Heterocyclic Building Blocks-Thiazole

615-21-4,615-21-4, 2-Hydrazinylbenzo[d]thiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

In a four-neck reactor equipped with a thermometer,In a nitrogen stream,10.0 g (60.5 mmol) of 2-hydrazinobenzothiazole was dissolved in 150 ml of DMF.To this solution,39.4 g (121.0 mmol) of cesium carbonate and 9.65 g (72.5 mmol) of 1-bromo-2-butyne were added and the whole of the mixture was stirred at 25 C. for 20 hours.After completion of the reaction, the reaction solution was poured into 1000 ml of water and extracted with 500 ml of ethyl acetate. After drying the ethyl acetate layer with anhydrous sodium sulfate, sodium sulfate was filtered off. Ethyl acetate was distilled off from the filtrate under reduced pressure using a rotary evaporator to obtain a brown solid. This brown solid was purified by silica gel column chromatography (n-hexane: ethyl acetate = 85: 15) to obtain 6.25 g of Intermediate S (yield: 47.5%) as a white solid.

As the paragraph descriping shows that 615-21-4 is playing an increasingly important role.

Reference£º
Patent; ZEON CORPORATION; SAKAMOTO, KEI; OKUYAMA, KUMI; SANUKI, KANAKO; (77 pag.)JP2017/206554; (2017); A;,
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693-95-8, 4-Methylthiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

693-95-8, tep 2: Synthesis of tert-butyl N-[(lS)-l-[4-(4-methyl-l,3-thiazol-5- yl)phenyl] ethyl] carbamate (P)[0421] To a stirred solution of tert-butyl N-[(lS)-l-(4-bromophenyl)ethyl]carbamate (O,15.0 g, 49.97 mmol) in DMA (100 mL), under an atmosphere of nitrogen, was added 4-methyl- 1,3-thiazole (9.9 g, 99.84 mmol), potassium acetate (9.8 g, 99.86 mmol) and Pd(OAc)2(112.5 mg, 0.50 mmol) at rt. The resulting mixture was then stirred at 120C for 2h. The reaction mixture was then cooled to rt, diluted by water (120mL), and extracted with ethyl acetate (200 mL x 3). The organic layers were combined, dried over anhydrous sodium sulfate and then concentrated under reduced pressure to give a crude residue, which was purified by flash silica gel chromatography (eluent: ethyl acetate/petroleum ether, v: v = 1:5) to give P (yield: 47%) as a white solid. LC-MS (ES+): m/z 319.13 [MH+], tR= 0.97 min (2.0 minute run).

693-95-8 4-Methylthiazole 12748, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; ARVINAS, INC.; JIN, Meizhong; CREW, Andrew, P.; DONG, Hanqing; WANG, Jing; SIU, Kam; FERRARO, Caterina; CHEN, Xin; QIAN, Yimin; (351 pag.)WO2016/118666; (2016); A1;,
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5398-36-7, Ethyl 2-aminothiazole-4-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

5398-36-7, 2-Amino-thiazole-4-carboxylic acid ethyl ester (1.4 g, 8 mmol) is dissolved in acetonitrile (15 ml) and N-bromosuccinimide. (1.7 g, 9.6 mmol, 1.2 equiv.) was added in one portion. The mixture was stirred at room temp. for 3 hours, then filtered and the filtrate was evaporated. After purification on silica-gel with ethyl acetate/n-heptane as eluent, 0.71 g of an off-white solid were obtained: MS: m/e 248.9 (M-H).

As the paragraph descriping shows that 5398-36-7 is playing an increasingly important role.

Reference£º
Patent; Gubler, Marcel; Haap, Wolfgang; Hebeisen, Paul; Kitas, Eric A.; Kuhn, Bernd; Minder, Rudolf E.; Schott, Brigitte; Wessel, Hans P.; US2007/281979; (2007); A1;,
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615-21-4, 2-Hydrazinylbenzo[d]thiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

615-21-4, 3.0 g of a compound represented by the formula (I-6-16), 4.6 g of 1-iodohexane, 8.9 g of cesium carbonate, and 20 mL of dimethyl sulfoxide were put into a reactor and heated with stirring. After ordinary post-treatment, this was purified through column chromatography to give 2.3 g of a compound represented by the formula (I-6-17).

As the paragraph descriping shows that 615-21-4 is playing an increasingly important role.

Reference£º
Patent; DIC Corporation; Horiguchi, Masahiro; Kadomoto, Yutaka; (139 pag.)US2018/22716; (2018); A1;,
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1603-91-4, 4-Methylthiazol-2-amine is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A mixture of appropriate 2-substituent-1H-benzimidazole-4-carboxylic acid (1 mmol), EDC¡¤HCl (0.29 g, 1.5 mmol), HOBt (0.20 g, 1.5 mmol) and Et3N (0.15 g, 1.5 mmol) in DMF (10 mL) was stirred for 1 h at 0 C. Then appropriate amine (1.05 mmol) was added to the solution. The solution was heated up to 25 C, stirred for 12 h and then evaporated to dryness. The solid was washed with water and dried. The products were purified on silica gel column using 10:1 ethyl acetate/ethanol.

1603-91-4, 1603-91-4 4-Methylthiazol-2-amine 74143, athiazole compound, is more and more widely used in various fields.

Reference£º
Article; Xue, Fei; Luo, Xianjin; Ye, Chenghao; Ye, Weidong; Wang, Yue; Bioorganic and Medicinal Chemistry; vol. 19; 8; (2011); p. 2641 – 2649;,
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100367-77-9, Ethyl 2-bromothiazole-4-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Ethyl 2-bromothiazole-4-carboxylate (97 mg, 0.409 mmol) was dissolved in a solvent mixture of ethanol (15 mL) and water (7.5 mL) and treated with aqueous sodium hydroxide (2.50 M, 2.54 mL). The mixture was stirred at 35 C for 30 minutes, and then partitioned between ethyl acetate (100 mL) and HCl (1.0 M, 100 mL). The organic phase was dried (sodium sulfate) and concentrated to afford the carboxylic acid as a white solid. To a solution of this material in pyridine (5 mL) were added 4-aminopyridine (46.1 mg, 0.490 mmol), HOBt (78 mg, 0.511 mmol), DMAP (10.0 mg, 0.082 mmol) and EDAC (117 mg, 0.613 mmol). The reaction mixture was stirred at room temperature for 18 hours then filtered through a frit The filtrate was concentrated in vacuo and purified by preparative HPLC [Waters Nova- Pak HR Cl 8 6mum 60A Prep-Pak cartridge column (40 x 100 mm), 10%-100% gradient of acetonitrile in 10 mM aqueous ammonium acetate over 12 minutes at a flow rate of 70 mL/minute] to provide the titled compound: 1H NMR (400 MHz, methanol-D4) delta ppm 7.83 – 7,90 (m, 2 H), 840 (s, 1 H), 8.43 – 8.46 (m, 2 H). MS (ESI) m/z = 284/286 (M+H)+., 100367-77-9

The synthetic route of 100367-77-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; ABBOTT LABORATORIES; WO2008/58096; (2008); A2;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.170235-26-4,Methyl 2-bromothiazole-4-carboxylate,as a common compound, the synthetic route is as follows.

170235-26-4, A solution of morpholine (3.0 mL, 34.2 mmol) in EtOH (50 mL) was treated with methyl 2-bromothiazole-4-carboxylate (1.65 g, 7.43 mmol) and DIEA (6.8 mL, 39.4 mmol) and the resulting mixture was refluxed for 18 h under N2. The reaction mixture was then concentrated under reduced pressure and the residue was purified on the ISCO using a REDISEP 24 g column (0 to 30% EtOAc-DCM) to give the product (1.22 g, 72%; mixture of methyl and ethyl esters) as a yellow oil. This mixture was used as such in the next step. LCMS (APCI): calcd for C10H15N2O3S [M+H]+ m/z 277.03, found 277.1; LCMS (APCI): calcd for C9H13N2O3S [M+H]+ m/z 229.06, found 229.1

170235-26-4 Methyl 2-bromothiazole-4-carboxylate 2763213, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; BRISTOL-MYERS SQUIBB COMPANY; UNIVERSITE DE MONTREAL; BANVILLE, Jacques; REMILLARD, Roger; RUEDIGER, Edward H.; DEON, Daniel H.; GAGNON, Marc; DUBE, Laurence; GUY, Julia; PRIESTLEY, Eldon Scott; POSY, Shoshana L.; MAXWELL, Brad D.; WONG, Pancras C.; WO2013/163279; (2013); A1;,
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39136-60-2, 5-Ethylthiazol-2-amine is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: These compounds were prepared by adapting a published procedure.2 To a mixture of 2, 4, 7a-n,7p and acid chloride (1.1 equiv.) in THF (20 mL) was added triethylamine (3 equiv.). The reaction mixture was stirred at room temperature for 15 min and quenched with distilled water. Following addition of a 0.1 N HCl aqueous solution, the product was extracted with DCM. The organic phase was washed with a saturated aqueous solution of NaHCO3, dried over MgSO4 and concentrated in vacuo. The residue was purified by silica gel column chromatography

39136-60-2, As the paragraph descriping shows that 39136-60-2 is playing an increasingly important role.

Reference£º
Article; Ishita, Keisuke; Stefanopoulos, Stavros; Khalil, Ahmed; Cheng, Xiaolin; Tjarks, Werner; Rappleye, Chad A.; Bioorganic and Medicinal Chemistry; vol. 26; 9; (2018); p. 2251 – 2261;,
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16629-15-5, 2-Bromo-5-chlorothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of Intermediate 2 (30.1 g, 50% purity, 54.2 mmo[), 2-bromo-5-ch[oro-1 ,3-thiazo[e (14.0 g, 70.4 mmo[), [1,1, -Bis-(dipheny[phosphino)-ferrocen]pa[[adium(II) dich[oride (6.63 g, 8.13 mmo[), and K2C03 (65 mL, 2.OM, 130 mmo[)in THF (890 mL) was stirred at ref[ux unti[ comp[ete conversion. The so[vent was evaporated under reduced pressure, water added and the mixture extracted with EtOAc. The combined organic [ayers were washed with saturated aqueous NaC[so[ution and evaporated to dryness under reduced pressure. Crude materia[ was purified by co[umn chromatography (si[ica ge[, hexane / EtOAc gradient) to give5.21 g (34% yie[d) of the tit[e compound.1H NMR (400 MHz, DMSO-d6): oe [ppm] 3.85 – 3.90 (m, 3 H) 7.44 (dd, 1 H) 7.51 (dd, 1 H) 7.84 (t, 1 H) 7.99 (5, 1 H) 10.35 (br. s., 1 H).

16629-15-5, 16629-15-5 2-Bromo-5-chlorothiazole 18519960, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; EVOTEC AG; DAVENPORT, Adam James; BRAEUER, Nico; FISCHER, Oliver Martin; ROTGERI, Andrea; ROTTMANN, Antje; NEAGOE, Ioana; NAGEL, Jens; GODINHO-COELHO, Anne-Marie; (703 pag.)WO2016/91776; (2016); A1;,
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924287-65-0, Methyl 2-bromo-4-fluorobenzo[d]thiazole-6-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,924287-65-0

To a 25 mL round-bottom flask purged and maintained under an ine1i atmosphere ofnitrogen was added ( 1 S,4S,5R)-2-azabicyclol2.2.1]heptan-5-y 1 3-(2,6-dichloropheny l)-5-(lt1uorocyclopropyl)-l,2-oxazole-4-carboxylate JOi (JOO mg, 0.24 mmol, 1.0 equiv.), DMA (5mL), methyl2-bromo-4-t1uoro-l,3-benzothiazole-6-carboxylate A-l (78 mg, 0.27 mmoL 1 1015 equiv), and Cs2C01 (238 mg, 0.73 mmoL 3.0 equiv.) and the resulting mixture was stirred at60 C overnight. 100 mL off-hO was then added, the aqueous mixtme was extracted v.¡¤ithethyl acetate (1 00 mL x 2). The combined organic extracts were washed with brine (20 mL x2), dried over sodium sulfate, filtered, and concentrated in vacuo. The crude product Vaspurified by silica gel column chromatography eluting with PE:EA (3: 1) to give 80 mg (55%)20 of methyl 2-[ (lS,4S,5R)-5-[ [ 5-cyclopropyl-3-(2,6-dichorophenyl)-1 ,2-oxazol-4-y l]carbony loxy] -2-azabicycl o[2.2.1 ]heptan-2-y l] -4-fluoro-1 ,3-benzothiazole-6-carboxy late(l qj) as a light yellow oil.

As the paragraph descriping shows that 924287-65-0 is playing an increasingly important role.

Reference£º
Patent; ARDELYX, INC.; CHAO, Jianhua; JAIN, Rakesh; HU, Lily; LEWIS, Jason Gustaf; BARIBAULT, Helene; CALDWELL, Jeremy; (582 pag.)WO2018/39386; (2018); A1;,
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