Heterocyclic Building Blocks-Thiazole

103878-58-6, 5-Bromothiazole-4-carboxylic acid is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of 5-bromo-1 ,3-thiazole-4-carboxylic acid (3.09 g, 14.85 mmol) in DCM (75 mL) was added DIPEA (5.17 mL, 29.71 mmol) followed by cyclopropylamine (1.18 mL, 17.08 mmol) and HATU (6.21 g, 16.34 mmol). The reaction mixture was allowed to stir at room temperature for 6 h. The mixture was then diluted with H2O (50 mL) and the layers were separated. The aqueous layer was further extracted with DCM (3 chi 25 mL) and the combined organics dried over MgSCU, filtered and concentrated under reduced pressure. The crude reaction product was purified by flash chromatography eluting with a gradient system of 0-50% EtOAc in Petroleum ether (40-60) to give 5-bromo-N-cyclopropyl-1 ,3- thiazole-4-carboxamide (2.88 g, 78 % yield) as a white solid.LC-MS (Method D) 247.2/249.2 [M+H]+; RT 1.82 min, 103878-58-6

103878-58-6 5-Bromothiazole-4-carboxylic acid 21297375, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; REDX PHARMA PLC; STOKES, Neil; (163 pag.)WO2017/46603; (2017); A1;,
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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.

Reference Production Example 9To a mixture of 5.0 g of benzothiazole-6-carboxylic acid and 50 ml of DMF was added 7.4 g of 2-fluoro-3-hydroxybenzylamine hydrobromide, 12.0 g of BOP reagent and 11.0 g of triethylamine, and the mixture was stirred at room temperature for 30 minutes. To the reaction mixture was added water, and the mixture was extracted with ethyl acetate . The organic layer was washed with saturated saline, then, dried over magnesium sulfate and concentrated under reduced pressure . The resultant residue was subjected to silica gel chromatography, and 9.0 g of N- (2-fluoro-3-hydroxyphenyl) methyl-benzothiazole-6-carboxam ide was obtained.N- (2-fluoro-3-hydroxyphenyl )methyl-benzothiazole-6-c arboxamide 1H-NMR (DMSO-d6) delta: 9.78 (IH, s) , 9.54 (IH, s) , 9.13 (IH, t, J= 5.7 Hz), 8.70 (IH, d, J= I.7 Hz), 8.16 (IH, d, J= 8.5 Hz), 8.05 (IH, dd, J=8.5, 1.7Hz), 6.93 (IH, t, J=7.8Hz), 6.87-6.77 (2H, m) , 4.53 (2H, d, J = 5.6 Hz).

3622-35-3, As the paragraph descriping shows that 3622-35-3 is playing an increasingly important role.

Reference：
Patent; SUMITOMO CHEMICAL COMPANY, LIMITED; WO2009/157527; (2009); A1;,
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Thiazole | chemical compound | Britannica

288-47-1, Thiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: To a stirred solution of Cs2CO3 (0.75 mmol) and CuI (1.25 mol%)in DMF (1.0 mL) was added aryl iodide (0.75 mmol), azole (0.5mmol) and 4a (0.25 mol%) under argon atmosphere at room temperature. Then the mixture was stirred at 120 C for 18 h. After cooling, filtration, and evaporation, the residue was purified by preparative TLC on silica gel plates eluting with petroleum ether/EtOAc to afford the corresponding products., 288-47-1

The synthetic route of 288-47-1 has been constantly updated, and we look forward to future research findings.

Reference：
Article; Wang, Cong; Li, Yang; Lu, Beibei; Hao, Xin-Qi; Gong, Jun-Fang; Song, Mao-Ping; Polyhedron; vol. 143; (2018); p. 184 – 192;,
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Thiazole | chemical compound | Britannica

103878-58-6, 5-Bromothiazole-4-carboxylic acid is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred solution of compound LXXX 2 (0.7 g, 3.37 mmol), compound LXXX-2A (0.53 g, 4.36 mmol), TEA (677 mg, 6.7 mmol) in toluene (10 mL) was added DPPA (1.2 g, 4.36 mmol) under nitrogen. After the addition, the solution was heated to reflux under nitrogen over night. The solution was concentrated. The residue was purified by column chromatography on silica gel (Petroleum ether:EtOAc = 3: 1) to afford compound LXXX-3 (0.76 g, yield 69%). MS (ESI) m/z (M+Na)+ 350.9., 103878-58-6

103878-58-6 5-Bromothiazole-4-carboxylic acid 21297375, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; INTERMUNE, INC.; BUCKMAN, Brad, O.; NICHOLAS, John, B.; EMAYAN, Kumaraswamy; SEIWERT, Scott, D.; WO2013/25733; (2013); A1;,
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3034-53-5, 2-Bromothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A flask which in 2-bromothiazole (16.4 g) and 50 ml of THF solution were put was cooled in an iced bath, and then 55 ml of a THF solution of 2 M isopropylmagnesium chloride was added dropwise there to under in a in nitrogen atmosphere while stirring the solution. After dropewise addition the rection mixture was stirred for 1 hour, and then a zinc chloride-tetramethylethylenediamine complex (30.3 g) was added. the resuting mixture was stirring for 1 hour at room temperature, and then 1-bromo-4-iodobenzene (28.3 g) and Pd(PPh3)4 (3.5 g) were added and then heated and stirred for 1.5 hours at reflux temperature. After cooling the reaction solution to room temperature, to remove the metal ions of the catalyst, a solution prepared by dissolving the compound ethylenediamine Inc. acid, use the sodium salt dihydrate equivalent to approximately 2-fold molar with respect to the objective to the appropriate amount of water (after and it stirred to fall abbreviated) EDTA · 4Na in an aqueous solution. Then, after removing also separated by adding toluene, and the solvent was distilled off under reduced pressure to the solution, and purified by silica gel column chromatography (eluent: toluene / ethyl acetate = 50/1 (volume ratio)) to give 2-(4-bromophenyl)thiazole (18.3g)., 3034-53-5

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

Reference：
Patent; JNC Co. Ltd.; Baba, Daisuke; Ono, Yohei; (128 pag.)KR2015/138163; (2015); A;,
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Thiazole | chemical compound | Britannica

118452-02-1, 2-Aminothiazole-4-carboxamide is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 3: Synthesis of 3-[1-(4-Carbamoyl-thiazol-2-yl)-5-(4-methoxy-phenyl)-1H-pyrrol-2-yl]-propionic acid ethyl ester (1C, R1=4-carbamoyl-thiazol-2-yl, R2=4-methoxy-phenyl) (0161) To a solution of 7-(4-methoxy-phenyl)-4,7-dioxo-heptanoic acid ethyl ester (0.5 mmol), see scheme 1, in ethanol (2 mL) were added the amine (1.5 equivalents) and p-toluenesulfonic acid monohydrate (0.5 eq.). The reaction was run using the Biotage Microwave Initiator for 1 to 3 hours at 150 C. The solvent was removed in vacuo to obtain the crude mixture which was purified by prep silica gel plate to obtain the final product (70 mg, 38%).

118452-02-1, As the paragraph descriping shows that 118452-02-1 is playing an increasingly important role.

Reference：
Patent; Nivalis Therapeutics, Inc.; Wasley, Jan; Rosenthal, Gary J.; Sun, Xicheng; Strong, Sarah; Qiu, Jian; US9138427; (2015); B2;,
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Thiazole | chemical compound | Britannica

14779-17-0, 2-Amino-5-methylbenzothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A benzene solution of hepta-O-benzo- b-D-lactosylisocyanate (0.001 mol, 1.1g) in 10 ml was mixed withsuspension of 2-amino benzothiazole (0.001 mol,0.15g) in 5 ml and mixture was refluxed over waterbath for 6 hr. Benzene was distilled off and stickymass obtained as a residue was triturated severaltimes with petroleum ether (60-800) to afford a whitesolid. It was crystallized from eq. ethanol.This reaction of 1-hepta-O-benzoyl- b-D-lactosylisocyanate was also extended to several other 2-aminobenzothiazoles and the corresponding 1-hepta-Obenzoyl- b-D-lactosyl-3-(2) benzothiazolyl carbamides(3b-f) have been isolated.3a: IR (KBr): 3449 (-N-H stretch), 3061 (Ar C-H),(Ar C=C), 1269 (C-N), 1174 (C-O), 1101 & 1026(Characteristic of Lactose), 852 (C-S); 1H NMR(CDCl3): 8.16-7.17 (39H, m, ArH), 6.18 (1H, s, NH),6.01 (1H, s, NH), 5.74-4.21 (14H, m, lactosyl protons);Mass : m/z 1245 (M+), 1053, 947, 931, 917, 135,121, 105., 14779-17-0

As the paragraph descriping shows that 14779-17-0 is playing an increasingly important role.

Reference：
Article; Pande, Kedar P.; Ghayalkar, Renu B.; Indian Journal of Heterocyclic Chemistry; vol. 25; 1; (2015); p. 45 – 46;,
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With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.4146-24-1,6-Chloro-2-methylbenzo[d]thiazole,as a common compound, the synthetic route is as follows.,4146-24-1

Step (iv): 2-(Bromomethyl)-6-chloro-l,3-benzothiazole To the solution of 6-chloro-2-methyl-l,3-benzothiazole (15 g, 81.96 mmol) in carbon tetrachloride (500 ml) was added benzoyl peroxide (0.92 g, 0.364 mmol) and N- bromosuccinimide (18.52 g, 10.40 mmol) and the resulting mixture was stirred at reflux for 14 hours. Upon cooling the mixture was filtered through a “Celite” bed, washed with dichloromethane and the solvent was evaporated in vacuo to obtain crude product.The crude compound was purified by column chromatography (silica, 0-5 % ethyl acetate in ft-hexane) to afford the title compound.1H NMR (DMSO-i) delta ppm 5.14 (s, 2 H), 7.58-7.61 (d, 1 H), 8.01-8.03 (d, 1 H), 8.3 (s, 1 H)

4146-24-1 6-Chloro-2-methylbenzo[d]thiazole 138133, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; TAKEDA CAMBRIDGE LIMITED; TAKEDA PHARMACEUTICAL COMPANY LIMITED; FIELDHOUSE, Charlotte; GLEN, Angela; ROBINSON, John Stephen; FUJIMOTO, Tatsuhiko; WO2015/55994; (2015); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

101080-15-3, 5-Isopropylthiazol-2-amine is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: A Schlenk tube was charged with ethyl 2-iodo-phenylcarbamates (1 mmol), CuI (19mg, 0.1 mmol), and Na2S*9H2O (3 mmol). The tube was evacuated and backfilled with argon (3 times), and the 2 mL of DMF was added. The reaction mixture wasstirred at 80 C for 10-16 h, then 3 mL of AcOH was added to the cooled reaction mixture and the mixture was stirred at 130 C for another 36 h. Saturated NaHCO3 (10mL) was added and the mixture was extracted with ethyl acetate. The organic layer was washed with H2O, brine, and dried over Na2SO4. After removal of the solvent in vacuo, the residue was purified by column chromatography on silica gel to provide the desired benzothiazolone.

101080-15-3, The synthetic route of 101080-15-3 has been constantly updated, and we look forward to future research findings.

Reference：
Article; Li, Jiaojiao; Zhang, Yihua; Jiang, Yongwen; Ma, Dawei; Tetrahedron Letters; vol. 53; 20; (2012); p. 2511 – 2513;,
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.133692-16-7,2-Amino-5-bromo-4-methylthiazole hydrochloride,as a common compound, the synthetic route is as follows.

EXAMPLE 65 A mixture of 2-amino-5-bromo-4-methylthiazole hydrochloride (4.5 g), 2-mercaptopyridine (2.3 g) and potassium carbonate (7.0 g) in N,N-dimethylformamide (100 ml) was heated at 90 C. for 3 hours with stirring. The reaction mixture was concentrated under reduced pressure and water was added to this residue. The mixture was extracted with a mixture of tetrahydrofuran and ethyl acetate, washed with aqueous saturated sodium chloride and dried over magnesium sulfate. The solvent was concentrated under reduced pressure to give solid. The solid was subjected to column chromatography on silica gel (silica gel 60, 70-230 mesh; Merck: 300 g) and eluted with a mixture of chloroform and methanol (10:1). The fractions containing the objective compound were combined and concentrated under reduced pressure to give oil. Again the oil was subjected to column chromatography on silica gel (silica gel 60, 70-230 mesh; Merck: 200 g) and eluted with a mixture of dichloromethane and acetone (5:1). The fractions containing the objective compound were combined and concentrated under reduced pressure to give 2-amino-4-methyl-5-(2-pyridylthio)thiazole (2.1 g, yield: 47.9%). NMR (DMSO-d6, 200 MHZ, ppm): 2.13 (3H, s), 6.97 (1H, m), 7.15 (1H, m), 7.28 (2H, s), 7.65 (1H, m), 8.40 (1H, m) Mass: M+1 224, M 223, m/e 208, 190, 181, 145, 111

133692-16-7, The synthetic route of 133692-16-7 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Fujisawa Pharmaceutical Co., Ltd.; US5256675; (1993); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica