Category: thiazole

18903-18-9, Ethyl 5-aminothiazole-4-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Intermediate 24 Intermediate 25 (1.12g, 5.84mmol) and 5-aminothiazole-4-carboxylic acid ethyl ester (0.9g, 5.84mmol) were combined in toluene (25ml_). The mixture was stirred under a nitrogen atmosphere at 60C for 1 hour and then at room temperature for 18 hours. The mixture was partitioned between 1 M hydrochloric acid and ethyl acetate and the layers separated. The aqueous layer was extracted with ethyl acetate and the combined organic layers dried with Na2S04, filtered and concentrated in vacuo to dryness. The residue was purified by chromatography on silica eluting with 0-70% ethyl acetate/cyclohexane. The fractions containing the desired product were combined and the solvents removed by evaporation in vacuo to give Intermediate 24 (298mg) as a cream solid. LCMS (Method 2) Rt 3.09 min; m/z(M+H)+ 328, 18903-18-9

As the paragraph descriping shows that 18903-18-9 is playing an increasingly important role.

Reference£º
Patent; ANTABIO SAS; LEMONNIER, Marc; DAVIES, David; PALLIN, David; WO2014/198849; (2014); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

348-40-3, 6-Fluorobenzo[d]thiazol-2-amine is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: 1,1?-Carbonyldiimidazole (12 mmol)was added to a solution of 6-(substituted)benzo[d]thiazol-2-amine (10 mmol) in dry dichloromethane (50 mL) and the reaction was stirred for 20 h at reflux conditions. The reaction mixture was cooled down to 2-8 C, filtered and washed with cold dichloromethane. The crude product was dried under reduced pressure to yield N-(6-(substituted)benzo[d]thiazol-2-yl)-1H-imidazole-1-carboxamide as a white solid (90-95%) and used in next reaction without further purification.

348-40-3, The synthetic route of 348-40-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Hroch, Lukas; Benek, Ondrej; Guest, Patrick; Aitken, Laura; Soukup, Ondrej; Janockova, Jana; Musil, Karel; Dohnal, Vlastimil; Dolezal, Rafael; Kuca, Kamil; Smith, Terry K; Gunn-Moore, Frank; Musilek, Kamil; Bioorganic and Medicinal Chemistry Letters; vol. 26; 15; (2016); p. 3675 – 3678;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

3292-77-1, 2-Bromo-1-(thiazol-2-yl)ethanone is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 2-bromo-1-(thiazol-2-yl)ethanone (2.5 g; 12 mmol), acetonitrile (70 ml) and imidazole (1.65 g; 24 mmol) was stirred at ambient temperature for 1 hour. The mixture was evaporated to dryness and the residue partitioned between dichloromethane and water. The organic phase was separated, washed with saturated brine and evaporated to give 2-(imidazol-1-yl)-1-(thiazol-2-yl)-ethanone as a brown solid (1.17 g; 50%). MP: 109-112 C. 1H NMR (DMSO d6, 400 MHz) delta: 5.6 (2H,s); 6.85-8.1 (5H,m).

3292-77-1, 3292-77-1 2-Bromo-1-(thiazol-2-yl)ethanone 2795212, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; AstraZeneca UK Limited; Zeneca-Pharma SA; US6342765; (2002); B1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

72850-52-3,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.72850-52-3,Ethyl 2-chloro-4-(trifluoromethyl)thiazole-5-carboxylate,as a common compound, the synthetic route is as follows.

2-Chloro-4-trifluoromethyl-thiazole-5-carboxylic acid ethyl ester (259 mg, 1.0mmol), sodium ethoxide (23% by weight in ethanol) (0.33 ml, 1.1 mmol) and ethanol (2ml) were heated under reflux for 2 hours. The mixture was partitioned between water andethyl acetate. The organic phase was dried over magnesium sulfate and concentrated togive the product as a yellow gum (187 mg, 70% yield). ^-NMR (400 MHz, CDC13):1.36 (3H, t, Me), 1.45 (3H, t, Me), 4.35 (2H, q, CH2), 4.55 (2H, q, CH2).

As the paragraph descriping shows that 72850-52-3 is playing an increasingly important role.

Reference£º
Patent; SYNGENTA LIMITED; WO2006/24820; (2006); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

170961-15-6, tert-Butyl thiazol-2-ylcarbamate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To tetrahydrofuran solution (100 ml) of 47 (10.0 g, 49.9 mmol), t-butoxy potassium (6.72 g, 59.9 mmol) was added at 0C while stirring, stirred for 10 min at the same temperature, added iodomethane (4.66 ml, 74.9 mmol), and stirred for 16 hours at room temperature. The insolubles were removed by filtering the reaction mixture, and the filtrate was evaporated to dryness under reduced pressure. The residue was purified by silica gel column chromatography (solvent: n-hexane/ethyl acetate = 9/1), to obtain 48 (6.53 g, 61%) of colorless solid substance. mp 51?52 C, 1H NMR(500MHz, DMSO-D6)delta 1.53(9H,s),3.47(3H,s),7.25(1H,d,J=3.5Hz),7.45(1H,d,J=3.5Hz) ,IR(Neat)1734cm-1, APCI-MS m/z 215[M+H]+, 170961-15-6

The synthetic route of 170961-15-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Tohoku University; EP2103611; (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.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

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

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.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;,
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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.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