Category: 3034-53-5

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

The (4-formylphenyl)boronic acid 118 (0.30 g, 2.0 mmol), 2-bromo-1,3-thiazole 119a (0.33 g, 2.0 mmol), Pd(PPh3)4(0.12 g, 0.1 mmol), aqueous solution of potassium carbonate (0.4 M, 5 mL), ethanol (5 mL) and toluene (2 mL) were added to a 50 mL flask under nitrogen. The reaction mixture was stirred at 115 C. for 24 hours and then cooled to room temperature. After removing the solvent, the crude residue was purified by column chromatography on silica gel using EA/ hexane (1/5) as eluent. The product 120a was obtained as a white solid at a yield of 95%

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

Reference：
Patent; National Health Research Institutes; Academia Sinica; Chen, Chih-Hao; Shih, Chuan; Chen, Chiung-Tong; Wang, Hwei-Jiung; Huang, Kai-Fa; US2020/71312; (2020); 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.

Step 1 thiazol-2-ylmethanol To a solution of n-BuLi (8.4 ml , 1.6 mol/1 , 13.4 mmol) in THF (30 mL) was added 2- bromothiazole (377 mg, 2.12 mmol) dropwise under nitrogen atmosphere at -70 °C, and the mixture was stirred at the temperature for 1 h. Then DMF (1.4 ml, 18.3 mmol) was added into the solution dropwise under nitrogen atmosphere at -70 °C. The resulting mixture was stirred at the temperature for 1 h. Then the mixture was quenched with aqueous saturated ammonium chloride, diluted with ethyl acetate and water, and the phases were separated. The organic phase was washed with brine, dried over sodium sulfate, filtered and concentrated to give yellow oil. The yellow oil was dissolved in methanol (15 ml) , cooled to -60 °C, ans sodium borohydride (463 mg , 12.2 mmol) was added portionwise under nitrogen atmosphere. The mixture was stirred at the temperature for 1 h. The reaction was quenched with acetone and concentrated. The residue was diluted with ethyl acetate and water, and the phases were separated. The organic layer was dried over sodium sulfate, filtered and concentrated, then purified by silica gel chromatography eluting with petroleum/ ethyl acetate= 3: 1 to give thiazol-2-ylmethanol (230 mg, 16.4 percent yield) as brown oil . LCMS MH+ 1 16.

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

Reference：
Patent; HYDRA BIOSCIENCES, INC.; CHENARD, Bertrand; GALLASCHUN, Randall; WO2014/143799; (2014); A2;,
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

To a 40 ml microwave reactor was added 1.04 g of 2-formylphenylboronic acid (6.9 mmol) of 1.14 g of 2-bromothiazole(6.9 mmol), 240 mg of bistriphenyl-phosphine palladium dichloride (Pd (PPh3) 2Cl2, 0.34 mmol). then,To the mixture was added 13.8 ml of 1 M Na2CO3 (13.8 mmol) and 10 ml of CH3CN. Sealed reactor,The reaction was run under microwave at 160 C for 5 minutes.LCMS shows the desired reaction of the desired product. The reaction mixture was then poured into a separation funnel. Add 200 ml of dichloromethaneAlkane and 100 ml of water for extraction. The dichloromethane layer was dried over MgSO4. The solvent was removed to give the crude product, which was passed through siliconThe column chromatography was eluted with a hexane / ethyl acetate mixture (5/1 to 2/1)To give pure 2-thiazol-2-yl-benzaldehyde (0.5 g, yield: 38%)., 3034-53-5

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

Reference：
Patent; Laixiken Pharmaceutical Co., Ltd.; A Luojiyasami·dewasajiayalayi; Jin Haihong; Shi Zhicai; A Xiaoke·tunuli; Wang Ying; Zhang Chengmin; (63 pag.)CN104045626; (2017); B;,
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.

Example 262A 2-Phenylthiazole A solution of 2-bromothiazole (1.0 g, 6.1 mmol, Aldrich) in dioxane (25 mL) was treated with phenylboronic acid (0.82 g, 6.4 mmol), Pd(PtBu3)2 (0.16 g, 0.3 mmol, Strem) and Cs2CO3 (3.97 g, 12.2 mmol). The mixture was stirred at 80 C. for 12 hours. The reaction mixture was cooled to ambient temperature, concentrated under reduced pressure, and purified by column chromatography (SiO2, 1:1 hexanes/ethyl acetate) to give provide the title compound (0.69 g, 4.3 mmol, 70%). 1H NMR (CDCl3, 300 MHz) 67.33 (m, 1H), 7.41-7.48 (m, 3H), 7.87 (d, 1H, J=3.4 Hz), 7.95-8.00 (m, 2H); MS (DCl/NH3) m/z 162 (M+H+)., 3034-53-5

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

Reference：
Patent; Basha, Anwer; Bunnelle, William H.; Dart, Michael J.; Gallagher, Megan E.; Ji, Jianguo; Li, Tao; Pace, Jennifer M.; Ryther, Keith B.; Tietje, Karin R.; Mortell, Kathleen H.; Nersesian, Diana L.; Schrimpf, Michael R.; US2005/101602; (2005); 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.

0.15mol containing a solution of 2-bromothiazole added dropwise to a solution containing 0.18mol butyllithium was added dropwise for about 2h, after the addition was completed, stirring was continued for 1h, maintained at low temperature (-78 deg.] C) reaction carried out under . 0.3mol ethyl acetate and then added to the solution dropwise addition was completed, stirring was continued for 3h, the reaction is complete, the organic phase extracted was allowed to stand, washed with distilled water, dried over anhydrous Na2SO4 was added, and then distilled under reduced pressure collecting bp89 ~ 91 / 1.6kPa fraction, 2-acetyl thiazole 18.16g. The yield was 95.2%., 3034-53-5

3034-53-5 2-Bromothiazole 76430, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; Wutong Aroma Chemicals Co. Ltd.; Li, Xin; Sun, Bin; Wei, Jie; Wang, Xiaodong; Zhao, Leizhen; Zang, Chuanjin; Zi, Yanyan; Liu, Yuanwu; Gao, Ming; (8 pag.)CN105348216; (2016); A;,
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

(1) 4-(thiazol-2-yl)benzaldehyde 2-Bromothiazole (0.538 ml, 6.06 mmol), 4-formylphenylboronic acid (1.0 g, 6.67 mmol), and Na2CO3 (1.61 g) were suspended in the mixed solution of toluene (25 ml), ethanol (5 ml), and H2O (5 ml). The mixture was stirred at room temperature for 15 minutes under an argon gas atmosphere. After reducing the pressure inside of the reaction container by using a vacuum line, the mixture was degassed by introducing Ar gas and this procedure was repeated twice. After that, tetrakis(triphenylphosphine)palladium (0.701 g, 0.606 mmol) was added, and the mixture was stirred for 15 hours by heating under reflux. The end point of the reaction was confirmed on TLC (EtOAc:n-hexane=1:4), and the mixture was cooled to room temperature. H2O (50 ml) and EtOAc (50 ml) were added and the mixture was stirred for 15 minutes. Black insoluble matter was removed by filtration with Celite and the filtrate was separated by the step of extraction/separation. The organic layer was washed with saturated brine (50 ml) and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The resulting residue was purified on silica gel column chromatography (EtOAc:hexane=1:3) to obtain the title compound (985 mg) as an opaque white solid., 3034-53-5

3034-53-5 2-Bromothiazole 76430, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; MEIJI SEIKA PHARMA CO., LTD.; YOSHIDA, Satoshi; NINOMIYA, Tomohisa; US2013/217663; (2013); 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.

In the reaction vessel, 0.02 mol of K4[Fe(CN)6], a designed amount of CuI, and 50 mL of N-methylimidazole were sequentially added, and the temperature was raised to the designed temperature, and 0.1 mol of the injection pump was slowly added while stirring. 2-Bromothiazole, after the addition was completed, stirring was continued, and the reaction temperature was kept constant under nitrogen protection.After the reaction is completed, the temperature is lowered to room temperature, 50 mL of H 2 O is added, and then the organic solvent layer is extracted with a selected organic solvent (3×100 mL), the temperature is lowered to 0 C., concentrated hydrochloric acid is added until pH=2 to 3, and then the aqueous layer of hydrochloric acid is used. Extraction by organic solvent extraction (3 x 50 mL), combining all organic solvent layers, and then steaming to give 2-cyanothiazole. The target product is detected by nuclear magnetic resonance, and the hydrogen spectrum carbon spectrum of the target product is as follows:, 3034-53-5

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

Reference：
Patent; Bai Dongyue; (8 pag.)CN109369563; (2019); A;,
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

General procedure: Substrate (0.1 mmol) and catalyst (2 mol%, 2 mumol) were mixed in 3 cm3 THF, organomagnesium reagent(1.3 mmol) was added at room temperature. After 6 h at 60 C, 1.5 cm3 NaCl solution (15%) was added carefully, the organic layer was dried over MgSO4, evaporated and purified via silica column chromatography.

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

Reference：
Article; Mastalir, Mathias; Kirchner, Karl; Monatshefte fur Chemie; vol. 148; 1; (2017); p. 105 – 109;,
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

To a solution of n-BuLi (8.4 ml, 1.6 mol/l, 13.4 mmol) in THF (30 mL) was added 2-bromothiazole (377 mg, 2.12 mmol) dropwise under nitrogen atmosphere at -70° C., and the mixture was stirred at the temperature for 1 h. Then DMF (1.4 ml, 18.3 mmol) was added into the solution dropwise under nitrogen atmosphere at -70° C. The resulting mixture was stirred at the temperature for 1 h. Then the mixture was quenched with aqueous saturated ammonium chloride, diluted with ethyl acetate and water, and the phases were separated. The organic phase was washed with brine, dried over sodium sulfate, filtered and concentrated to give yellow oil. The yellow oil was dissolved in methanol (15 ml), cooled to -60° C., and sodium borohydride (463 mg, 12.2 mmol) was added portionwise under nitrogen atmosphere. The mixture was stirred at the temperature for 1 h. The reaction was quenched with acetone and concentrated. The residue was diluted with ethyl acetate and water, and the phases were separated. The organic layer was dried over sodium sulfate, filtered and concentrated, then purified by silica gel chromatography eluting with petroleum/ethyl acetate=3:1 to give thiazol-2-ylmethanol (230 mg, 16.4percent yield) as brown oil. LCMS MH+ 116.

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

Reference：
Patent; HYDRA BIOSCIENCES, INC.; Chenard, Bertrand L.; Gallaschun, Randall J.; Kimball, Spencer David; US2014/275528; (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.3034-53-5,2-Bromothiazole,as a common compound, the synthetic route is as follows.

The (4-formylphenyl)boronic acid 118 (0.30 g, 2.0 mmol), 2-bromo-l,3-thiazole 119a (0.33 g, 2.0 mmol), Pd(PPh3)4(0.12 g, 0.1 mmol), aqueous solution of potassium carbonate (0.4 M, 5 mL), ethanol (5 mL) and toluene (2mL) were added to a 50 mL flask under nitrogen. The reaction mixture was stirred at 115 C for 24 hours and then cooled to room temperature. After removing the solvent, the crude residue was purified by column chromatography on silica gel using EA/hexane (1/5) as eluent. The product 120a was obtained as a white solid at a yield of 95%.

3034-53-5, 3034-53-5 2-Bromothiazole 76430, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; SHIH, Chuan; NATIONAL HEALTH RESEARCH INSTITUTES; ACADEMIA SINICA; CHEN, Chih-Hao; CHEN, Chiung-Tong; WANG, Hwei-Jiung; HUANG, Kai-Fa; (130 pag.)WO2020/47360; (2020); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica