Heterocyclic Building Blocks-Thiazole

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.64987-16-2,Methyl 2-(2-aminothiazol-4-yl)acetate,as a common compound, the synthetic route is as follows.,64987-16-2

Step: 2; Preparation of methyl (2-{[(pyridin-3-ylmethoxy)carbonyl]amino}-l,3-thiazol-4- yl)acetate; To a suspension of l,l’-carbonylbis(lH-imidazole) (2.43g, 15 mmol) in THF (12 mL) at 0-5 0C was added pyridine-3 -methanol (1.63 g, 15 mmol) in THF (5 mL), and stirred at room temperature for 5 hours. The above reaction mixture was added to a solution of methyl (2-amino-l,3-thiazol-4-yl)acetate (2.58 g, 15 mmol), DBU (2.28 g, 15mmol) and triethylamine (1.51 g, 15 mmol) in THF (24 ml) and stirred at room temperature, overnight. The THF was removed under reduced pressure and the crude compound was taken in dichloromethane (100 ml), washed with water, the organic layer dried over anhydrous Na2Stheta4, concentrated and purified by silica gel column chromatography using EtOAc/hexanes (4:6) to afford the title compound as a pale yellow colored solid (1 g, 23% yield).

The synthetic route of 64987-16-2 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; ORCHID RESEARCH LABORATORIES LIMITED; WO2007/17728; (2007); A2;,
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

To the stirring solution of 6-bromo-1 ,3-benzothiazol-2-amine (5 g, 21.825 mmol) in 1 ,4-Dioxane (80 mL) was added potassium acetate (3 g, 32.737 mmol) and 4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl- 1 ,3,2-dioxaborolan-2-yl)-1 ,3,2-dioxaborolane (8.3 g, 32.737 mmol). The reaction mixture was degassed with nitrogen for 20 min followed by addition of Pd(PPh3)2Cl2 (850 mg, 1 .0912 mmol). The reaction mixture was again degassed for 10 min and then refluxed at 100C for overnight. The reaction mass was then diluted with water and extracted with dichloromethane (3 x 100 mL). The combined organic layers were then dried over sodium sulphate and concentrated under reduced pressure followed by column chromatography to obtain the title compound as solid (5 g). (0645) H NMR (400 MHz, CDCI3: delta 1 .35 (s, 12H), 5.45 (br. s, 2H), 7.53 (d, 1 H), 7.75 (d, 1 H), 8.06 (s, 1 H) LC/MS (method E) m/z: 277 [M + H]+, Rt = 0.96 min., 15864-32-1

As the paragraph descriping shows that 15864-32-1 is playing an increasingly important role.

Reference：
Patent; SYNGENTA PARTICIPATIONS AG; PITTERNA, Thomas; JEANGUENAT, Andre; BENFATTI, Fides; RAWAL, Girish; (89 pag.)WO2018/15328; (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.2942-14-5,5-Methoxybenzo[d]thiazole,as a common compound, the synthetic route is as follows.

Intermediate 25:[0144] A mixture of intermediate 24 (272 mg, 1.65 mmol) and hydroiodic acid (45%, 2 mL) was heated to reflux for 5 h. The mixture was diluted with water and filtered. The filtrate was neutralized and the solids were filtered, washed with water, and combined to give benzo[c ]thiazol-5-ol (intermediate 25) (206 mg, 83%). HPLC: 99%, RT 2.038 min. MS (ESI) m/z 152.1 [M + H]+., 2942-14-5

2942-14-5 5-Methoxybenzo[d]thiazole 12422200, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL; JIN, Jian; ROTH, Bryan; FRYE, Stephen; WO2012/3418; (2012); A2;,
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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

Oxalyl chloride (42 mu, 0.47 mmol, 1.7 eq) was added dropwise to a mixture of benzo[d]thiazole-6-carboxylic acid (50 mg, 0.28 mmol, 1.0 eq) and DMF (2 mu, 0.03 mmol, 0.1 eq) in DCM (0.7 mL). The reaction was stirred at rt for 2 hrs. The reaction was concentrated under reduced pressure to give crude benzo[d]thiazole-6-carbonyl chloride as a yellow residue that was used without further purification., 3622-35-3

