Month: September 2020

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.93-85-6,2-Aminobenzo[d]thiazole-6-carboxylic acid,as a common compound, the synthetic route is as follows.

93-85-6, General procedure: In a flask charged with 50 mL of CH3CN was added2.5 mmol of compound 5 andappropriate benzothiazole derivatives (2a-r,1.5 eq.) and the reaction mixture was refluxed for 10-38 h until the completeconsumption of starting material as detected by TLC.After the completion of the reaction, the reactionmixture was treated with ice and the resulting solid was filtered and washedwith water (2 x 25 mL). The residue was purifiedby a silica gel column chromatography andwas eluted with dichloromethane: methanol (40:1) to afford correspondingproducts 6a-r in 49-82% of yields.

As the paragraph descriping shows that 93-85-6 is playing an increasingly important role.

Reference£º
Article; Mistry, Bhupendra M.; Patel, Rahul V.; Keum, Young-Soo; Kim, Doo Hwan; Bioorganic and Medicinal Chemistry Letters; vol. 25; 23; (2015); p. 5561 – 5565;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

78364-55-3,78364-55-3, 6-Fluoro-2-hydrazinylbenzo[d]thiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: 1-(6-Fluorobenzothiazol-2-yl)-3-methyl-4-(2-(substituted phenyl)hydrazono)pyrazol-5(4H)-ones 4a-e. General Procedure B. A solution of 6-fluoro-2-hydrazinobenzothiazole (2) (0.549 g, 0.003 mol) in glacial acetic acid (10 mL) was added to a solution of the appropriate ethyl 3-oxo-2-(2-(substituted phenyl)hydrazono)butanoate 3a-e (0.003 mol) in glacial acetic acid (10 mL). The mixture was heated at reflux temperature for 10-16 h, then cooled and allowed to stand overnight. The precipitated solid was collected by filtration, washed with water, dried and crystallized from ethanol to give compounds 4a-e.

78364-55-3 6-Fluoro-2-hydrazinylbenzo[d]thiazole 2049844, athiazole compound, is more and more widely used in various fields.

Reference£º
Article; Gabr, Moustafa T.; El-Gohary, Nadia S.; El-Bendary, Eman R.; El-Kerdawy, Mohamed M.; Ni, Nanting; Shaaban, Mona I.; Chinese Chemical Letters; vol. 26; 12; (2015); p. 1522 – 1528;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

1383816-29-2, rel-2-((1R,3r,5S)-3-((5-cyclopropyl-3-(2-(trifluoromethoxy)phenyl)isoxazol-4-yl)methoxy)-8-azabicyclo[3.2.1]octan-8-yl)-4-fluorobenzo[d]thiazole-6-carboxylic acid is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The previously described Example 1- lB, 2-(3-((5-cyclopropyl-3-(2- (trifluoromethoxy)phenyl)isoxazol-4-yl)methoxy)-8-azabicyclo[3.2.1]octan-8-yl)-4- fluorobenzo[d]thiazole-6-carboxylic acid (20 mg, 0.033 mmol), was suspended in methylene chloride (0.6 mL), cooled to 0 C and treated with Nu,Nu-diisopropylethylamine (aprox. 10 uL, 0.07 mmol) and oxalyl chloride (10 uL, 0.10 mmol). After 20 minutes the reaction was concentrated in vacuo to a reddish colored residue, suspended in THF (0.5 mL) and then treated with 10 N ammonium hydroxide. After 1 hr of stirring, the reaction was diluted with ethyl acetate (1 mL), and water washed (2 x 0.5 mL). The resulting organic extract were concentrated to dryness, re-diluted with MeOH (2 mL), and directly purified using mass-directed reverse phase HPLC, using gradient of 30 to 90 % acetonitrile/water, and 0.05 % TFA as modifier. All product fractions were cold vacuum concentrated and free-based using an SPE polymer support cartridge and MeOH (2 mL) mobilizing solvent (product SPE PLHC03 MP part no PL3540- C603). All resulting methanol effluent was concentrated to furnish the title compound as a white powder, 14 mg (70 %). MS m/z 603.1 (M + 1)., 1383816-29-2

The synthetic route of 1383816-29-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; IRM LLC; TULLY, David C.; RUCKER, Paul Vincent; ALPER, Phillip B.; MUTNICK, Daniel; CHIANELLI, Donatella; WO2012/87519; (2012); 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.78502-71-3,Ethyl 2-(bromomethyl)thiazole-4-carboxylate,as a common compound, the synthetic route is as follows.,78502-71-3

To a solution of 6-fluoro-5-methoxy-2-phenylindole (200 mg) in N,N-dimethylformamide (4.1 mL) was added sodium hydride (dispersed in liquid paraffin, minimum 55%, 54 mg) under cooling with ice, and the mixture was stirred at room temperature for 70 minutes. Then a solution of ethyl 2-bromomethylthiazole-4-carboxylate (249 mg) in N,N-dimethylformamide (0.2 mL) was added, and the mixture was stirred at 80 C. for 25 hours. The reaction mixture was allowed to cool to ambient temperature. A saturated aqueous ammonium chloride solution-water (2/1) were added to the reaction mixture and this resulting mixture was extracted with ethyl acetate. The organic layer was washed successively with water and saturated saline, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluting solvent: ethyl acetate-hexane) to obtain the title compound (125 mg).In addition, structural formula and spectrum data of the title compound are shown in Table 29

As the paragraph descriping shows that 78502-71-3 is playing an increasingly important role.

