Day: October 15, 2020

59608-97-8,59608-97-8, 4-(Chloromethyl)thiazol-2-amine hydrochloride is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

O-(2-Amino-1 ,3-thiazol-4-yl)methyl-(3-methylpyridin-2-yl)-(1-methyltetrazol-5-yl)methanone oxime (compound 157)To a solution of 1-methyl-5-[(3-methylpyridin-2-yl)carbohydroximoyl]tetrazole (2.6 g, 11.9 mmol) in dichloromethane are added resin PL-TBD 1.81 mmol/g (13.2 g) and 4-chloromethyl-2-amino-1 ,3- thiazole hydrochloride (2.4 g, 13.1 mmol). The mixture is stirred for two days and filtered. The resin is washed successively with dichloromethane, methanol and dichloromethane. The combined filtrates are concentrated. Silica-gel chromatography of the residue affords 1.3 g of compound 157 [yield 33 percent ; HPLC/MS : m/z = 331 (M+H) ; LogP = 1.04].

59608-97-8 4-(Chloromethyl)thiazol-2-amine hydrochloride 73228, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; BAYER CROPSCIENCE SA; WO2008/6874; (2008); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

51640-36-9, 2-Chlorothiazole-5-carbonitrile is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,51640-36-9

2-({6-[4-(morpholin-4-ylacetyl)piperazin-1-yl]pyrimidin-4-yl}amino)-1,3-thiazole-5-carbonitrile (42-4) 42-3 (0.36 g, 1.18 mmol), sodium hydride (0.094 g, 2.35 mmol) and 2-chloro-1,3-thiazole-5-carbonitrile 2-2 (0.17 g, 1.18 mmol) were treated as in Scheme 4 above. The reaction was cooled, quenched with methanol and water, evaporated to dryness and partitioned between methylene chloride, methanol and water. The organic layers were evaporated to dryness and purified on a C18 preparative hplc column and isolated via lyophilization to afford 42-4. Hi-Res MS: calc: 415.1659 found: 415.1638. 1H-NMR (CD3OD): 8.44(s, 1H); 8.01(s, 1H); 6.20(s, 1H); 4.36(s, 2H); 4.05(br s, 2H); 3.88(br s, 2H); 3.82(m, 2H); 3.76(m, 2H); 3.71(m, 2H); 3.56(m, 4H); 3.25(br s, 2H).

51640-36-9 2-Chlorothiazole-5-carbonitrile 1485222, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; Bilodeau, Mark T.; Hartman, George D.; Hoffman JR., Jacob M.; Sisko, John T.; Manley, Peter J.; Smith, Anthony M.; Tucker, Thomas J.; Lumma JR., William C.; Rodman, Leonard; US2002/137755; (2002); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

80945-86-4,80945-86-4, 6-Bromo-2-chlorobenzothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

[00394]6-Bromo-2-chlorobenzo[d]thiazole (701) (0.5 g, 2.0 mmol) was dissolved in methanamine solution (20 ml) in a sealed tube, and the resulting mixture was stirred at 60 C. overnight. The mixture was allowed to cool to RT, concentrated in vacuo and water (20 mL) was added. The solid was collected by filtration to afford the desired product, 6-bromo-N-methylbenzo[d]thiazol-2-amine (702) (0.43 g, 87.9% yield). ESI-MS (M+H)+m/z: 242.8.

80945-86-4 6-Bromo-2-chlorobenzothiazole 2049871, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; Intellikine LLC; Ren, Pingda; Liu, Yi; Wilson, Troy Edward; Li, Liansheng; Chan, Katrina; US2015/225407; (2015); A1;,
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Thiazole | chemical compound | Britannica

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.687636-93-7,2-Bromothiazole-5-methanol,as a common compound, the synthetic route is as follows.

687636-93-7, To a solution of (2-bromothiazol-5-yl)methanol (900 mg, 4.6 mmol) and triphenylphosphine (1300 mg, 5.1 mmol) in DCM (20 ml) was added a DCM solution of CBr4 (1500 mg, 4.6 mmol) at 0C. The reaction was allowed to warm to RT after 30 minutes. LCshowed good reaction after 1 hour. About 20 mL of hexanes was added to the reaction, and the white precipitate was filtered off. The filtration was adsorbed onto silica gel, and purified by MPLC with a 40G ISCO column, eluting with hexanes and EtOAc. LC-MS [M+H]: 256.0

As the paragraph descriping shows that 687636-93-7 is playing an increasingly important role.

Reference£º
Patent; MERCK SHARP & DOHME CORP.; TANG, Haifeng; YANG, Shu-Wei; MANDAL, Mihir; SU, Jing; LI, Guoqing; PAN, Weidong; TANG, Haiqun; DEJESUS, Reynalda; PAN, Jianping; HAGMANN, William; DING, Fa-Xiang; XIAO, Li; PASTERNAK, Alexander; HUANG, Yuhua; DONG, Shuzhi; YANG, Dexi; WO2015/171474; (2015); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.20582-55-2,Ethyl 4-methylthiazole-5-carboxylate,as a common compound, the synthetic route is as follows.

(1) A mixture was prepared by adding 2.10 g of potassium hydrogen carbonate, 44 mg of palladium chloride (II) and 205 mg of a copper bromide (I) dimethylsulfide complex to 2.20 g of 5-bromo-2-fluoronitrobenzene and the resulting mixture was suspended in 20 mL of toluene. Subsequently, a reaction mixture solution prepared by adding 2.05 g of ethyl 4-methyl-1,3-thiazole-5-carboxylate, 92.5 muL of isobutyric acid and 228 mg of di-t-butylcyclohexylphosphine to the resulting suspension was heated at 120C for 14 hours under a nitrogen atmosphere. The reaction mixture solution was celite-filtered to remove insoluble matter and water was added to the filtrate, and extraction was performed using ethyl acetate. The organic layer was washed with saline and dried and concentrated under reduced pressure. The resulting crude product was separated and purified by silica gel column chromatography to obtain 2.28 g of ethyl 2-(4-fluoro-3-nitrophenyl)-4-methyl-1,3-thiazole-5-carboxylate. ESI/MS m/e: 311.0 (M++H, C13H12FN2O4S)

20582-55-2, 20582-55-2 Ethyl 4-methylthiazole-5-carboxylate 298610, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; Teijin Pharma Limited; KAWANA, Asahi; KANAZAWA, Chikashi; TAKAHASHI, Yoshimasa; SHIRAKURA, Takashi; EP2952513; (2015); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.120-75-2,2-Methylbenzothiazole,as a common compound, the synthetic route is as follows.

Synthesis of the intermediate 1-benzyl-2-methylbenzothiazole quaternary ammonium salt. 20 mmol of 2-methylbenzothiazole and 22 mmol of benzyl bromide are added under argon protection into a 50 ml round-bottom flask containing 20 ml toluene, and the reaction mixture is stirred and heated to reflux for 24 hours. After the mixture cools down, the precipitate is filtered and the filter cake is washed with ethyl ether and dried to yield a pale-pink solid powder in a crude yield of 58%., 120-75-2

The synthetic route of 120-75-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.; US2009/17441; (2009); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.78364-55-3,6-Fluoro-2-hydrazinylbenzo[d]thiazole,as a common compound, the synthetic route is as follows.

General procedure: The mixture of 6-fluoro-2-hydrazinylbenzo[d]thiazole (2) (0.01 mol) and benzalde-hyde/substituted benzaldehyde (0.01 mol) was reuxed in ethanol (15 ml) at 70?80 ¡ãC for 3 h. The separated product obtained was ltered off, washed withdistilled water and recrystallized from methanol to give the correspondinghydrazone. The product obtained was further dissolved in acetic acid (20 ml) atroom temperature followed by the addition of sodium acetate (0.5 g). Bromine(2 mmol) in acetic acid (10 ml) was added dropwise to the reuxing reactionmixture. After 1 h, the mixture was poured onto crushed ice (100 g). The precipitateobtained was ltered off and crystallized from ethanol-dimethylformamide (1:1) togive crystals of (3a?3t)., 78364-55-3

The synthetic route of 78364-55-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Kukreja, Sharu; Sidhu, Anjali; Sharma, Vineet K.; Research on Chemical Intermediates; vol. 42; 12; (2016); p. 8329 – 8344;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

615-21-4,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.615-21-4,2-Hydrazinylbenzo[d]thiazole,as a common compound, the synthetic route is as follows.

A three-necked reactor equipped with a thermometer was charged with 5.00 g (30.3 mmol) of 2-hy- drazinobenzothiazole and 40 ml of N-methylpyrrolidone under a nitrogen stream to prepare a homogeneous solution. After the addition of 1.82 g (45.4 mmol) of sodium hydroxide and 4.90 g (36.3 mmol) of 4-bromo-1-butene to the solution, the mixture was stirred at 25 C. for 3 hours. After completion of the reaction, the reaction mixture was cooled to 5 C., and 40 ml of water was added to the reaction mixture to precipitate a solid, which was filtered off. The solid was washed with 10 ml of water and 25 ml of heptane, and dried using a vacuum dryer to obtain 6.00 g of a compound 10 as a white solid (conversion rate: 94.0%, reaction selectivity: 96.6%, yield: 84.9%).The structure of the target product was identified by ?H-NMR.10107] ?H-NMR (500 MHz, CDC13, TMS, oe ppm): 7.60 (d, 1H, J=7.8 Hz), 7.54 (d, 1H, J=7.5 Hz), 7.30 (dd, 1H, J=7.8 Hz, 7.8 Hz), 7.07 (dd, 1H, J=7.5 Hz, 7.8 Hz), 5.89 (ddt, 1H, J=10.3 Hz, 17.0 Hz, 7.0 Hz), 5.18 (dd, 1H, J=1.5 Hz, 17.0 Hz), 5.09 (dd, 1H, J=1.5 Hz, 10.3 Hz), 4.27 (s, 2H), 3.86 (t, 2H, J=7.0 Hz), 2.53 (dt, 2H, J=7.0 Hz, 7.0 Hz)

The synthetic route of 615-21-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ZEON CORPORATION; SANUKI, Kanako; OKUYAMA, Kumi; (12 pag.)US2017/8862; (2017); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.88982-82-5,4-Bromo-1,3-thiazole-2-carboxylic acid,as a common compound, the synthetic route is as follows.

88982-82-5, Step A:4-bromothiazole-2-carboxylic acid (1, 5.0 g, 24.0 mmol)Dissolved in ethylene glycol dimethyl ether (60mL)And water (20mL),Add 3,4-methyleneoxybenzeneboronic acid (29, 6.0 g, 36.0 mmol)And anhydrous potassium carbonate (5.0 g, 36 mmol),Then tetrakis(triphenylphosphine)palladium (1.4 g, 1.2 mmol) was added.The resulting mixture is heated under nitrogen toStir at 98 C for 24 hours.TLC analysis indicated the end of the reaction.The reaction solution was cooled to room temperature.Then add water (200 mL),The pH was adjusted to 2-3 with 6M hydrochloric acid.Filtered, the filter cake is dissolved in dichloromethane,The organic layer was washed with 20 mL of saturated sodium bicarbonate solution.Divide the water layer,The aqueous layer was adjusted to pH 2-3 with a 6M hydrochloric acid solution.Filter the solid,The filter cake is washed with water to neutrality.The filter cake was dried to give compound 30 (5.0 g).Yield: 84.0%.

88982-82-5 4-Bromo-1,3-thiazole-2-carboxylic acid 15122065, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; Zhejiang Haizheng Pharmaceutical Co., Ltd.; Wang Haibo; Zheng Xiaohe; Cai Zhengjiang; Zheng Shan; Ye Zhengchun; Ma Huidan; Lin Haiming; (54 pag.)CN108623532; (2018); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.90533-23-6,4-(3-Chlorophenyl)thiazol-2-amine,as a common compound, the synthetic route is as follows.

General procedure: (iv) 10a-10n (2 mmol, 1.0 equiv.) wasdissolved in dry dichloromethane (10 mL), and the reaction was followed to add 5-nitro-2-furoicacid (2.4 mmol, 1.2 equiv.), DMAP (2.4 mmol, 1.2 equiv.), EDCI (4 mmol, 2.0 equiv.),then stirred under room temperature for 1 day. The reaction mixture wasquenched with H2O (10 mL) and extracted with dichloromethane (2*30 mL).The combined organic layers were washed in turn with 2N HCl (20 mL), H2O(20 mL) and brine (20 mL). The organic layer was collected, dried overanhydrous Na2SO4 and concentrated in vacuo. The residue waspurified by column chromatography on silica gel (hexane/EtOAc=8:1 to 4:1) toprovide 12a-12n. 11a and 11b were prepared by thesame way, just starting from 10b and replacing 5-nitro- furic with2-furoic acid and 4-nitrobenzoic acid. The yield was 29~80%., 90533-23-6

The synthetic route of 90533-23-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Ran, Kai; Gao, Chao; Deng, Hongxia; Lei, Qian; You, Xinyu; Wang, Ningyu; Shi, Yaojie; Liu, Zhihao; Wei, Wei; Peng, Cuiting; Xiong, Lu; Xiao, Kunjie; Yu, Luoting; Bioorganic and Medicinal Chemistry Letters; vol. 26; 15; (2016); p. 3669 – 3674;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica