Heterocyclic Building Blocks-Thiazole

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

A solution of di-tert-butyl dicarbonate (279 mg, 1.28 mmol) in toluene (3 ml) was added a vessel containing methyl 2-(2-aminothiazol-4-yl)acetate (200 mg, 1.16mmol), the reaction mixture was heated at 85 C for 24h. LCMS showed that the desired product was detected, the mixture was concentrated to give the residue, the residue was purified by a standard method to give the desired product. LC-MS : m/z (M+H)= 273.3

As the paragraph descriping shows that 64987-16-2 is playing an increasingly important role.

Reference：
Patent; AGIOS PHARMACEUTICALS, INC.; LEMIEUX, Rene M.; CHEN, Yongsheng; WO2014/79136; (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.131106-70-2,6-(Trifluoromethyl)benzo[d]thiazole,as a common compound, the synthetic route is as follows.

General procedure: In a two-necked flask equipped with a reflux condenser were placed RhH(PPh3)4 (4 mol%, 11.5 mg), 1,2-bis(diphenylphosphino)ethane (8 mol%, 8.0 mg), 1,3-benzothiazole 5 (0.25 mmol, 27.3 mL), and (alpha-phenylthio)isobutyrophenone 6 (0.25 mmol, 64.0 mg) in chlorobenzene (0.25 mL) under an argon atmosphere, and the solution was heated at reflux for 3 h. The mixture was purified by flash column chromatography on silica gel giving 7 (55.8 mg, 92%) and isobutyrophenone 8 (34.3 mg, 93%) with the recovery of 5 (3.5 mg, 10%) and 6 (0.8 mg, 1%).

131106-70-2, 131106-70-2 6-(Trifluoromethyl)benzo[d]thiazole 14810650, athiazole compound, is more and more widely used in various fields.

Reference：
Article; Arisawa, Mieko; Toriyama, Fumihiko; Yamaguchi, Masahiko; Tetrahedron Letters; vol. 52; 18; (2011); p. 2344 – 2347;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

2346-00-1, 2-Methyl-4,5-dihydrothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Example 2 3-Methyl-2- [(3-methyl-2-thiazolidinylidene)-methyl]-5-phenylbenzoxazolium iodide A mixture of 2-(methylthio)-5-phenylbenzoxazole (14.5 g), 4,5-dihydro-2-methylthiazole (4.75 g), and methyl p-toluenesulphonate (28.0 g) was heated at 140C for four hours. Pyridine (50 ml) was added, and the mixture was refluxed for 40 minutes. The resulting solution was cooled and treated with water (100 ml), and the solid which separated was filtered off. The filtrate was treated with sodium iodide (30 g) and concentrated hydrochloric acid (50 ml). The precipitate was filtered off, washed with water, dried, warmed with toluene, and refiltered; it was finally crystallized from methanol to yield the product as pale yellow crystals, m.p. 262 – 264 C., 2346-00-1

The synthetic route of 2346-00-1 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; ILFORD Limited; EP324717; (1989); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

1849-73-6, 7-Chlorobenzo[d]thiazole-2(3H)-thione is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,1849-73-6

General procedure: A mixture of the 2-mercaptobenzo[d]thiazole (>1 g, 1 equiv) and sul-furyl chloride (10 equiv) was stirred at 20-25 C for 15 min. Next, H 2 O(2 equiv) was added and the mixture was stirred at 20-25 C for anadditional 3 h. A sample was taken, quenched with MeCN/H 2 O (2:1)and analyzed by HPLC. After completion of the reaction, the mixturewas diluted with MeCN (5 volumes) and slowly quenched with H 2 O(20 volumes). The product precipitated from the aqueous solution.The solid was collected and washed with H 2 O. Drying under vacuumafforded the pure product. In the case of the liquid product 2-chloro-benzo[d]thiazole (13), the reaction mixture was extracted withEtOAc. The organic layer was then dried and concentrated to affordthe product as an oil.

The synthetic route of 1849-73-6 has been constantly updated, and we look forward to future research findings.

Reference：
Article; Wimmer, Laurin; Parmentier, Michael; Riss, Bernard; Kapferer, Tobias; Ye, Chao; Li, Lei; Kim, Hongyong; Li, Jialiang; Synthesis; vol. 50; 10; (2018); p. 2027 – 2032;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

494769-34-5,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.494769-34-5,N-Boc-2-Amino-4-formylthiazole,as a common compound, the synthetic route is as follows.

(c) To a solution commercially available 3-iodopyridine (1.13 g, 5.5 mmol) in 15 mL of THF at 0 C was added a 2M solution of EtMgCl in THF (2.8 mL, 5.6 mmol) dropwise. After 1 h, added a solution of 42b (500 mg, 2.2 mmol) in 5 mL of THF. The reaction was allowed to warm to rt and stirred at for 1 hr. The reaction was quenched with water and extracted 2×EtOAC. The EtOAc extracts were dried over MgSO4, concentrated by rotary evaporator, and chromatographed on SiO2 using 50% hexanes in EtOAc then pure EtOAC to give 336 mg (50%) of 42c. MS found: (M+H)+=308.

494769-34-5 N-Boc-2-Amino-4-formylthiazole 23138686, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; Sheppeck, James; Dhar, T.G. Murali; Doweyko, Lidia; Gilmore, John; Weinstein, David; Xiao, Hai-Yun; Yang, Bingwei V.; Doweyko, Arthur M.; US2006/154973; (2006); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

31785-05-4, Ethyl 5-amino-2-methylthiazole-4-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 127; 5-Amino-2-methyl-thiazole-4-carboxylic acid (3-chloro-phenyl)-amide; The title compound was prepared as described in scheme 6. A) A solution of 5-amino-2-methyl-thiazole-4-carboxylic acid ethyl ester (prepared as described in example 105, step A) (0.10 g, 0.54 mmol) in THF (2.5 ml) was treated with dimethylaminopyridine (DMAP) and di-tert-butyl dicarbonate (Boc2O). The mixture was irradiated in a microwave oven at 100 C. for 10 min, then the solvent was evaporated. The residue was purified by flash chromatography (heptane/ethyl acetate) yielding 2-tert-butoxycarbonylamino-5-methyl-thiophene-3-carboxylic acid ethyl ester (0.11 g, 70%) as a yellow oil; B) 5-Amino-2-methyl-thiazole-4-carboxylic acid ethyl ester (0.40 g, 2.15 mmol) was dissolved in 20 ml dry THF. Di-tert.-butyl dicarbonate (0.526 g, 4.41 mmol) and 4-(N,N-dimethylamino)pyridine (0.036 g, 0.3 mmol) were added and the reaction mixture was stirred at 70 C. overnight. The solvent was evaporated, the residue taken up in 20 mL saturated sodium bicarbonate solution and extracted three times with ethyl acetate (30 mL each). The organic phases were pooled, dried with sodium sulfate and evaporated. The crude product was flash-chromatographed on silica gel with heptane/ethyl acetate 100:0?0:100 gradient to yield 5-tert-butoxycarbonylamino-2-methyl-thiazole-4-carboxylic acid ethyl ester as a light yellow solid (0.553 g, 90%)

31785-05-4, 31785-05-4 Ethyl 5-amino-2-methylthiazole-4-carboxylate 13329095, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; Buettelmann, Bernd; Ceccarelli, Simona Maria; Jaeschke, Georg; Kolczewski, Sabine; Porter, Richard Hugh Philip; Vieira, Eric; US2006/160857; (2006); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

1011-40-1, 2-Phenylthiazole-5-carbaldehyde is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

2-phenyl-thiazole-5-carbaldehyde 41 (Silberg A. et al. Chem. Ber. 1964, 97, 1684-1687) (3.1 g, 16.4 mmol) was treated with malonic acid (2.4 g, 23.0 mmol), pyridine (3 mL) and piperidine (0.16 mL) and the mixture was heated at reflux for 6 hours before being cooled to room temperature. The mixture was then poured into water (50 mL) with stirring. The resulted yellow solid 42 was filtered, washed with water and air-dried (2.45 g). 1H NMR (400 MHz, d6-DMSO) delta: 6.25 (d, J=15.7 Hz, 1H), 7.53 (m, 3H), 7.78 (d, J=15.7 Hz, 1H), 7.97 (m, 2H), 8.23 (s, 1H).

1011-40-1, 1011-40-1 2-Phenylthiazole-5-carbaldehyde 2763706, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; Tularik Inc.; US2004/97485; (2004); 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.1094070-77-5,tert-Butyl (2-bromothiazol-5-yl)carbamate,as a common compound, the synthetic route is as follows.

Example 42 Preparation of di(tert-butyl) 2-bromo-1,3-thiazol-5-ylimidodicarbonate To a tetrahydrofuran (THF) (200 mL) solution of (2-bromo-thiazol-5-yl)-carbamic acid tert-butyl ester (19.8 g, 70.9 mmol) at 0 C (ice bath) was added NaH (3.12 g, 78 mmol, 60% dispersion in mineral oil) in one portion. Gas evolution was observed. The reaction was stirred for 30 minutes. (Boc)2O (17.0 g, 78 mmol) was added in one portion. The reaction was stirred for 5 minutes. The reaction vessel was pulled from the cooling bath and the reaction allowed to stir for 30 more minutes. Water and ethyl acetate were added to the reaction mixture. The layers were separated and the aqueous layer was extracted ethyl acetate (2 X). The combined organic layers were dried over MgSO4, filtered, and concentrated. Silica gel column chromatography (20 to 50% ethyl acetate/hexanes) afforded the final product as a white solid (25.0 g, 93% yield): mp 87-89 C; 1H NMR (300 MHz, CDCl3) delta 7.24 (s, 1H), 1.48 (s, 18H); ESIMS m/z 379, 381 (M+1)., 1094070-77-5

As the paragraph descriping shows that 1094070-77-5 is playing an increasingly important role.

Reference：
Patent; Dow AgroSciences, LLC; Trullinger, Tony; Hunter, Ricky; Garizi, Negar; Yap, Maurice; Buysse, Ann; Pernich, Dan; Johnson, Timothy; Bryan, Kristy; Deamicis, Carl; Zhang, Yu; Niyaz, Noormohamed; McLeod, CaSandra; Ross, Ronald; Zhu, Yuanming; Johnson, Peter; Eckelbarger, Joseph; Parker, Marshall; EP2604268; (2015); B1;,
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.

General procedure: tert-butyl (2S,3R)-3-hydroxy-4-(isobutylamino)-1-phenylbutan-2-ylcarbamate (6) (31.0 g) in dichloromethane was added to a solution of benzothiazole-6-carboxylic acid (1.05 eq), triethylamine (1.5 eq) and HATU (2-(7-aza-1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate, 1.05 eq) in dichloromethane (500 mL). The reaction mixture was stirred at room temperature overnight. Water was added and the phases were separated. The organic phase was three times washed with a saturated aqueous Na2CO3 solution, brine, dried with MgSO4 and concentrated under reduced pressure. The residue was purified by column chromatography (eluent: dichloromethane dichloromethane / methanol 95:5) to afford compound 8 quantitative.

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

Reference：
Article; Jonckers, Tim H.M.; Rouan, Marie-Claude; Hache, Geerwin; Schepens, Wim; Hallenberger, Sabine; Baumeister, Judith; Sasaki, Jennifer C.; Bioorganic and Medicinal Chemistry Letters; vol. 22; 15; (2012); p. 4998 – 5002;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

1003-07-2, Isothiazol-3(2H)-one is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 8 Isothiazolone composition was prepared by blending 14 wt % of an isothiazolone mixture comprising 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one in a weight ratio of 3:1, 1 wt % of N,N’-dimethyl-3,3′-dithiodipropionamide, 1 wt % of N,N’-dimethyl-3-thiodipropionamide, 1 wt % of methyl-3-mercapto propionamide, and 83 wt % of organic solvent, as shown in the following table 8.

1003-07-2, 1003-07-2 Isothiazol-3(2H)-one 96917, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; Sunkyong Industries Co., Ltd.; US5919400; (1999); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica