Heterocyclic Building Blocks-Thiazole

288-47-1, Thiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,288-47-1

The 5-amino-2-tolyl 2-thiazolylmethyl ether used as a starting material was obtained as follows: A solution of thiazole (5 g) in diethyl ether (50 ml) was added dropwise to n-butyl lithium (1.6M in hexane, 30 ml) which had been cooled to -70 C. and the mixture was stirred at -70 C. for 3 hours. Formaldehyde gas ?obtained by heating paraformaldehyde (5.05 g) to 140 C.! was led into the reaction mixture and the resultant mixture was allowed to warm to ambient temperature and was stirred for 16 hours. The mixture was partitioned between diethyl ether and 4M aqueous hydrochloric acid. The aqueous layer was basified by adding aqueous potassium hydroxide solution and extracted with a mixture of ethyl acetate (80 ml), chloroform (20 ml) and ethanol (20 ml). The extract was evaporated to give 2-thiazolylmethanol (.4.4 g), m.p. 46-47 C.;

The synthetic route of 288-47-1 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; Zeneca Limited; US5821246; (1998); A;,
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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

EXAMPLE 3 2-Methoxyethyl 4-hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide (I; Y=OCH2 CH2 OCH3) In a manner similar to Example 1B, 1.0 g. of 91% sodium hydride was added over a period of one hour to a solution of 3.0 g. (0.015 mole) of N-methylsaccharin and 2.6 g. (0.017 mole) of 2-methoxyethyl chloroacetate in 15 ml. of dimethylformamide at 35 C. The exothermic reaction (55 C.) was allowed to stir for 2 hours after the addition was complete, and was then quenched in 5% hydrochloric acid solution and the product extracted with methylene chloride. The residue, remaining after the solvent was removed, was dissolved in 10 ml. of warm dimethylformamide and added to 100 ml. of 2% hydrochloric acid. The cooled suspension was stirred for 30 minutes and filtered. Drying of the filtered material gave 1.12 g. (24%) of the product identical with that prepared in Example 1B., 15448-99-4

15448-99-4 2-Methylbenzo[d]isothiazol-3(2H)-one 1,1-dioxide 27290, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; Pfizer Inc.; US4376204; (1983); A;; ; Patent; Pfizer Inc.; US4483982; (1984); A;,
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Thiazole | chemical compound | Britannica

1123-55-3, Benzo[d]thiazol-7-amine is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: 6-Bromo-4-chloroquinoline (1.0 equiv.) and 3,4,5-trimethoxyaniline (1.1 equiv.) were suspended in ethanol (10 mL) and refluxed for 18 h. The crude mixture was purified by flash chromatography using EtOAc:hexane followed by 1-5% methanol in EtOAc, solvent was removed under reduced pressure to afford the desired product (1, 8-11, 13-31, and 33-43)., 1123-55-3

1123-55-3 Benzo[d]thiazol-7-amine 12479792, athiazole compound, is more and more widely used in various fields.

Reference：
Article; Asquith, Christopher R.M.; Bennett, James M.; Su, Lianyong; Laitinen, Tuomo; Elkins, Jonathan M.; Pickett, Julie E.; Wells, Carrow I.; Li, Zengbiao; Willson, Timothy M.; Zuercher, William J.; Molecules; vol. 24; 22; (2019);,
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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., 19989-67-4

19989-67-4 Benzo[d]thiazole-6-carbaldehyde 15089709, athiazole compound, is more and more widely used in various fields.

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

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.943-03-3,6-Methoxybenzo[d]thiazole-2-carbonitrile,as a common compound, the synthetic route is as follows.

943-03-3, Pyridine hydrochloride (1.8 g, 15.57 mmol) was added to a 15 mL pressure tube and heated to 200 °C until completely dissolved.Then 2-cyano-6-methoxybenzothiazole (100 mg, 0.53 mmol) was added, followed by a reaction at 200 ° C for 2 h.The above reaction solution was adjusted to pH 7 with a 10percent NaHCO3 solution under ice bath. With EtOAc (15mL × 5) mixture was extracted, the organic layer was dried over anhydrous Na2SO4 and concentrated, the solvent was removed under reduced pressure.The crude product was purified by silica gel column chromatography (silica, hexane:EtOAc, 8:1 v/v).Obtained 50 mg of a white solid.The yield was 54.0percent.

943-03-3 6-Methoxybenzo[d]thiazole-2-carbonitrile 342109, athiazole compound, is more and more widely used in various fields.

Reference：
Patent; Xuzhou Medical University; Zhang Ling; Sheng Zhijia; Xue Yunsheng; Zheng Youguang; Zhang Yiran; Kai Xiaoning; (34 pag.)CN109293653; (2019); A;,
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Thiazole | chemical compound | Britannica

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.209459-11-0,Methyl 2-aminobenzo[d]thiazole-7-carboxylate,as a common compound, the synthetic route is as follows.

Isoamyl nitrite (22.0 mmol) is added to a solution of 2-amino-benzothiazole-7-carboxylic acid methyl ester (10.1 mmol) in THF (29 mL). The mixture is heated to reflux for 4h, the solvents are removed in vacuo and the residue is purified by flash chromatography (gradient: heptane to EtOAc/heptane 4/6) to give the desired product. LC-MS: tR = 0.85 min; [M+H]+ = 194.0., 209459-11-0

As the paragraph descriping shows that 209459-11-0 is playing an increasingly important role.

Reference：
Patent; ACTELION PHARMACEUTICALS LTD; WO2008/81399; (2008); A2;,
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Thiazole | chemical compound | Britannica

30132-15-1, 2-(2-Aminobenzo[d]thiazol-6-yl)acetic acid is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE 8; 3-(2-Fluorophenyl)-4-(2-(isopropylamino)benzo[d]thiazol-6-yl)-lH-pyrazol-5-oI; 1. Methyl 2-(2-aminobenzo[d]thiazol-6-yl)acetate[00175] A mixture of 2-(2-aminobenzo[d]thiazol-6-yl)acetic acid (95%, 10.0 g, 45.6 mmol), methanol (50 mL), 4 N HCl/l,4-dioxane (12.0 mL, 48.0 mmol) in 1,4- dioxane (30 mL) was heated at 750C for 9 hr and then concentrated under vacuum. The residue was suspended into water (50 mL) and basified to pH 9 with IN NaOH solution. The title compound (8.19 g, 81% yield) was collected as a pale solid by suction filtration and dried under vacuum at 5O0C.

30132-15-1, The synthetic route of 30132-15-1 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; BRISTOL-MYERS SQUIBB COMPANY; WO2007/16392; (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 25 mL of a 10 M potassium hydroxide solution, 5 g of 2-amino-6-bromo-benzothiazole was added, and then a mixed solution of 5 mL of ethylene glycol was added thereto, and the mixture was stirred at 125 C for 2 hours.Obtaining 2-amino-5-bromobenzenethiol;

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

Reference：
Patent; Nanjing Zhongpengliankang Medical Treatment Technology Co., Ltd.; Liu Yuanhao; (20 pag.)CN108239100; (2018); 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.824403-26-1,5-Bromo-2-chlorobenzo[d]thiazole,as a common compound, the synthetic route is as follows.

824403-26-1, Intermediate 1: Step b3-((5-Bromobenzo [d] thiazol-2-yl)amino)-4-methoxybenzonitrileCommercially available 5-bromo-2-chlorobenzo[d]thiazole (2.0 g, 8.05 mmol) in phenol (4 g) was treated with 3-amino-4-methoxybenzonitrile (1.31 g, 8.85 mmol, intermediate 1, step a). The mixture was heated to 100 C overnight. The resulting red-brown solution was cooled to room temperature. To the solid formed upon cooling was added EtOAc and saturated aqueous NaHCC solution. The mixture was stirred for 1 h to dissolve the solid. The aqueous layer was separated out. The organic layer was washed with IN NaOH solution for 5 times to get rid of phenol. The organic layer was dried (MgS04) and concentrated in vacuo to obtain the title compound as a solid.

The synthetic route of 824403-26-1 has been constantly updated, and we look forward to future research findings.

Reference：
Patent; JANSSEN PHARMACEUTICA NV; JACKSON, Paul, Francis; MAHAROOF, Umar, S.M.; LEONARD, Kristi, Anne; BAXTER, Ellen; TOUNGE, Brett, Andrew; HAWKINS, Michael; WO2012/162463; (2012); 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

64987-16-2, A solution of methyl 2-(2-aminothiazol-4-yl)acetate (3.56 g, 20.7 mmol) and DMAP (0.25 g, 2.07 mmol) in pyridine (16.74 ml_, 207 mmol) was cooled to 0 C whereupon methanesulfonyl chloride (1.61 ml_, 20.70 mmol) was added dropwise. The yellow solution was allowed to warm to RT and stirred for 1 hr then added to 1 M HCI (aq, 228 ml.) and stirred for 30 min. The resulting precipitate was then filtered and washed with Et20 (10 ml.) to afford a yellow solid. This was slurried in Et20 (20 ml.) and filtered to afford methyl 2-(2-(methylsulfonamido)thiazol-4-yl)acetate (3.56 g, 13.94 mmol, 67 % yield) as a colourless solid; Rt 0.83 min (HPLC acidic); m/z 251 (M+H)+ (ES+); 249 (M-H)- (ES-); 1H NMR (400 MHz, DMSO-d6) d 12.47 (s, 1 H), 6.60 (s, 1 H), 3.67 (d, J = 0.9 Hz, 2H), 3.66 (s, 3H), 2.90 (s, 3H).

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

Reference：
Patent; STEP PHARMA S.A.S.; QUDDUS, Abdul; NOVAK, Andrew; COUSIN, David; CHATZOPOULOU, Elli; BLACKHAM, Emma; JONES, Geraint; THOMAS, Jennifer; WRIGGLESWORTH, Joseph; DUFFY, Lorna; BIRCH, Louise; GEORGE, Pascal; AHMED, Saleh; (277 pag.)WO2019/106156; (2019); A1;,
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Thiazole | chemical compound | Britannica