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

Reference：
Patent; ENANTA PHARMACEUTICALS INC; GRANGER, Brett; WANG, Gouqiang; SHEN, Ruichao; MA, Jun; XING, Xuechao; HE, Jing; HE, Yong; LONG, Jiang; WANG, Bin; OR, Yat, Sun; (108 pag.)WO2018/218044; (2018); A2;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

15448-99-4, 2-Methylbenzo[d]isothiazol-3(2H)-one 1,1-dioxide is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

B. 2-methoxyethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide To a solution of 3.0 g. (0.015 mole) of N-methylsaccharin and 2.3 g. (0.015 mole) of 2-methoxyethyl chloroacetate in 15 ml. of dimethylsulfoxide at 40 C. was added 810 mg. (0.033 mole) of sodium hydride over a 2 hour period. The resulting reaction mixture was stirred for 2 hours at 40-50 C. and was then quenched in 5% hydrochloric acid solution. The resulting suspension was extracted with methylene chloride (2*100 ml.) and the organic layers separated, combined and washed with water (50 ml.) and a brine solution (50 ml). The organic layer was dried over magnesium sulfate and concentrated to an oil, 4.1 g. The product was purified by dissolution of the residue in 5 ml. of acetone and addition of the acetone slowly to 125 ml. of 0.25 N hydrochloric acid. The suspension was allowed to stir for several hours, and was then filtered and dried 2.6 g. (55%). The product is indistinguishable from that reported in U.S. Patent Application Ser. No. 191,716, filed Sept. 29, 1980.

15448-99-4, As the paragraph descriping shows that 15448-99-4 is playing an increasingly important role.

Reference：
Patent; Pfizer Inc.; US4376204; (1983); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

96929-05-4, Ethyl 2-(((tert-butoxycarbonyl)amino)methyl)thiazole-4-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,96929-05-4

Aqueous ammonia (28% w/w, 3,1 mL, 40 mmol) was added to a solution of ethyl 2-(((tert-butoxycarbonyl)amino)methyl)thiazole-4-carboxylate2 3 (381 mg, 1.33 mmol) in methanol (1,3 mL). After 16 h at 45C, the reaction mixture was concentrated affording the title compound as a brown oil (315mg, 92%) which was used directn y in the next step. 1H NMR (400 MHz, Methanol-d4) delta 8.10 (s, 1H), 4.49 (s, 2H), 1.45 (s, 9H).

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; Iyer, Shankar S.; Gensollen, Thomas; Gandhi, Amit; Oh, Sungwhan F.; Neves, Joana F.; Collin, Frederic; Lavin, Richard; Serra, Carme; Glickman, Jonathan; de Silva, Punyanganie S.A.; Sartor, R. Balfour; Besra, Gurdyal; Hauser, Russell; Maxwell, Anthony; Llebaria, Amadeu; Blumberg, Richard S.; Cell; vol. 173; 5; (2018); p. 1123 – 11,1134;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

824403-26-1, 5-Bromo-2-chlorobenzo[d]thiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

824403-26-1, Step 1 : 5-Bromo-2-cyclopropylbenzo[ |thiazole [00332] To a solution of 5-bromo-2-chlorobenzo[d]thiazole (0.50 g, 2.02 mmol) and Pd(PPh3)4 (70 mg, 0.06 mmol) in THF (5 mL) was added dropwise cyclopropyl zinc bromide (0.5 M in THF, 4.0 mL, 2.02 mmol), over 15 min. The reaction mixture heated to 60 C under N2 for 1 8 h. The reaction mixture was cooled to 0 C and quenched with saturated sodium hydrogen carbonate solution (1 0 mL). The corresponding solution was partitioned with ethyl acetate (50 mL), washed with saturated sodium hydrogen carbonate solution (30 mL), dried over MgS04 and concentrated to give an orange solid. The crude reaction material was purified by flash silica chromatography (gradient elution /’-hex to 50% EtOAc in /-hex) to give the title compound as a pale yellow solid (0.45 g, 88%). LCMS (ES+) consistent with target (M+H)+.

824403-26-1 5-Bromo-2-chlorobenzo[d]thiazole 20251269, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; CHDI FOUNDATION, INC.; DOMINGUEZ, Celia; MUNOZ-SAN JUAN, Ignacio; MAILLARD, Michel; RAPHY, Gilles; HAUGHAN, Alan, F.; LUCKHURST, Christopher, A.; JARVIS, Rebecca, E.; BURLI, Roland, W.; WISHART, Grant; HUGHES, Samantha, J.; ALLEN, Daniel, R.; PENROSE, Stephen, D.; BRECCIA, Perla; WO2014/159224; (2014); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

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

Boc-anhydride (1 .53 mL, 6.6 mmol) was added to methyl 2-(2-aminothiazol-4-yl)acetate (1 .08 g, 6.28 mmol), N,N-diisopropylethylamine (1 .21 mL, 6.91 mmol) and DMAP (8 mg, 0.06 mmol) in THF (20 mL) at 0 C. The reaction mixture was warmed to room temperature and stirred overnight, then heated to 90 C. After 2 h the reaction was concentrated, and the residue was purified on silica gel, eluting with a 0%-100% EtOAc-hexanes gradient to give the title compound (1 .35 g, 79%). 1H NMR (400 MHz, CD3SOCD3) delta 1 .44 (s, 9 H), 1 .96 (s, 2 H), 3.62 (s, 3 H), 6.89 (s, 1 H), 1 1 .39 (s, 1 H); LC-MS (LC-ES) M-H = 271 ., 64987-16-2

The synthetic route of 64987-16-2 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; GLAXOSMITHKLINE INTELLECTUAL PROPERTY DEVELOPMENT LIMITED; DEATON, David Norman; GUO, Yu; HANCOCK, Ashley Paul; SCHULTE, Christie; SHEARER, Barry George; SMITH, Emilie Despagnet; STEWART, Eugene L.; THOMSON, Stephen Andrew; (556 pag.)WO2018/69863; (2018); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

40283-41-8, 2-Aminothiazole-4-carboxylic acid is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

2-Aminothiazole-4~carboxylic acid (1A) (0.5 g, 3.47 mmol) and 4-(3-Amino- pyhdin~4-yl)-piperazine-1-carboxylic acid tert-butyl ester (1B) (Ig5 3.59) were combined with anhydrous dmethylformamide (15 mL) and N, N-diisopropylethylamine (1 mL, 5.5 mmol), before adding N-[(dimethylamino)-1H-1 .2l3-triazolo[4.5-jb]pyridine- 1 -yImethyfene]-A/-methylmethanaminium Hexaffuorophosphate N-oxle (HATU) (2 g, (5.3 mmol). The reaction was stirred at room temperature for 16 hours, then stripped of solvent and stirred with a mixture (25:75 v/v) of 1 M aqueous KOH and saturated aqueous NaHCtheta3. The sticky brown residue was filtered, then rinsed with acetone to provide compound 1C (700 mg, 1.73 mmol, 50%) as an off-white solid. HPLC-MS tR ~ 1.076 min (UV 254). Mass calculated for formula C18H24N6O3S 404.49; observed IvIH+ (LCMS) 405.1 (m/z).

40283-41-8, The synthetic route of 40283-41-8 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; SCHERING CORPORATION; WO2009/58739; (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.15448-99-4,2-Methylbenzo[d]isothiazol-3(2H)-one 1,1-dioxide,as a common compound, the synthetic route is as follows.

15448-99-4, B. 2-methoxyethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide To a solution of 3.0 g. (0.015 mole) of N-methylsaccharin and 2.3 g. (0.015 mole) of 2-methoxyethyl chloroacetate in 15 ml. of dimethylsulfoxide at 40 C. was added 810 mg. (0.033 mole) of sodium hydride over a 2 hour period. The resulting reaction mixture was stirred for 2 hours at 40-50 C. and was then quenched in 5% hydrochloric acid solution. The resulting suspension was extracted with methylene chloride (2*100 ml.) and the organic layers separated, combined and washed with water (50 ml.) and a brine solution (50 ml). The organic layer was dried over magnesium sulfate and concentrated to an oil, 4.1 g. The product was purified by dissolution of the residue in 5 ml. of acetone and addition of the acetone slowly to 125 ml. of 0.25N hydrochloric acid. The suspension was allowed to stir for several hours, and was then filtered and dried 2.6 g. (55%). The product is indistinguishable from that reported in U.S. patent application Ser. No. 191,716, filed Sept. 29, 1980.

The synthetic route of 15448-99-4 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Pfizer Inc.; US4483982; (1984); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica