Month: September 2020

13673-62-6, 2-(Methylthio)benzo[d]oxazole is a benzoxazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 6 N-(2-benzoxazolyl)-O-[4-oxo-4-[(1,4,5,6-tetrahydro-2-pyrimidinyl)amino]butyl]-L-tyrosine (1,1-dimethyl ethyl) N-(2-benzoxazolyl)-O-(4-ethoxy-4-oxobutyl)-L-tyrosinate (6-1) A mixture constituted by aminoester 5-3 (1.05 g, 3 mmole), 2-methylthiobenzoxazole (660 mg, 4 mmoles) and HgCl2 (50 mg) is heated at 140 C. for 4 hours. The mixture obtained after cooling down is purified by chromatography eluding with a heptane/AcOEt mixture 50/50. 370 mg of the expected product 6-1 is obtained. IR (CHCl3) NH 3413 cm-1; C=O 1729 cm-1; Heterocycle+Aromatic 1642, 1612, 1582, 1512 cm-1, 13673-62-6

13673-62-6 2-(Methylthio)benzo[d]oxazole 4178773, abenzoxazole compound, is more and more widely used in various fields.

Reference£º
Patent; Demassey, Jacques; Gourvest, Jean-Francois; Ruxer, Jean-Marie; Weston, John Bernard; LeFrancois, Jean-Michel; US2004/225111; (2004); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

The benzoxazole compound, name is 2-Benzoxazolinone,cas is 59-49-4, mainly used in chemical industry, its synthesis route is as follows.,59-49-4

Step 1: To a solution of benzoxazolinone (20 g, 0.148 mol) in 220 mL glacial acetic acid was added N-bromosuccinimide (NBS, 26.36 g, 0.148 mol), and the reaction mixture was stirred at room temperature for 63 hours before pouring into 1500 mL water. The precipitated product was washed thoroughly with water upon collection and recrystallized from EtOH to give 6-bromo-3H-benzoxazol-2-one (9) (25.09 g, 79%): Theory: C, 39.28; H, 1.88; N, 6.54; Br, 37.33. Found: C, 39.36; H, 2.02; N, 6.36; Br, 37.43. MP 192-194 C.

As the rapid development of chemical substances, we look forward to future research findings about 59-49-4

Reference£º
Patent; Kornberg, Brian Edward; Lewthwaite, Russell Andrew; Manning, David; Nikam, Sham Shridhar; Scott, Ian Leslie; US2003/18021; (2003); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.59-49-4,2-Benzoxazolinone,as a common compound, the synthetic route is as follows.

Intermediate 6: Synthesis of 3-methyl-2-oxo-2,3-dihydrobenzo[d]oxazole-6-sulfonyl chloride; 1. Synthesis of 3-methylbenzo[d]oxazol-2 (3H)-one; Sodium hydride (7.00 mmol) was added to a chilled (0 C.) solution of benzo[d]oxazol-2(3H)-one (4.81 mmol) in tetrahydrofuran (20 mL) and the reaction mixture was maintained for 30 min. Methyl iodide (7.25 mmol) was added dropwise and the reaction mixture was maintained for 6 h at rt. The reaction mixture was diluted with ethanol (10 mL) and the mixture was concentrated. The residue was diluted with water (50 mL) and was extracted with dichloromethane (3¡Á20 mL). The combined organic layers were dried (sodium sulfate), filtered and concentrated to afford 3-methylbenzo[d]oxazol-2 (3H)-one in 82% yield as a light red solid., 59-49-4

As the paragraph descriping shows that 59-49-4 is playing an increasingly important role.

Reference£º
Patent; Memory Pharmaceuticals Corporation; US2010/16297; (2010); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

81900-93-8, 4-Aminobenzo[d]oxazol-2(3H)-one is a benzoxazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

81900-93-8, Example 56: 2-(4-(trifluoromethyl)phenyl)-N-(2,3-dihydro-2-oxobenzo[d]oxazol-4-yl)acetamide (scheme 10) Preparation of 2-(4-(trifluoromethyl)phenyl)-N-(2,3-dihydro-2-oxobenzo[d]oxazol-4-yl)acetamide 4-trifluoromethylphenylacetic acid (453 mg, 2.2 mmol) was dissolved in 20 ml of THF and at 0C DEPC (0.43 ml, 1.3equiv) and amine 1b (400 mg, 2.66 mmol) were added to the solution. The mixture was warmed at 80C overnight, then evaporated and the crude was dissolved in AcOEt (30 ml) and washed with water (1 X 20 ml) and brine. The organic phase was dried over sodium sulfate and concentrated under vacuum. The purification of the crude residue by chromatographic column using AcOEt as eluant gave 360 mg of a white solid. Yield = 48% 1HNMR (DMSO, 200 MHz) delta 3.80 (2H, s), 7.10 (3H, m), 7.58 (2H, d, J = 8.4 Hz), 7.70 (2H, d, J = 8.2 Hz), 10.06 (1H, bs), 11.14(1H, bs); [M+1] 336.9 (C16H11F3N2O3 requires 336.3).

As the paragraph descriping shows that 81900-93-8 is playing an increasingly important role.

Reference£º
Patent; Pharmeste S.r.l.; EP2377850; (2011); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.177492-52-3,Benzo[d]oxazol-6-amine,as a common compound, the synthetic route is as follows.

177492-52-3, General procedure: A mixture of the appropriate amine (1M-3M, 2 mmol) and the appropriate aldehyde (2.2 mmol) in ethanol (10 mL) was stirred at room temperature for 8 h.

177492-52-3 Benzo[d]oxazol-6-amine 584120, abenzoxazole compound, is more and more widely used in various fields.

Reference£º
Article; Zhang, Da-Jun; Sun, Wen-Fang; Zhong, Zhao-Jin; Gao, Rong-Mei; Yi, Hong; Li, Yu-Huan; Peng, Zong-Gen; Li, Zhuo-Rong; Molecules; vol. 19; 1; (2014); p. 925 – 939;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

The benzoxazole compound, cas is 2382-96-9 name is Benzo[d]oxazole-2-thiol, mainly used in chemical industry, its synthesis route is as follows.,2382-96-9

Step 2) Synthesis of 2-chlorobenzo [d] oxazole A mixture of benzo [d] oxazole-2-thiol (2.268 g, 15.0 mmol) , sulfoxide chloride (20 mL, 272.6 mmol) and N, N-dimethylformamide (0.05 mL, 0.65 mmol) was heated to reflux for 3 hours, and then cooled and the solvent was removed in vacuo. The resulting product was used directly in the next step.

As the rapid development of chemical substances, we look forward to future research findings about 2382-96-9

Reference£º
Patent; SUNSHINE LAKE PHARMA CO., LTD.; ZHANG, Yingjun; JIN, Chuanfei; ZHANG, Ji; (90 pag.)WO2017/88759; (2017); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

19932-85-5, 6-Bromobenzo[d]oxazol-2(3H)-one is a benzoxazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: One equivalent of appropriate heterocyclic derivative was dissolved in DMF. Three equivalents of potassium carbonate and 1.2 equivalent of the appropriate 3-chloropropan-1-amine derivative were added. The resulting mixture was heated at 70C until disappearance of the starting material. The reaction was monitored by TLC. After 24-96 h, the solvent was removed under reduced pressure, and water added to the residue. The crude product was extracted with dichloromethane. The combined organic fractions were washed with water and dried over magnesium sulphate. Purification by thick layer chromatography or column chromatography was performed.

19932-85-5, The synthetic route of 19932-85-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Donnier-Marechal, Marion; Carato, Pascal; Le Broc, Delphine; Furman, Christophe; Melnyk, Patricia; European Journal of Medicinal Chemistry; vol. 92; (2015); p. 575 – 582;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

2382-96-9, Benzo[d]oxazole-2-thiol is a benzoxazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A mixture of thiol (1 mmol), hydrogen peroxide (0.5 mL) and the catalyst (0.005 g) in ethanol (2 mL) was stirred at ambient temperature. Reaction progress was monitored by TLC (acetone: n-hexane, 2:8). After completion of the reaction, catalyst was separated by an external magnet and washed with ethyl acetate; next, the product was extracted with ethyl acetate (5 mL 9 4). The organic layer was dried over anhydrous Na2SO4 (1.5 g). Finally, the organic solvents were evaporated, and the corresponding disulfides were obtained in high to excellent yields (88-98%)., 2382-96-9

As the paragraph descriping shows that 2382-96-9 is playing an increasingly important role.

Reference£º
Article; Shiri, Lotfi; Ghorbani-Choghamarani, Arash; Kazemi, Mosstafa; Research on Chemical Intermediates; vol. 43; 5; (2017); p. 2707 – 2724;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

4570-41-6, Benzo[d]oxazol-2-amine is a benzoxazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A solution of 1.34 g (0.01 mol) of benzoxazol-2-amine was added to a 100 ml three-necked flask and dissolved in 30 ml of tetrahydrofuran,5 ml of triethylamine.The acid chloride was then dissolved in 20 ml of dry tetrahydrofuran,Below 5 under the conditions of slow drop,Stir for 4 h at room temperature.40 ml of saturated aqueous sodium chloride solution was added,The aqueous phase was extracted three times with 40 ml of dichloromethane,Combine the organic phase.Column separation,Dichloromethane: methanol 30: 1 to give 1.88 g of a white solid,M.p. 237 ~ 238 ¡ã C,Yield: 72.3percent.

4570-41-6, As the paragraph descriping shows that 4570-41-6 is playing an increasingly important role.

Reference£º
Patent; Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences; Si, Shuyi; Gao, Nana; Jiang, Wei; Jiang, Jiandong; Li, Yan; Li, Dongsheng; Li, Yongzhen; Zhang, Jing; Zhu, Ningyu; Wang, Zhimin; (20 pag.)CN103772376; (2017); B;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

2-Benzoxazolinone, cas is 59-49-4, it is a common heterocyclic compound, the benzoxazole compound, its synthesis route is as follows.,59-49-4

Sodium hydride (7.00 mmol) was added to a chilled (0 C) solution of benzo[d]oxazol-2(3H)-one (4.81 mmol) in tetrahydrofuran (20 mL) and the reaction mixture was maintained for 30 min. Methyl iodide (7.25 mmol) was added dropwise and the reaction mixture was maintained for 6 h at rt. The reaction mixture was diluted with with ethanol (10 mL) and the mixture was concentrated. The residue was diluted with water (50 mL) and was extracted with dichloromethane (3 x 20 mL). The combined organic layers were dried (sodium sulfate), filtered and concentrated to afford 3-methylbenzo[d]oxazol-2 (3H)-one in 82% yield as a light red solid.

With the rapid development of chemical substances, we look forward to future research findings about 59-49-4

Reference£º
Patent; MEMORY PHARMACEUTICALS CORPORATION; WO2009/23844; (2009); A2;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem