Day: March 24, 2022

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.99073-88-8,Ethyl 2-bromo-6-benzothiazolecarboxylate,as a common compound, the synthetic route is as follows.

Heat a degassed solution of ethyl 2-bromobenzothiazole-6- carboxylate (Step 1, 7.75 G, 27.1 mmol), tetrakis (TRIPHENYLPHOSPHINE) palladium (0) (1.7 g, 1.5 mmol), 4- (trifluoromethyl) phenylboronic acid (6.2 g, 32.6 mmol) and 2 M aqueous sodium carbonate solution (120 mL) in DME (90 mL) at reflux under nitrogen for 19 h. Dilute the cooled mixture with 1 N NAOH (1.2 L) and extract with methylene chloride (2 x 500 ML). Dry the combined organic extracts over MGS04, remove the solvents under reduced pressure and purify the residue by flash column chromatography on silica gel, eluting with hexanes/ethyl acetate (98: 2), to afford ethyl 2- (4-trifluoromethylphenyl) benzothiazole-6-carboxylate as a white solid (2.62 g, 27%) : 1H NMR (CDC13) 5 1.40 (t, 3H), 4.40 (q, 2H), 7.80 (d, 2H), 8.10 (d, 1H), 8.20 (m, 3H), 8.60 (s, 1H)., 99073-88-8

The synthetic route of 99073-88-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; ELI LILLY AND COMPANY; WO2004/63155; (2004); A1;,
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64987-16-2, Methyl 2-(2-aminothiazol-4-yl)acetate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,64987-16-2

A solution of methyl 2-(2-aminothiazol-4-yl)acetate (1.044 g, 5.00 mmol) and Na2CO3 (0.530 g, 5.00 mmol) in DMF (20 mL) was stirred at room temperature for 15 min. 2,2,2-Trichloro-1-(4,5-dibromo-1H-pyrrol-2-yl)ethan-1-one (1.852 g, 5.00 mmol) was added and mixture was stirred at 80 C overnight. Solvent was removed under reduced pressure, residue was suspended in ethyl acetate (60 mL) and successively washed with 10% citric acid (2 × 30 mL), saturated aqueous NaHCO3 solution (2 × 30 mL) and brine (30 mL), dried over Na2SO4, filtered and the solvent removed under reduced pressure. The crude product was recrystallized from methanol. Yield: 1.630 g (77.0%); white crystals; m.p. 200-202 C; 1H NMR (400 MHz, DMSO-d6): delta 3.63 (s, 3H, CH3), 3.75 (s, 2H, CH2), 7.04 (s, 1H, thiazole-H), 7.45 (d, 1H, J = 2.6 Hz, pyrrole-H), 12.42 (s, 1H, NH), 13.12 (s, 1H, NH) ppm; 13C NMR (100 MHz, DMSO-d6): delta 36.4, 51.7, 98.8, 107.8, 110.8, 115.4, 125.8, 143.7, 156.6, 157.8, 170.5 ppm.

64987-16-2 Methyl 2-(2-aminothiazol-4-yl)acetate 738059, athiazole compound, is more and more widely used in various fields.

Reference：
Article; Campos, Ludmila E.; Garibotto, Francisco M.; Angelina, Emilio; Kos, Jiri; Toma?i?, Tihomir; Zidar, Nace; Kikelj, Danijel; Gonec; Marvanova, Pavlina; Mokry, Petr; Jampilek; Alvarez, Sergio E.; Enriz, Ricardo D.; Bioorganic Chemistry; vol. 91; (2019);,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

64987-16-2,64987-16-2, Methyl 2-(2-aminothiazol-4-yl)acetate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

thyl 2-(2-bromothiazol-4-yl)acetate Methyl 2-(2-aminothiazol-4-yl)acetate (5g, 26.8mmol) was added under nitrogen to a solution of copper(ll) bromide (6.77g, 30mmol) and f-butyl nitrite (4.79ml, 40mmol) in acetonitrile (20ml) at -20C. The reaction mixture was slowly warmed to room temperature and stirred for two hours. The solution was then diluted with diethyl ether and washed with 25ml of 10 percent hydrochloric acid solution; the aqueous phase was extracted with 20ml of diethyl ether. The combined organic phases were dried and evaporated to dryness. The residue was purified by a standard method to yield the title compound. LC-MS : m/z (M+H) = = 235.9

The synthetic route of 64987-16-2 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; AGIOS PHARMACEUTICALS, INC.; LEMIEUX, Rene M.; POPOVICI-MULLER, Janeta; SALITURO, Francesco G.; SAUNDERS, Jeffrey O.; TRAVINS, Jeremey; CHEN, Yongsheng; WO2014/79150; (2014); 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.3622-35-3,Benzo[d]thiazole-6-carboxylic acid,as a common compound, the synthetic route is as follows.

To a solution of benzo[d]thiazole-6-carboxylic acid (2.5 g,13.95 mmol) in anhydrous CH2Cl2 (30 mL) was added triethylamine(1.95 mL, 13.95 mmol). The mixture was stirred at 10 C and a solution of ethyl chloroformate (1.33 mL, 13.95 mmol) in CH2Cl2(3 mL) was added dropwise. The resulting solution was stirred at10 C for an hour before addition of N-methoxymethylamine(1.36 g, 22.32 mmol) and triethylamine (1.95 mL, 13.95 mmol). Themixture was stirred 1 h 30 at 10 C, quenched with water, andextracted with CH2Cl2. The combined organic layers were driedover MgSO4, filtered, and evaporated under reduced pressure. Purification of the residue was performed by alumina column chromatography using CH2Cl2 as eluent to give compound 6 (1.22 g,39%) as a pale yellow oil.1H NMR (300 MHz, CDCl3) d 9.10 (s, 1H, CHS), 8.35 (d, 1H,J 1.5 Hz, H7), 8.14 (d, 1H, J 8.7 Hz, H4), 7.86 (dd, 1H, J 8.7,1.5 Hz, H5), 3.55 (s, 3H, CH3O), 3.41 (s, 3H, CH3N). 13C NMR (75 MHz,CDCl3) d 169.0, 156.1, 154.4, 133.4, 131.2, 126.4, 123.0, 122.6, 61.1,33.7.

3622-35-3, The synthetic route of 3622-35-3 has been constantly updated, and we look forward to future research findings.

Reference：
Article; Moine, Esperance; Dimier-Poisson, Isabelle; Enguehard-Gueiffier, Cecile; Loge, Cedric; Penichon, Melanie; Moire, Nathalie; Delehouze, Claire; Foll-Josselin, Beatrice; Ruchaud, Sandrine; Bach, Stephane; Gueiffier, Alain; Debierre-Grockiego, Francoise; Denevault-Sabourin, Caroline; European Journal of Medicinal Chemistry; vol. 105; (2015); p. 80 – 105;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

40283-41-8, 2-Aminothiazole-4-carboxylic acid is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

In a reaction flask equipped with a stirrer, a condenser and a thermometer, 7.4 g of propionic acid was added, and 100 mL of dichloromethane was further added. Add EDC · HCl19.2g, then add 16g of triethylamine, stirring at room temperature for some time, adding DMAP1.5g, stirring for some time,Then, 45.8 g of oleanolic acid was added, and the reaction was stirred at room temperature. TLC was used to control the progress of the reaction.After the completion of the reaction, an appropriate amount of EDC · HCl (15.4 g) and triethylamine (12.8 g)After stirring for a while at room temperature, 14.4 g of 2-amino-4-carboxythiazole was added and the reaction was continued at room temperature. TLC controlled the progress of the reaction. After completion of the reaction, the reaction solution was washed with 3 x 100 mL of dilute hydrochloric acid aqueous solution and then washed with 3 x 100 mL of saturated brine, dried, evaporated to dryness, and purified by ethyl acetate-petroleum ether to give 43.8 g of a white solid product(HPLC: 99.5%), Rf = 0.21 [single point, developing solvent: v (petroleum ether): v (ethyl acetate) = 4: 1]The total yield was 68.5%

40283-41-8, The synthetic route of 40283-41-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Tianjin Institute of pharmaceutical research; Liu, Ying; Liu, DengKe; Zhang, Dashuai; Niu, Duan; Wu, jiang; Zou, meixiang; (7 pag.)CN103265607; (2016); B;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

99073-88-8, Ethyl 2-bromo-6-benzothiazolecarboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,99073-88-8

Under nitrogen atmosphere, to a solution of this compound (4.00 g) in DMSO (100 mL)-CH3CN (100 mL) were added successively Pd(PPh3)4(485 mg) and sodium formate (4.76 g), and the mixture was stirred at 100 C. for 75 minutes. The solvent was evaporated under reduced pressure, and thereto was added water, and the mixture was extracted four times with Et2O, and dried over MgSO4. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column (hexane/ethyl acetate=10/1) to give ethyl 1,3-benzothiazole-6-carboxylate (1.21 g, 42%). 1H NMR (CDCl3, 400 MHz) delta 9.15 (s, 1H), 8.71 (dd, 1H, J=1.6, 0.5 Hz), 8.21 (dd, 1H, J=8.6, 1.6 Hz), 8.17 (dd, 1H, J=8.6, 0.5 Hz), 4.44 (q, 2H, J=7.1 Hz), 1.44 (t, 3H, J=7.1 Hz).

As the paragraph descriping shows that 99073-88-8 is playing an increasingly important role.

Reference：
Patent; Tokunaga, Teruhisa; Hume, William Ewan; Kitoh, Makoto; Nagata, Ryu; US2003/181496; (2003); 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.3034-53-5,2-Bromothiazole,as a common compound, the synthetic route is as follows.

3034-53-5, To a reaction flask were added a solution of n-butyl lithium in cyclohexane (60 mL,150 mmol, 2.5 mol/L) and anhydrous ethyl ether (100 mL). The mixture was stirred at -78 ocunder nitrogen protection, then 2-bromothiazole (20 g, 122 mmol) was added dropwise slowlyinto the mixture for 1 h. The mixture was heated to 70 oc and stirred for 30 min, then DMF(14.26 g, 195 mmol) was added for 1 h. The mixture was cooled to -40 oc and stirred for 1 h.The reaction mixture was warmed to 0 oc and to the reaction mixture was added HCl (4 M) (100mL), and the resulting mixture was partitioned. The aqueous layer was adjusted with saturatedaqueous potassium carbonte to pH about 7 to 8. The mixture was extracted with ethyl ether (100mL x 3). The combined organic layers were washed with saturated brine (100 mL), dried overanhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to give the titlecompound as brownish red oil (7 .0 g, 51 percent ).MS (ESI, pos. ion) m/z: 114.1 [M+Ht.

The synthetic route of 3034-53-5 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; SUNSHINE LAKE PHARMA CO., LTD.; TANG, Changhua; REN, Qingyun; YIN, Junjun; YI, Kai; LEI, Yibo; WANG, Yejun; ZHANG, Yingjun; (303 pag.)WO2018/108125; (2018); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

15864-32-1, 2-Amino-6-bromobenzothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred solution of 6-bromobenzo[J]thiazol-2-amine (2.50 g, 10.7 mmol) and DMAP (1.33 g, 12.8 mmol) in 20 mL dichloromethane at 0 C, AC2O (1.23 mL, 13.0 mmol) was added drop wise. After carried out at r.t. overnight, the mixture was quenched with 100 mL 1 N HC1. The resulting precipitate was filtered. The cake was washed with water and dried under vacuum to give A42-1 as a white solid (2.30 g, 79%). H NMR(300 MHz, CDC13) delta 9.90 (br s, 1H), 7.94 (s, 1H), 7.61 (d, / = 10.4 Hz, 1H), 7.54 (d, / = 10.4 Hz, 1H), 2.30 (s, 3H)., 15864-32-1

As the paragraph descriping shows that 15864-32-1 is playing an increasingly important role.

Reference：
Patent; ZHANG, Xiaohu; ACCRO BIOSCIENCE INC.; MA, Haikuo; ZHENG, Jiyue; HE, Sudan; (95 pag.)WO2018/17435; (2018); 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.1011-40-1,2-Phenylthiazole-5-carbaldehyde,as a common compound, the synthetic route is as follows.

EXAMPLE 82.2.2-Trinuoro-l-(2-phenyl-1.3-thiazol-5-vnethanone (H2) Step 1: 2,2,2-Trifluoro-l-(2-phenyl-l,3-thiazol-5-yl)ethanol (Hl)A solution (0.15 M) of 2-phenyl-l,3-thiazole-5-carbaldehyde (1.0 eq.) and CsF (0.2 eq.) in DME was treated with CF3SiMe3 (1.5 eq.) and then stirred for 3 h at RT. The reaction mixture was quenched by adding IN HCl and stirred for 30 min. The mixture was diluted with EtOAc, the organic phase was separated, washed with sat. aq. NaHCO3 solution and dried (Na2SO4). Evaporation of the solvent under reduced pressure afforded the product as an yellow oil. MS (ES+) CnH8F3NOS requires: 259, found: 260 (M+H)+., 1011-40-1

As the paragraph descriping shows that 1011-40-1 is playing an increasingly important role.

Reference：
Patent; ISTITUTO DI RICERCHE DI BIOLOGIA MOLECOLARE P. ANGELETTI SPA; WO2007/93827; (2007); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

3034-53-5, 2-Bromothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

3034-53-5, In an autoclave, 1 equiv. of aryl halide or heteroaryl halide, 2 equiv. of 1-alkylimidazole, 0.1 equiv. of CuI, 0.2 equiv. of dried K4[Fe(CN)6] (potassium hexacyanoferrate(II)), tetradecane as an internal standard for the GC analysis and a suitable amount of toluene were combined under argon and heated to 160 C. (The K4[Fe(CN)6] was dried by heating powdered K4[Fe(CN)6]x3H2O in a vacuum of 1 mbar to 80 C. for at least 24 hours.) After 16 hours, the reaction mixture was cooled to room temperature. Conversion and yield were determinable by means of gas chromatography. An isolation of the product took place according to the customary workup (distillation, crystallization or chromatography).

As the paragraph descriping shows that 3034-53-5 is playing an increasingly important role.

Reference：
Patent; Muller, Nikolaus; Magerlein, Wolfgang; Beller, Matthias; Schareina, Thomas; Zapf, Alexander; US2009/62541; (2009); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica