Category: 1072-67-9

1072-67-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1072-67-9, Name is 5-Methylisoxazol-3-amine, molecular formula is C4H6N2O. In a Article, authors is Ryabukhin, Sergey V.£¬once mentioned of 1072-67-9

Approach to the library of 3-hydroxy-1,5-dihydro-2H-pyrrol-2-ones through a three-component condensation

A convenient procedure for the parallel synthesis of 3-hydroxy-1,5-dihydro- 2H-pyrrol-2-ones through a three-component condensation of active methylene compounds, aldehydes, and amines was developed. It was shown that the use of acetic acid as the reaction medium was suitable for the considerably reactive substrates with no additional functionalities. The substrates with low reactivity and those possessing carboxylic groups or additional basic centers required the use of DMF as the solvent and chlorotrimethylsilane as the reaction promoter was necessary. More than 3000 pyrrolones were synthesized by the developed procedure. To demonstrate the scope of the described approach 114 library representatives were fully characterized.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 1072-67-9

Reference£º
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

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

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

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.1072-67-9,5-Methylisoxazol-3-amine,as a common compound, the synthetic route is as follows.

General procedure: To a suspension of 4-hydroxyquinolin-2(1H)-one (7, 1 mmol, 161 mg) in H2O:EtOH(1:1) (8 mL), DBU (20 mol%) was added. The reaction mixture was heated and stirred at 50 C for 15 min to dissolve the reactant. Then, aryl glyoxal monohydrates(1a-h, 1 mmol), 5-methylisoxazol-3-amine (6, 1 mmol, 98 mg) were added to the reaction mixture, which was stirred at the above-mentioned temperature for appropriate times as shown in Table 2. The progress of reaction was controlled by TLC using MeOH:CHCl3/1:10 as eluent. After completion of the reaction, the precipitate was filtered, washed with water and dried to give the desired products 8a-h in high yield (82-89%)., 1072-67-9

As the paragraph descriping shows that 1072-67-9 is playing an increasingly important role.

Reference£º
Article; Aslanpanjeh, Maryam; Poursattar Marjani, Ahmad; Khalafy, Jabbar; Etivand, Nasser; Research on Chemical Intermediates; vol. 46; 1; (2020); p. 165 – 177;,
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

2-Chlorosulfonyl-3-methoxy-thiophene (3.8 g, 17.87 MMOL), the product from step A of Preparative Example 13.29, was dissolved in 100 mL of CH2CI2 and 20 mL of pyridine. 3-Amino-5-methyl-isoxazole (3.5 g, 35. 68 MMOL) was added. The mixture was stirred for 20 h at room temperature, diluted with 100 mL of CH2CI2, and washed with a 0.5 N HCI aqueous solution (50 mL x 2), H20 (50 mL), and brine (50 mL). The organic solution was dried with NA2SO4, and conentrated in vacuo to a brown oil. This oil was dissolved in 100 mL of CH2CI2, washed again with a 0.5 M HCI aqueous solution (30 mL x 3) and brine. After dried over NA2SO4, the organic solution was concentrated in vacuo to a yellow solid, 4.48 g (91 %, MH+= 275.0) of the desired product., 1072-67-9

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

Reference£º
Patent; PHARMACOPEIA, INC.; WO2004/33440; (2004); A1;,
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: Sodium nitrite (0.14 g, 2.0 mmol) was added portion-wise to 3.0 mL of sulfuric acid at 15 C and heated to 60 C with stirring for 20 min. The solution was cooled to below 5 C and a mixture of acetic and propionic acids (5:1, 3 mL) were added at below 25 C. The finely heterocyclic amine derivatives (2.0 mmol) were slowly added, within 25 min below 5 C, and the whole mixture was stirred at 0-5 C for 2 h. After completion of diazotization procedure, the diazonium salt solution was added drop-wise to the solution of 6-amino-1,3-dimethyluracil (2.0 mmol, 0.31 g) in sodium hydroxide (4.0 mmol, 0.16 g) and water (5.0 mL). The resulting solution was vigorously stirred at 0-5 C for 1 h and the progress of the reaction was followed by TLC, using an ethyl acetate-petroleum ether mixture (4:1 v/v) as developing solvent. After neutralizing the residual HCl and filtration, the product was crystallized from DMF. The physical and spectral data of the purified dyes are as follows.

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; Yousefi, Hessamoddin; Yahyazadeh, Asieh; Yazdanbakhsh, Mohammad Reza; Rassa, Mehdi; Moradi-E-Rufchahi, Enayat O’Llah; Journal of Molecular Structure; vol. 1015; (2012); p. 27 – 32;,
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: To a suspension of 4-hydroxyquinolin-2(1H)-one (7, 1 mmol, 161 mg) in H2O:EtOH(1:1) (8 mL), DBU (20 mol%) was added. The reaction mixture was heated and stirred at 50 C for 15 min to dissolve the reactant. Then, aryl glyoxal monohydrates(1a-h, 1 mmol), 5-methylisoxazol-3-amine (6, 1 mmol, 98 mg) were added to the reaction mixture, which was stirred at the above-mentioned temperature for appropriate times as shown in Table 2. The progress of reaction was controlled by TLC using MeOH:CHCl3/1:10 as eluent. After completion of the reaction, the precipitate was filtered, washed with water and dried to give the desired products 8a-h in high yield (82-89%)., 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; Aslanpanjeh, Maryam; Poursattar Marjani, Ahmad; Khalafy, Jabbar; Etivand, Nasser; Research on Chemical Intermediates; vol. 46; 1; (2020); p. 165 – 177;,
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.

EXAMPLE 1 SPC10 3-(Chloroacetamido)-5-Methylisoxazole To 800 ml of chloroform is added 118 grams (1.12 moles) of 3-amino-5-methylisoxazole followed by 118 grams (1.5 moles) of pyridine. To this solution is added 147 grams (1.3 moles) of chloroacetylchloride with the addition temperature maintained at 0-10C. The reaction is then stirred at room temperature for 1 hour, filtered and dried in a vacuum desiccator to give 116 grams (56%) of 3-(chloroacetamido)-5-methylisoxazole, mp 192-195C. This material is slightly irritating to the skin and due caution should be exercised. Anaylsis: Calc’d for C6 H7 ClN2 O2 (174.58): C, 41.28; H, 4.04; N, 16.05; Cl, 20.31. Found: C, 41.55; H, 4.10; N, 15.79; Cl, 20.50., 1072-67-9

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

Reference£º
Patent; Warner-Lambert Company; US3957772; (1976); A;,
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: A mixture of 45 N-isoxazolyl enaminone 1 (1.0mmol, 0.800g), aryl glyoxal monohydrates 2 (1.0mmol, 0.552g) and 4-amino-3-methyl-5-styrylisoxazoles 320h,23 (1.0mmol, 0.727g) in 4.5mL 46 water and 18 AcOH 0.5mL was refluxed at 100C for 1h. After completion of the reaction (monitored by TLC), the mixture was cooled to room temperature and poured into ice-cold water. The precipitate that formed was filtered off, washed with ice cold water and the crude product was purified by recrystallization from methanol to give pure bis-isoxazolyl amino dihydro-1H-indol-4(5H)-ones 42 4., 1072-67-9

As the paragraph descriping shows that 1072-67-9 is playing an increasingly important role.

Reference£º
Article; Nagi Reddy, Modugu; Praveen Kumar, Pittala; Tetrahedron Letters; vol. 58; 51; (2017); p. 4790 – 4795;,
Isoxazole – Wikipedia
Isoxazole | C3H3NO – PubChem