Reference£º
Patent; KISSEI PHARMACEUTICAL CO., LTD.; US2012/129890; (2012); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

944804-88-0, tert-Butyl 4-bromothiazol-2-ylcarbamate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

4-Methoxybenzyl chloride (2.72 mL, 20.09 mmol) was added to a solution of terEbutyl (4-bromothiazol- 2-yl)carbamate (5.10 g, 18.26 mmol) and CS2CO3 (11.90 g, 36.53 mmol) in DMF (40 mL) and the mixture was stirred at 80 C for 1 h. The reaction mixture was cooled to 25 C, quenched with water (100 mL), and extracted with EtOAc (3 x 300 mL). The organic extracts were dried over MgSCL, filtered, and concentrated under reduced pressure. The residue was purified by column chromatography (hexane: EtOAc; 1 :0 to 9.5:0.5) to afford the product (7.20 g, 99%) as a pale yellow wax. (0183) NMR (500 MHz, CDCL) (ppm) 7.36 – 7.31 (m, 2H), 6.85 – 6.81 (m, 2H), 6.81 (s, 1H), 5.21 (s, 2H), 3.78 (s, 3H), 1.52 (s, 9H); 13C NMR (126 MHz, CDCl3) (ppm) 161.9, 159.1, 153.0, 129.7, 129.6, 120.5, 113.8, 112.1, 84.1, 55.4, 49.7, 28.3; (0184) HRMS calcd for ( VJ hoBr^CkS [M+H]+ 401.0353, found 401.0359, 944804-88-0

944804-88-0 tert-Butyl 4-bromothiazol-2-ylcarbamate 45117837, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; MASARYKOVA UNIVERZITA; PARUCH, Kamil; CARBAIN, Benoit; HAVEL, Stepan; VSIANSKY, Vit; NIKULENKOV, Fedor; KREJCI, Lumir; (133 pag.)WO2019/201867; (2019); 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.161797-99-5,Ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate,as a common compound, the synthetic route is as follows.

a) Preparation of Ethyl 2-(3-formyl-4-hvdroxyphenyl)-4-methyl-5-thiazolecarboxylate[Compound of formula lO.Ogm of Ethyl 2-(4-hydroxyphenyl)-4-methyl-5-thiazole carboxylate, [Compound of formula II] and 5.86gm of hexamethylenetetramine was added to 100.0ml of trifluoroacetic acid. Reaction mixture was heated to reflux under stirring for 40 hr. Trifluoroacetic acid was distilled out at 80 +/- 3¡ãC. Residue obtained was cooled to 25¡ãC and slowly added 100 ml of water. Slurry formed was stirred for 2.0hr. Slurry of the product was filtered, washed and dried under vacuum to give 9.6 gm of titled compound., 161797-99-5

As the paragraph descriping shows that 161797-99-5 is playing an increasingly important role.

Reference£º
Patent; SANDOZ AG; LUTHRA, Parven, Kumar; KHAN, Rashid; SALUNKHE, Dadasaheb; NASIR ALI, Shafakat, Ali; WO2012/131590; (2012); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

5398-36-7, Ethyl 2-aminothiazole-4-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,5398-36-7

To 40 ml of an aqueous solution of 4.00 g (23.2 mmol) of ethyl 2-aminothiazole-4-carboxylate was added 1.86 g (46.5 mmol) of sodium hydroxide, followed by stirring at room temperature for 5 hours. The reaction liquid was adjusted to pH 1 by the addition of concentrated hydrochloric acid, and the precipitated crystals were collected by filtration to prepare 2.84 g (yield 85%) of a target compound. 1H-NMR (CDCl3, ppm) delta 7.18 (2H, broad-s), 7.38 (1H, s). The proton of the carboxylic acid was not detected.

5398-36-7 Ethyl 2-aminothiazole-4-carboxylate 73216, athiazole compound, is more and more widely used in various fields.

Reference£º
Patent; Mitsui Chemicals Agro, Inc.; EP2319830; (2011); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

1452-16-0, 2-Cyanothiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a stirred solution of thiazole-2-carbonitrile (1.5 g, 14 mmol) in 5 mL of dry MeOH was added dropwise a solution of sodium methoxide (0.74 g, 14 mmol) in 10 mL of dry methanol. The reaction mixture was stirred at room temperature until the disappearance of starting material monitored by LC/MS. After that, ammonium chloride (1.5 g, 28 mmol) was added in one portion and the reaction mixture was stirred overnight. The undissolved material was removed by filtration and the filtrate was concentrated to afford thiazole-2-carboxamidine hydrochloride (Compound A) as a grey solid which was used directly in the next step without further purification. MS: calc’d 128 (MH+), measured 128 (MH+).

1452-16-0, The synthetic route of 1452-16-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; HOFFMANN-LA ROCHE INC.; Guo, Lei; Hu, Taishan; Hu, Yimin; Kocer, Buelent; Kou, Buyu; Li, Gangqin; Lin, Xianfeng; Liu, Haixia; Shen, Hong; Shi, Houguang; Wu, Guolong; Zhang, Zhisen; Zhou, Mingwei; Zhu, Wei; US2014/343032; (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.63788-62-5,2-Acetylamino-4-methylthiazole-5-carboxylic acid,as a common compound, the synthetic route is as follows.

63788-62-5, A mixture of 10j (0.23g, 1.14mmol), 7 (0.23g, 1.14mmol), and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC¡¤HCl) (0.26g, 1.37mmol) in dimethylformamide (3mL) was stirred at room temperature for 15h. The reaction mixture was then allowed to heat at 100C for 3h and was evaporated in vacuo. The residue was purified using silica gel column chromatography (methanol/chloroform) to yield 13 (69.0mg, 17%) as a yellow oil.

As the paragraph descriping shows that 63788-62-5 is playing an increasingly important role.

Reference£º
Article; Oka, Yusuke; Yabuuchi, Tetsuya; Oi, Takahiro; Kuroda, Shoichi; Fujii, Yasuyuki; Ohtake, Hidenori; Inoue, Tomoyuki; Wakahara, Shunichi; Kimura, Kayo; Fujita, Kiyoko; Endo, Mayumi; Taguchi, Kyoko; Sekiguchi, Yoshinori; Bioorganic and Medicinal Chemistry; vol. 21; 24; (2013); p. 7578 – 7583;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

7305-71-7, 2-Amino-5-methylthiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

7305-71-7, Example 21 (E)-2-(3-Chloro-4-methanesulfonyl-phenyl)-2-cyclopentyloxyimino-N-(5-methyl-thiazol-2-yl)-acetamide (E)-(3-Chloro-4-methanesulfonyl-phenyl)-cyclopentyloxyimino-acetic acid (prepared as in Example 1, 84 mg, 0.24 mmol), 5-methyl-thiazol-2-ylamine (28 mg, 0.24 mmol) and N,N-diisopropylethylamine (127 muL, 0.73 mmol) were combined in methylene chloride (2 mL) and cooled in an ice bath. O-(7-Azabenzotriazole-1-yl)-N,N,N’N’-tetramethyluronium hexafluorophosphate (92 mg, 0.24 mmol) was added and the ice bath was removed. After stirring 2 h, the reaction mixture was evaporated in vacuo. The residue was treated with saturated aqueous sodium bicarbonate solution (1 mL) and extracted with chloroform (2*3 mL). The combined organic phases were dried over sodium sulfate and evaporated in vacuo. The residue was purified by flash column chromatography (Merck silica gel 60, 40-63 mum; 40percent ethyl acetate/hexanes) to afford (E)-2-(3-chloro-4-methanesulfonyl-phenyl)-2-cyclopentyloxyimino-N-(5-methyl-thiazol-2-yl)-acetamide (74 mg, 69percent) as a white solid after lyophilization from aqueous acetonitrile: LC-MS (ESI) m/e calcd for C18H20ClN3O4S2 [M+] 441.06, found 442 [M+H+]; H1-NMR (400 MHz, CDCl3) delta ppm 1.66 (m, 4 H, 2*CH2), 1.89 (m, 4 H, 2*CH2), 2.45 (d, J=1.2 Hz, 3 H, ArCH3), 3.31 (s, 3 H, SO2CH3), 4.93 (m, 1 H, OCH), 7.15 (brq, 1 H, Ar), 7.59 (dd, Jo=8.2, Jm=1.5 Hz, 1 H, Ar), 7.70 (d, Jm=1.5 Hz, 1 H, Ar), 8.21 (d, Jo=8.2 Hz, 1 H, Ar), 10.03 (s, 1 H, NH).

The synthetic route of 7305-71-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Berthel, Steven Joseph; Kester, Robert Francis; Murphy, Douglas Eric; Prins, Thomas Jay; Ruebsam, Frank; Tran, Chinh Viet; Vourloumis, Dionisios; US2008/146625; (2008); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica