Day: March 18, 2022

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.96929-05-4,Ethyl 2-(((tert-butoxycarbonyl)amino)methyl)thiazole-4-carboxylate,as a common compound, the synthetic route is as follows.,96929-05-4

a. Tert-butyl N-[[4-(hydroxymethyl)thiazol-2-yl]methyl]carbamate To a stirred solution of ethyl 2-(((tert-butoxycarbonyl)amino)methyl)thiazole-4-carboxylate (1 g, 3.49 mmol) in THF (20 mL) was added LiAlH4 (7.0 mL, 6.98 mmol, 1M in THF) drop wise under nitrogen at 0 C and the reaction mixture was allowed stir at room temperature for 4 h. The reaction mixture was cooled to 0 C and quenched with EtOAc (30 mL) followed by saturated aqueous sodium sulphate solution. Then stirred at same temperature for 30 min., filtered and filtrate was evaporated. The crude was chromatographed on silica eluting with 40% EtOAc in petroleum ether affording a yellow solid (510 mg, 59%). M/z 245.1 (M+H)+.

The synthetic route of 96929-05-4 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Antabio SAS; The designation of the inventor has not yet been filed; (149 pag.)EP3628672; (2020); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

3622-35-3, Benzo[d]thiazole-6-carboxylic acid is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Production Example 1Zero point one eight (0.18) g of benzothiazole-6-carboxylic acid, 0.19 g of 2-fluoro-3-methoxybenzylamine hydrochloride, 0.23 g of WSC and3 ml of pyridine were mixed and stirred at room temperature for2 hours. To the reactionmixture was added water, and the mixture was extracted with ethyl acetate. The resultant organic layer was washed sequentially with water and saturated saline, then, dried over anhydrous sodium sulfate, and concentrated under reduced pressure . The resultant residue was washed with hexane, and 0.23 g ofN- (2-fluoro-3-methoxyphenyl)methyl-benzothiazole-6-carboxam ide (hereinafter, referred to as the compound of the present invention (I)) was obtained.The compound of the present invention (1) 1H-NMR (CDCl3) delta: 3.90 (3H, s) , 4.75 (2H, d, J = 4.9 Hz), 6.58(IH, br s), 6.92-7.09 (3H, m) , 7.88 (IH, dd, J = 8.5, 1.7 Hz), 8.16 (IH, d, J = 8.5 Hz), 8.48 (IH, d, J = 1.5 Hz), 9.11 (IH, s) ., 3622-35-3

3622-35-3 Benzo[d]thiazole-6-carboxylic acid 601670, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; SUMITOMO CHEMICAL COMPANY, LIMITED; WO2009/157527; (2009); 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

Wherein, 6-bromo-2-(4-nitrophenyl)benzothiazole can be prepared by steps of: 5 g of 6-bromo-2-amino-benzothiazole was added to 25 mL of a solution of potassium hydroxide at a concentration of 10 M, and then 5 mL of ethylene glycol was added to form a mixed solution which was stirred at 125 C. for 2 h to obtain 2-amino-bromophenyl mercaptan; 1H NMR: 400 MHz DMSO delta 7.21-7.26 (m, 1H), 6.99 (s, 1H), 6.81-6.72 (m, 1H), 6.39 (s, 1H), 5.72 (s, 2H)., 15864-32-1

15864-32-1 2-Amino-6-bromobenzothiazole 85149, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; Neuboron Medtech Ltd.; LIU, Yuan-Hao; (14 pag.)US2018/298037; (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.96929-05-4,Ethyl 2-(((tert-butoxycarbonyl)amino)methyl)thiazole-4-carboxylate,as a common compound, the synthetic route is as follows.

General procedure: KOH aq. (10%) was added to a solution of the ester in THF and the reaction mixture was stirred at room temperature for 1h. The pH was brought to 4 by addition of 5M HCl and then extracted with EtOAc. The organic layer was dried over MgSO4 and concentrated in vacuo to afford the acid., 96929-05-4

96929-05-4 Ethyl 2-(((tert-butoxycarbonyl)amino)methyl)thiazole-4-carboxylate 9925901, athiazole compound, is more and more widely used in various fields.

Reference：
Article; Pena, Stella; Scarone, Laura; Manta, Eduardo; Stewart, Lindsay; Yardley, Vanessa; Croft, Simon; Serra, Gloria; Bioorganic and Medicinal Chemistry Letters; vol. 22; 15; (2012); p. 4994 – 4997;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

939-69-5,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.939-69-5,6-Hydroxybenzo[d]thiazole-2-carbonitrile,as a common compound, the synthetic route is as follows.

General procedure: The hydroxy- or methoxycarbonitrile derivative (1 eq) was added to the cysteine derivative (1.05 eq) and sodium carbonate (3 eq) in 5 ml water. The mixture was stirred at room temperature for three hours before addition of dilute HCl (1 M) to pH ? 3.5 ? 4.0. The product was isolated by extraction with diethyl ether, washed by water, followed by evaporation

As the paragraph descriping shows that 939-69-5 is playing an increasingly important role.

Reference：
Article; Rothweiler, Ulli; Eriksson, Jonas; Stensen, Wenche; Leeson, Frederick; Engh, Richard A.; Svendsen, John S.; European Journal of Medicinal Chemistry; vol. 94; (2015); p. 140 – 148;,
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.119778-44-8,4-Ethyl-2-methylthiazole-5-carboxylic acid,as a common compound, the synthetic route is as follows.

EXAMPLE 16 In a similar apparatus to Example 1, 18.8 g (0.11 mole) of 2-methyl-4ethylthiazole-5carboxylic acid were suspended in 150 ml of toluene, followed by the addition of 0.1 g of N,N-dimethylformamide. Under heating and reflux, phosgene was blown at a rate of 1.5 l/hr for 4 hours (0.27 mole). After completion of the reaction, the reaction mixture was filtered and the filtrate was concentrated to obtain 20.3 g of 2-methyl-4-ethylthiazole-5-carboxylic acid chloride. Its purity and yield were 98.0% and 97.5%, respectively.

119778-44-8, The synthetic route of 119778-44-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Mitsui Toatsu Chemicals, Inc.; US5136042; (1992); A;,
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.

Benzothiazole-6-carboxylic acid (71a, 5.0 g, 27.93 mmol) was dissolved in DCM (96 mL) and MeOH (32 mL) and cooled to 0 C. A solution of trimethylsilyl-diazomethane (28 mL, 2.0M in hexane) was added dropwise and the resulting solution was gradually warmed to RT and stirred overnight. The reaction was quenched slowly by careful addition of HOAc (2 mL) and stirred for 30 min. The solution was concentrated, diluted with EtOAc and washed with saturated NaHCO3 solution. The organic extracts were dried (Na2SO4), filtered and concentrated in vacuo. The crude residue was purified by SiO2 chromatographed eluting with 15% EtOAc/hexane to afford 4.44 g (82%) of 71b as a white solid: 1H NMR (300 MHz, CDCl3): 9.15 (s, 1H), 8.68 (m, 1H), 8.16 (m, 2H), 3.97 (s, 3H).

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

Reference：
Patent; Roche Palo Alto LLC; US2006/40927; (2006); 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.425392-45-6,Ethyl 5-chlorothiazole-4-carboxylate,as a common compound, the synthetic route is as follows.

20 g Ethyl 5-chlorothiazol-4-carboxylate was added to 150 ml ammonia water, and reacted at room temperature with stirring for 5 hr. The resultant reaction mixture was extracted with ethyl acetate, dried over anhydrous sodium sulfate, filtered and concentrated to obtain 9.5 g of a crude product which was recrystallized from ethyl acetate to obtain 5.8 g of a needle crystal (yield 30%) with mp 213-216C; 1H NMR (DMSO-d6) 7.69(1H,s); 7.83 (1H,s); 9.05(1H,s)., 425392-45-6

As the paragraph descriping shows that 425392-45-6 is playing an increasingly important role.

Reference：
Patent; Beijing Molecule Science and Technology Co., Ltd.; EP2039686; (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.19989-67-4,Benzo[d]thiazole-6-carbaldehyde,as a common compound, the synthetic route is as follows.

General procedure: rhodanine or hydantoine (1 eq), the corresponding aldehyde (1 eq) and sodium acetate (3eq) were dissolved in 5mL of acetic acid and the solution heated at 110C, if necessary under microwave conditions (130W for ?10min). After cooling, the precipitate was filtered off, washed to remove all the acetic acid and dried in vacuo. The reaction has been described in Mendgen etal. [39] to be stereospecific producing the Z-isomer as confirmed by the single peak in the HPLC. 4.1.2 Synthesis of (Z)-5-(benzo[d]thiazol-6-ylmethylene)-2-thioxothiazolidin-4-one (16) Rhodanine (0.254 g, 1.84 mmol), 1,3-benzothiazole-6-carbaldehyde (0.300 g, 1.84 mmol) and sodium acetate (0.452 g, 5.51 mmol) were used following the general procedure A described above. Yield: 2%. Mp: > 300 C. 1H NMR (500 MHz, DMSO-d6) delta ppm 7.76 (d, J = 8.51 Hz, 1H) 7.78 (s, 1H) 8.21 (d, J = 8.51 Hz, 1H) 8.47 (s, 1H) 9.50-9.58 (m, 1H) 13.88 (br. s., 1H). 13C NMR (126 MHz, DMSO-d6) delta ppm 123.74 (s, 1C) 125.09 (s, 1C) 125.97 (s, 1C) 128.30 (s, 1C) 130.26 (s, 1C) 131.13 (s, 1C) 134.94 (s, 1C) 153.93 (s, 1C) 159.56 (s, 1C) 169.43 (s, 1C) 195.71 (s, 1C). LC-MS (ESI): m/z MH+ = 279.

19989-67-4, As the paragraph descriping shows that 19989-67-4 is playing an increasingly important role.

Reference：
Article; Mariano, Marica; Hartmann, Rolf W.; Engel, Matthias; European Journal of Medicinal Chemistry; vol. 112; (2016); p. 209 – 216;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica