9.5 Hz, 2H), 8.17 (d, J = 6.8 Hz, 1H), 7.70-7.59 (m, 5H), 7.40 (d, J = 9.5 Hz, 2H), 6.91 (d, / = 9.0 Hz, 1H), 6.73 (s, 1H), 5.43 (s, 2H), 5.34 (s, 1H).

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
Patent; VIAMET PHARMACEUTICALS, INC.; HOEKSTRA, William, J.; YATES, Christopher, M.; RAFFERTY, Stephen, W.; WO2014/117090; (2014); A1;,
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7063-99-2, Ethyl 5-phenylisoxazole-3-carboxylate is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

7063-99-2, A solution of phenyl-substituted isoxazole ethyl ester (53) (1.89 g, 8.70 mmol) in ethanol (30 mL) was stirred at room temperature. To this solution was added a 2 M NaOH solution (6.5 mL, 13.1 mmol). After 5 min, TLC showed that the reaction was complete. To the reaction mixture was added 0.5 M HCl to adjust the pH to 34, before extracting with ethyl acetate (2¡Á75 mL). The organic extracts were combined, washed with brine, dried over sodium sulfate, and concentrated to afford 5-phenyl-isoxazole-3-carboxylic acid (57) obtained as a white solid (1.54 g, 94%). 57: 1H NMR (500 MHz, CDCl3): delta 9.4 (broad, 1H), 7.83 (d, 2H), 7.51 (m, 3H), 6.99 (s, 1H)

7063-99-2 Ethyl 5-phenylisoxazole-3-carboxylate 571142, aIsoxazoles compound, is more and more widely used in various fields.

Reference£º
Patent; Chapal, Nicolas; McNicol, Patricia; Jette, Lucie; US2006/223884; (2006); A1;,
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7063-99-2, Ethyl 5-phenylisoxazole-3-carboxylate is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

7063-99-2, General procedure: To a stirred mixture of NaBH4 (3 equiv), 1a-e or 13a-u (1 equiv) in reflux anhydrous THF (20 ml) was added MeOH (1ml). After refluxing for futher 30 min, the reaction mixture was pouring into ice water (10 ml), and extracted with ethyl acetate (3 ¡Á 15 mL), the organic fractions were combined, washed with saturated brine (2 ¡Á 15 ml) prior to drying over anhydrous Na2SO4. After filtration and concentrate using a rotary evaporator,the residual white solid in thenext step without further purification. To a solution of the obtained solid (1 equiv) indichloromethane (20 ml) was slowly added thionyl chloride (6 equiv) and a catalytic amount of DMF at room temperature. After stirring at 40 C for 4 h, the reaction was concentrated under reduced pressure. The residue was purified by silica gel column chromatography using a mixture of petroleum ether/ethyl acetate (20:1, v/v) aseluent to afford the desired product.

The synthetic route of 7063-99-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Li, Zheng; Qiu, Qianqian; Xu, Xue; Wang, Xuekun; Jiao, Lei; Su, Xin; Pan, Miaobo; Huang, Wenlong; Qian, Hai; European Journal of Medicinal Chemistry; vol. 113; (2016); p. 246 – 257;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.91182-60-4,5-(4-Bromophenyl)-3-methylisoxazole-4-carboxylic acid,as a common compound, the synthetic route is as follows.

91182-60-4, 5-(4-Bromo-phenyl)-3-methyl-isoxazole-4-carboxylic acid (2.Og, 7.09mmol) and triethylamine (0.99mL, 7.09mmol) were dissolved in toluene (5OmL). Diphenylphosphoryl azide (1.5mL, 7.09mmol) was added, followed by (R)-(+)-l- phenylethyl alcohol (0.865g, 7.09mmol; commercially available or prepared using procedures desribed herein or in the literature: e.g. E.J. Corey et al. J. Am. Chem. 1987, 109, 5551-5553), and the reaction was stirred at 8O0C for 4 hours. The mixture was concentrated, and the residue was purified by silica gel chromatography to give the title compound.

As the paragraph descriping shows that 91182-60-4 is playing an increasingly important role.

Reference£º
Patent; AMIRA PHARMACEUTICALS, INC.; HUTCHINSON, John Howard; SEIDERS, Thomas Jon; WANG, Bowei; ARRUDA, Jeannie M.; ROPPE, Jeffrey Roger; PARR, Timothy; WO2010/141761; (2010); A2;,
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91182-60-4, 5-(4-Bromophenyl)-3-methylisoxazole-4-carboxylic acid is a Isoxazoles compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,91182-60-4

Step 2: [5-(4-Bromo-phenyl)-3-methyl-isoxazol-4-yl]-carbamic acid (R)-l-phenyl-ethyl ester[00483] 5-(4-Bromo-phenyl)-3-methyl-isoxazole-4-carboxylic acid (25g, 88.7mmol) in toluene (500mL) was added triethylamine (18.5mL, 133mmol), followed by diphenylphosphoryl azide (22.1mL, 101.9mmol). (R)-(+)- 1 -Phenylethyl alcohol (11.9mL, 97.5mmol) was added, and the reaction was stirred at 75C for 2 hours. The mixture was partitioned between EtOAc and H 0 and filtered through Celite. The aqueous layer was extracted with EtOAc, and the combined organic layers were dried over MgS04, filtered, and concentrated to give the title compound.

The synthetic route of 91182-60-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; AMIDRA PHARMACEUTICALS, INC.; BRITTAIN, Jason, Edward; SEIDERS, Thomas, Jon; KING, Christopher, David; WO2011/159550; (2011); A2;,
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7063-99-2,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.7063-99-2,Ethyl 5-phenylisoxazole-3-carboxylate,as a common compound, the synthetic route is as follows.

To a stirred solution of ethyl 5-phenylisoxazole-3- carboxylate (28.0 g, 129mmol) in THF (200mL) was added lithium hydroxide (21.16g, 516mmol) in water (200mL). The reaction was stirred for 2h. The organic solvent was distilled off, water was added (500 mL), and acidified with aq. 5N HC1 (50mL). The solid precipitate was collected by filtration and dried under vacuum to give 5-phenylisoxazole-3- carboxylic acid (24.0 g, 190 [M+H]); ‘H NMR: (400 MHz, DMSO) delta: 7.438(S, 1H), 7.524- 7.593(m,3H), 7.945-7.969(m, 2H), 14.1 15(S, 1H).

As the paragraph descriping shows that 7063-99-2 is playing an increasingly important role.

Reference£º
Patent; FLATLEY DISCOVERY LAB; COLE, Bridget, M.; KOLODZIEJ, Andrew; (71 pag.)WO2016/54560; (2016); A1;,
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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.

3-(4-bromophenyl)isoxazol-5-yl)methanol (5.0 g, 19.7 mmol) synthesized in Step 1 of Preparation Example 7, and 60% sodium hydride (1 g) were added to N,N-dimethylformamide (50 mL) and the mixture was stirred for 15 min. After methyl iodide was added thereto and completion of the reaction was confirmed by TLC, extraction was carried out with water (20 mL) and ethyl acetate (100 mL). The organic layer was washed with water (50 mL¡Á2) and brine (20 mL). The organic layer was separated, dried over anhydrous magnesium sulfate, and filtered under reduced pressure to remove ethyl acetate. The residue was purified by silica gel column chromatography using ethyl acetate and hexane as a developing solvent, thus affording the title compound 3-(4-bromophenyl)-5-(methoxymethyl)isoxazole (11f). Yield: 95%.1H NMR (CDCl3, 400 MHz): 7.67 (d, 2H, J=7.2 Hz), 7.58 (d, 2H, J=7.6 Hz), 6.53 (s, 1H), 4.57 (s, 2H), and 3.45 (s, 3H).

206055-91-6, As the paragraph descriping shows that 206055-91-6 is playing an increasingly important role.

Reference£º
Patent; Moon, Ho-Sang; Yoo, Moo-Hi; Kim, Soon-Hoe; Lim, Joong-In; Son, Moon-Ho; Kim, Mi-Kyung; Shin, Chang-Yell; Kim, Jin-Kwan; Park, Sang-Kuk; Chae, Yu-Na; Shim, Hyun-Joo; Jeon, Sun-Ho; Kim, Hae-Sun; Wie, Gil-Tae; Kim, Dong-Hwan; Lee, Byung-Kyu; Park, Chan-Sun; Ahn, Byung-Nak; Kim, Eunkyung; Bae, Myung-Ho; Shin, Young-Ah; Hur, Youn; Lee, Chun-Ho; Choi, Hyun-Ho; Kim, Bongtae; Chong, Wonee; US2010/63041; (2010); A1;,
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