Heterocyclic Building Blocks-Thiazole

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.20358-06-9,4-Fluorobenzo[d]thiazol-2-amine,as a common compound, the synthetic route is as follows.

General procedure: Compound 9 (0.1mmol) added to dry CH2Cl2 (15mL) was stirred at 0C and oxalyl chloride (2.0mmol) was dripped into the mixture and stirred at the same temperature for 12h. After the reaction, the solvent and excess oxalyl chloride was evaporated under the reduced pressure, then add CHCl3. Compounds 2 (0.1mmol) and triethylamine (0.15mmol) were added to the mixture and reflux at 65C for 5h. After the reaction, the solvent was evaporated under reduced pressure, and the crude product was purified by chromatography on silica gel eluted with petroleum CH2Cl2/CH3OH (V: V=60:1) to offer the target compounds 11a-11k in good yields., 20358-06-9

As the paragraph descriping shows that 20358-06-9 is playing an increasingly important role.

Reference£º
Article; Jin, Le; Huang, Rizhen; Huang, Xiaochao; Zhang, Bin; Ji, Min; Wang, Hengshan; Bioorganic and Medicinal Chemistry; vol. 26; 8; (2018); p. 1759 – 1775;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

51640-36-9,51640-36-9, 2-Chlorothiazole-5-carbonitrile is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

2-{[2-(4-acetylpiperazin-1-yl)pyrimidin-4-yl]amino}-1,3-thiazole-5-carbonitrile (4-5) 2-(4-acetylpiperazin-1-yl)pyrimidin-4-amine 4-4 (0.1 g, 0.45 mmol) was dissolved in dry TBF and then 1 equivalent of sodium hydride (0.036 g, 0.45 mmol) was added and this was stirred for 20 minutes at 25 C. then 2-chloro-1,3-thiazole-5-carbonitrile 2-2 (0.065 g, 0.45 mmol) was added followed immediately by 1 more equivalent of sodium hydride. The reaction was then stirred at 100 C. for 3 hours. The reaction was cooled to 25 C. and methanol was added. This solution was loaded directly onto a silica column and eluted with DCM:MeOH:NH4OH (95:5:0.5). Fractions were combined and evaporated to yield the product, 4-5. Hi-Res MS: calc: 330.1132 found: 330.1137. 1H-NMR (DMSO): 8.33 ppm (s, 1H); 8.19 ppm (d, 1H); 6.34 ppm (d, 1H); 3.88 ppm (m, 2H); 3.80 ppm (m, 2H); 3.57 ppm (m, 4H); 2.07 ppm (s, 3H).

The synthetic route of 51640-36-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Bilodeau, Mark T.; Hartman, George D.; Hoffman JR., Jacob M.; Sisko, John T.; Manley, Peter J.; Smith, Anthony M.; Tucker, Thomas J.; Lumma JR., William C.; Rodman, Leonard; US2002/137755; (2002); 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.2103-99-3,4-(4-Chlorophenyl)thiazol-2-amine,as a common compound, the synthetic route is as follows.

3,4-Dibutyryloxybenzoic acid (216 mg, 0.73 mmol) was dissolved in dichloromethane (5 mL). DMF (50 muL) and 2 M oxalyl chloride in CH2Cl2 (0.6 mL) were added to it at RT The mixture became a yellowish solution. After 0.5 hour stirring, the solvent was removed in vacuo. The residue was dissolved in dioxane (10 mL). 2-Amino-4-(4-chlorophenyl)thiazole (210 mg, 1.0 mmol) was added to it, followed by addition of pyridine (150 uL). The mixture was heated at 100¡ã C. for 1 hour. After cooling down to RT, the solvent was removed in vacuo. The residue was dissolved in EtOAc (50 mL) and washed with water (50 mL). The EtOAc solution was dried over sodium sulfate. After filtration and concentration, the residue was purified by chromatography eluted with CHCl3. The collected fractions were concentrated and purified again by chromatotron (silica) eluted with CHCl3 to afford the product (120 mg, Y=34percent). 1H NMR (CDCl3) delta 10.01 (bs, 1 H), 7.70-7.80 (m, 4 H), 7.35 (d, J=8.7 Hz, 2 H), 7.30 (dd, J=8.44 Hz, J=1.8 Hz, 1 H), 7.18 (s, 1 H), 2.55 (t, d=7.5 Hz, 2 H), 2.54 (t, d=7.5 Hz, 2 H), 1.70-1.86 (m, 4 H), 1.06 (t, d=7.5 Hz, 3 H), 1.05 (t, d=75 Hz, 3 H); 13C NMR (CDCl3) delta 170.5, 170.2, 163.0, 158.2, 148.9, 145.7, 142.3, 133.7, 132.5, 130.0, 128.7 (2 C), 127.2 (2 C), 125.4, 123.9, 123.1, 108.5, 35.9, 35.8, 18.5, 18.4, 13.7 (2 C); MS (MALDI-TOF) m/z calcd for C24H24ClN2O5S (M+H+) 487, found 487., 2103-99-3

The synthetic route of 2103-99-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Apogee Biotechnology Corporation; US2007/32531; (2007); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

348-40-3, 6-Fluorobenzo[d]thiazol-2-amine is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,348-40-3

Concentrated hydrochloric acid (0.067 mol) was added dropwise with stirring tohydrazine hydrate (0.12 mol) at 5-6 C followed by ethylene glycol (30 mL);thereafter, 6-uorobenzo[d]thiazol-2-amine (1) (20 mmol) was added in portionsand the resultant mixture was reuxed for 2-3 h and cooled at room temperature.The reaction progress was monitored by TLC using toluene:ethylacetate (75:25) asmobile phase. The reaction mixture was ltered and the resulting precipitates werewashed with distilled water. The resulting crude was recrystallized from ethanol. IR(KBr) mmax: 3010 (=C-H str), 1645 (C=C str), 1398 (C=N str). The 1HNMR(DMSO-d6) spectrum of this product showed signals: d 7.2-7.4 (3H, m, Ar C-H), at4.0 (1H, br, NH) and 4.75 (2H, br, NH2) ppm. The peaks in its 13CNMR (DMSO-d6)d: 106.1, 112.4, 115.5, 129.7, 145.5, 157.5, 171.2 ppm.

The synthetic route of 348-40-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Kukreja, Sharu; Sidhu, Anjali; Sharma, Vineet K.; Research on Chemical Intermediates; vol. 42; 12; (2016); p. 8329 – 8344;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

19654-14-9, 2-(3-Bromophenyl)benzothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 1,3,5-tris(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzene (4) (500 mg, 1.14 mmol), 2-(3-bromophenyl)benzo[d]thiazole (7) (1.15 g, 3.98 mmol), tetrakis(triphenylphosphine)palladium (140 mg, 0.12 mmol), sodium carbonate (1.51 g, 14.2 mmol), THF (25 mL), and water (14 mL) was degassed for 25 minutes. The mixture was heated at reflux (80 C.) overnight under argon. After cooling, the mixture was poured into ethyl acetate (125 mL) then washed with saturated sodium bicarbonate solution (100 mL), water (100 mL), and brine (100 mL). A flash column (gradient of 5 to 10% acetone in hexanes) and precipitation from methylene chloride/methanol gave 611 mg of material (ET-3) in 76% yield., 19654-14-9

19654-14-9 2-(3-Bromophenyl)benzothiazole 6382460, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; Zheng, Shijun; US2011/196158; (2011); 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.34259-99-9,4-Bromothiazole,as a common compound, the synthetic route is as follows.

2- (3- (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) phenyl) imidazo [1,2- a] pyridine(100 mg, 0.31 mmol),Palladium acetate (4 mg, 0.016 mmol),Triphenylphosphine (16 mg, 0.06 mmol),And sodium carbonate (66 mg, 0.62 mmol)After adding 1,4-dioxane and water at a ratio of 1: 1 in 2 mL portions4-Bromothiazole (51 mg, 0.31 mmol) was added thereto, and the mixture was stirred at 90 ¡ã C for 16 hours.After the reaction is completed, the reaction mixture is cooled to room temperature and the reaction product is separated into water and ethyl acetate. The combined organic layers were concentrated and the concentrate was purified by silica gel column chromatography (dichloromethane: ethyl acetate, 10: 1 v / v) to give 4- (3- (imidazo [1,2- a] pyridin- ) Phenyl) thiazole (45 mg, 52percent).

34259-99-9, As the paragraph descriping shows that 34259-99-9 is playing an increasingly important role.

Reference£º
Patent; Korea Research Institute of Chemical Technology; Jeon Mun-guk; Kim Gwang-rok; Huh Yun-jeong; Lee Jun-mi; (27 pag.)KR2018/101671; (2018); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

29927-08-0, 5,6-Dimethylbenzo[d]thiazol-2-amine is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Preparation of acetoacetamide derivatives (3a-e) was carried out as shown in Scheme 1. 2,2,6-Trimethyl-1,3- dioxine-4-one (1) (2eq) and appropriate arylamine (2a-e) (1eq) were mixed and refluxed for about 2-4h in toluene. The progress of the reactions was checked by TLC. Upon completion of the reaction, the product was filtered, washed with small portions of petroleum ether. Further purification was performed by crystallization of obtained product in hot ethanol. Characteristics data for prepared N-(aryl)-3- oxobutanamides are as follows:

29927-08-0, The synthetic route of 29927-08-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Ebadi, Ahmad; Khoshneviszadeh, Mehdi; Javidnia, Katayoun; Ghahremani, Mohammad Hossein; Firuzi, Omidreza; Miri, Ramin; Letters in drug design and discovery; vol. 14; 8; (2017); p. 885 – 897;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

88982-82-5,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.88982-82-5,4-Bromo-1,3-thiazole-2-carboxylic acid,as a common compound, the synthetic route is as follows.

To a solution of 4-bromothiazole-2-carboxylic acid 8 (5.5 g, 26.8 mmol) in anhydrous DMF (30 mL) was added carbonyl diimidazole (CDI) (5.2 g, 32.3 mmol), and the reaction mixture was stirred at room temperature for 1 h. (E)-4-[3-(3,4,5-Trimethoxyphenyl]-1,2,4-thiadiazol-5-ylamino)-N’-hydroxybenzamidine 7 (13 g, 32.3 mmol) was added to the reaction mixture and it was stirred at 110 C for 15 h. After completion of the process, the mixture was cooled down and poured into ice-cold water (35 mL), extracted by ethyl acetate (3¡Á15 mL), and the combined organic phases were washed with brine, dried over anhydrous sodium sulphate, filtered off, and concentrated under vacuum. The crude product was purified by column chromatography using ethyl acetate/hexane (1 : 1) to afford pure compound 9, yield 79 %.

The synthetic route of 88982-82-5 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Sudhakar; Rao, A. Srinivasa; Reddy, Ch. Venkata Ramana; Russian Journal of General Chemistry; vol. 89; 8; (2019); p. 1696 – 1701;,
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.78364-55-3,6-Fluoro-2-hydrazinylbenzo[d]thiazole,as a common compound, the synthetic route is as follows.

78364-55-3, General procedure: A mixture of compound 2 (0.0549 g, 0.0003 mol), the appropriate aromatic aldehyde (0.00033 mol) and glacial acetic acid (0.1 mL) in ethanol (5 mL) was heated under microwave (20 W) at 80 ¡ãC for 10 min. On cooling, the precipitated solid was collected by filtration, washed with water, dried and crystallized to give compounds 3-29.

The synthetic route of 78364-55-3 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Gabr, Moustafa T.; El-Gohary, Nadia S.; El-Bendary, Eman R.; El-Kerdawy, Mohamed M.; Ni, Nanting; Chinese Chemical Letters; vol. 27; 3; (2016); p. 380 – 386;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

556-90-1, 2-aminothiazol-4(5H)-one is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

556-90-1, General procedure: To the magnetically stirred solution of 17 (232 mg, 2 mmol) in HOAc (7 mL), was added NaOAc (500 mg, 6 mmol). After 15 min 3,4-dimethoxybenzaldhyde (16a, 400 mg, 2.4 mmol) was added and the reaction mixture was heated under reflux for 72 h. The HOAc was removed under reduced pressure and the resultant solid was washed successively with water, methanol and EtOAc to obtain the desired products as solid. 10.2.1.3 5-(4-Hydroxy-3-methoxybenzylidene)-2-iminothiazolidin-4-one (14c) Yellow solid; mp > 200 C; 215 mg, 43% yield; IR (neat) numax = 3364, 2955, 1735, 1680, 1584 cm-1; 1H NMR (400 MHz, CD3SOCD3) delta 9.76 (s, 1H), 9.29 (br s, 1H), 9.05 (s, 1H), 7.50 (s, 1H), 7.13 (s, 1H), 7.06 (d, J = 8.28, 1H), 6.9 (d, J = 7.92, 1H); 13C NMR (100 MHz, CD3SOCD3): delta 175.91, 148.92, 148.35, 130.35, 125.94, 125.81, 123.69, 116.49, 113.88, 56.00; HRMS (ESI-TOF): m/z calculated for C11H10N2O3S [M+H]+, 251.0490; found 251.0491.

556-90-1 2-aminothiazol-4(5H)-one 11175, athiazole compound, is more and more widely used in various fields.

Reference£º
Article; Arfeen, Minhajul; Bhagat, Shweta; Patel, Rahul; Prasad, Shivcharan; Roy, Ipsita; Chakraborti, Asit K.; Bharatam, Prasad V.; European Journal of Medicinal Chemistry; vol. 121; (2016); p. 727 – 736;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica