Day: August 17, 2020

10200-59-6, 2-Thiazolecarboxaldehyde is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Thiazole-2-carbaldehyde (301 mg, 2.66 mmol) was dissolved in methanol (15 mL) at 0 ¡ã C,Sodium borohydride (151 mg, 3.99 mmol) was added to the system and reacted for 2 h. The reaction solution was poured into water (10 mL)The solvent was spin-dried, extracted with ethyl acetate (15 mL ¡Á 3), washed with saturated brine (15 mL), dried over anhydrous sodium sulfate,The solvent was removed and the residue was subjected to column chromatography (eluent:PE / EtOAc (v / v) = 5/1) to give 285 mg of a pale yellow oil, yield: 93percent.

As the paragraph descriping shows that 10200-59-6 is playing an increasingly important role.

Reference£º
Patent; Guangdong Dongyangguang Pharmaceutical Co., Ltd.; Liu Bing; Bai Shun; Zhou Youbo; Yang Tiping; He Wei; Zhang Yingjun; Zheng Changchun; (103 pag.)CN106749268; (2017); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

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: 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.

As the paragraph descriping shows that 78364-55-3 is playing an increasingly important role.

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

22900-83-0, Ethyl 2-bromo-4-methylthiazole-5-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A mixture of 4-aminothiophenol (1.25 g, 10.0 mmol), ethyl 2-bromo-4-methylthiazole-5-carboxylate (2.75 g, 11.0 mmol) and potassium carbonate (1.52 g,11.0 mmol) in acetonitrile (10 mL) was heated to 80 ¡ãC and stirred for 20 hours under an N2 atmosphere. The reaction mixture was then cooled to rt. The resulting mixture was filtered and the filtrate was concentrated in vacuo. The residue was purified by silica gel column chromatography (PE/EtOAc (v/v) = 10/1) to give the title compound as a white solid (1.0 g,34.0percent). The compound was characterized by the following spectroscopic data:LC-MS (ESI, pos. ion) m/z: 295.1 [M + H] and?H NMR(400 MHz, CDC13) (ppm): 7.46 (d, J = 8.4 Hz, 2H), 6.77 (d, J = 8.4 Hz, 2H), 4.25 (q, J 7.2 Hz, 2H), 2.67 (s, 3H), 1.30 (d, J 7.2 Hz, 3H).

As the paragraph descriping shows that 22900-83-0 is playing an increasingly important role.

Reference£º
Patent; SUNSHINE LAKE PHARMA CO., LTD.; ZHANG, Yingjun; JIN, Chuanfei; CHENG, Changchung; WO2015/169180; (2015); 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.182344-57-6,4-Bromo-2-chlorobenzo[d]thiazole,as a common compound, the synthetic route is as follows.

EXAMPLE 183 (+)-(4aR)-(10bR)-4-methyl-8-(4-bromo-2-benzothiazolylthio)-10b-methyl-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-one A 15 mL round bottom flask was charged with (+)-(4aR)-(10bR)-4-methyl-8-mercapto-10b-methyl-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-one (100 mg, 0.38 mmol), potassium carbonate (158 mg, 1.14 mmol), 2-chloro-4-bromobenzothiazole (114 mg, 0.46 mmol) and 1 mL of anhydrous dimethylformamide, fitted with a reflux condenser, and the stirred mixture was heated at 60, under nitrogen, for 18 h. The mixture was cooled, diluted with ethyl acetate (75 mL) and washed with brine (2*25 mL). The combined organic extracts were dried over sodium sulfate, concentrated, and purified by silica gel chromatography (ethyl acetate eluent) to give 142 mg (79%) of the title compound as an off white solid. mp 206-210. FDMS: m/e=474. alpha[D]589 =+56.25 (c=0.59, chloroform).

182344-57-6 4-Bromo-2-chlorobenzo[d]thiazole 2049865, athiazole compound, is more and more widely used in various.

Reference£º
Patent; Eli Lilly and Company; US5550134; (1996); A;; ; Patent; ELi Lilly and Company; US5629007; (1997); 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.51640-36-9,2-Chlorothiazole-5-carbonitrile,as a common compound, the synthetic route is as follows.

To a solution of Example 1A (1.18 g, 7.75 mmol) in N,N-dimethylformamide (50 mL) was added potassium carbonate (1.1 g, 7.96 mmol), 2-chlorothiazole-5-carbonitrile (CAS 51640-36-9, 1.12 g, 7.75 mmol) and then the reaction was stirred at room temperature overnight. The reaction mixture was diluted with ethyl acetate (100 mL) and washed with water (3¡Á50 mL) and brine (50 mL). The organics were dried over magnesium sulfate, filtered, and evaporated. The product was purified via silica-gel column chromatography using dichloromethane as the eluent. The title compound was obtained as white solid (2.0 g), 1H NMR (300 MHz, CDCl3) delta ppm 7.76 (s, 1H) 7.12-7.23 (m, 2 H) 6.87-7.00 (m, 2 H) 4.44-4.65 (heptet, J=6.25 Hz, 1 H) 1.36 (d, J=6.25 Hz, 6 H), MS (DCI): m/z 261 (M+H)+.

51640-36-9 2-Chlorothiazole-5-carbonitrile 1485222, athiazole compound, is more and more widely used in various.

Reference£º
Patent; Gu, Yu Gui; Weitzberg, Moshe; Xu, Xiangdong; Clark, Richard F.; Zhang, Tianyuan; Li, Qun; Hansen, Todd M.; Sham, Hing; Beutel, Bruce A.; Camp, Heidi S.; Wang, Xiaojun; US2007/225332; (2007); A1;,
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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.20949-84-2,4-Formyl-2-methylthiazole,as a common compound, the synthetic route is as follows.

Sodium bicarbonate (6.6 g, 78.7 mmol) was added to 2-methylthiazole-4-carbaldehyde (5.0 g, 39.4 mmol), S-methylisothiourea sulfate (8.3 g, 59.1 mmol) and ethyl acetoacetate (5.12 g, 39.4 mmol) of N, N-dimethylformyl (60 mL). After the reaction mixture was stirred at 70 C for 3 hours, it was cooled to room temperature. Water (500 mL) was added, and a yellow solid precipitated, filtered, and the filter cake was washed with water (200 mL) and dried under vacuum to obtain compound 82-f (3.5 g, yield: 29%).

As the paragraph descriping shows that 20949-84-2 is playing an increasingly important role.

Reference£º
Patent; Shanghai Zaiji Pharmaceutical Technology Co., Ltd.; Wang Yuguang; Zhang Nong; Wu Tianzhi; Wu Xinliang; (132 pag.)CN110872297; (2020); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

173979-01-6, 4-(Tributylstannyl)thiazole is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

2-(l-(phenylsulfonyl)-5-(l , 4-dioxaspiro[4.5]decan-8-yl)-lH-pyrrolo[2, 3- b] pyridin-3-yl)thiazole (IIb-87) – an alternative method of preparation(IXb-23) (IIb-87)Iodide (IXb-23) (100 mg, 0.19 mmol) and 2-(tributylstannyl)thiazole (107 mg, 0.29 mmol), tri-O-tolylphosphine (7 mg, 0.02 mmol), dichlorobis(acetonitrile)palladium(II) (3 mg, 0.01 mmol) and toluene (3 mL) were reacted for 5 h at 120 0C (oil bath) in a sealed reaction vessel using the general procedure B for the Stille reaction. The reaction mixture was filtered, concentrated and purified by LCMS (column LUNA 10 mu C 18(2) 00G-4253- VO 250×50 mm) using water – acetonitrile (0.1% AcOH) as eluent (in gradient; flow 80 mL/min) to give (IIb-87) (42.2 mg, 46%) as a white solid. 1H NMR (400 MHz, CDCl3) delta 1.57 – 1.64 (m, 2H), 1.68 – 1.76 (m, 2H), 1.86-1.91 (m, 4H), 2.70 – 2.78 (m, IH), 3.99 (s, 4H), 7.33 (d, J = 3.3 Hz, IH), 7.48-7.52 (m, 2H), 7.60 (tt, J = 1.5, 7.4 Hz, IH), 7.89 (d. J = 3.3 Hz, IH), 8.23 (s, IH), 8.24 – 8.26 (m, 2H), 8.39 (d, J= 2.1 Hz, IH), 8.45 (d, J= 2.1 Hz, IH).; Procedure B involving (IX) (IX) (H)To a stirred solution of (IX) (0.5 mmol) in toluene (2.3 rnL) was added dichlorobis(acetonitrile)palladium (II) (12 mg, 0.05 mmol), tri-o-tolylphosphine (28 mg, 0.09 mmol) and the relevant stannane (V) (0.6 mmol). The reaction was heated to reflux (bath temperature HO0C) and the reaction monitored by TLC. When starting material was no longer present (2 – 6 hrs), the reaction mixture was poured onto saturated aqueous NaHCO3 (60 mL) and extracted with AcOEt (2 x 60 mL). The combined organic solutions were dried (MgSO4) and concentrated to give an oil which was purified using SGC and CH2Cl2 :hexane: AcOEt as eluent (gradient from CH2Cl2 :hexane: AcOEt= 1 : 1 :0 to 9:9:2, v/v) to afford the protected 3-thiazolyl 7-azaindole (II). Yield 25 – 80%.

The synthetic route of 173979-01-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; EISAI LONDON RESEARCH LABORATORIES LIMITED; WO2008/95943; (2008); 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.14527-41-4,5-Thiazolecarboxylic acid,as a common compound, the synthetic route is as follows.

Example 2(S)-N-( 1 -(5-(2-methoxyquinolin-3-yl)-JH-imidazol-2-yl)-7-(methylamino)-7-oxoheptyl)thiazole-5 -carboxamide (B 1) A glass tube was charged with thiazole-5-carboxylic acid (1.5 eq.), PS-carbodiimide resin (2 eq.), HOBt (1.7 eq.) and diluted with DCM (0.04 M). The tube was capped and stirred on a rotorfor 10 mm. Then, a solution of A4 in DMF (0.06 M) was added and the reaction mixture was stirred in a rotor for 24 h. After addition of MP-Trisamine resin (10 eq.) the reaction was stirred for additional 24 h. The resulting reaction mixture was filtered through a fitted syringe and washed with DCM. The combined organic solutions were concentrated under reduced pressure to give the tilte compound. MS (ESj C25H28N6035: 493 (M+H).

As the paragraph descriping shows that 14527-41-4 is playing an increasingly important role.

Reference£º
Patent; IRBM SCIENCE PARK S.P.A.; C.N.C.C.S. SCARL COLLEZIONE NAZIONALE DEI COMPOSTI CHIMICI E CENTRO SCREENING; ALTAMURA, Sergio; BIANCOFIORE, Ilaria; BRESCIANI, Alberto; FERRIGNO, Federica; HARPER, Steven; LAUFER, Ralph; ONTORIA ONTORIA, Jesus Maria; MALANCONA, Savina; MONTEAGUDO, Edith; NIZI, Emanuela; ORSALE, Maria Vittoria; PONZI, Simona; PAONESSA, Giacomo; SUMMA, Vincenzo; VENEZIANO, Maria; WO2014/67985; (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.10200-59-6,2-Thiazolecarboxaldehyde,as a common compound, the synthetic route is as follows.

Ortho triethyl formate (10 ml) and SP-112 [H+] (1.0 g) were added in ethanol (62 ml) solution of 145 (5.18 g, 45.78 mmol), and the resulting solution was refluxed for 5 hours. SP-112 [H+] of the reaction solution was separated by filtration, and the filtrate was distilled away under reducing pressure to filtrate the solvent. The residue was purified by silica gel column chromatography (elution solvent: ethyl acetate/n-hexane = 4/1) to obtain 146 (8.57 g, 100percent) as a colorless oily substance. APCI-MS m/z 188[M+H]+

The synthetic route of 10200-59-6 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Tohoku University; EP2103611; (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.1003-32-3,Thiazole-5-carboxyaldehyde,as a common compound, the synthetic route is as follows.

EXAMPLE 93 The process is performed as in Example 92 but starting with 0.45 g of 5-thiazolecarboxaldehyde, 0.45 g of 5H,10H-imidazo[1,2-a]indeno[1,2-e]pyrazin-4-one, 0.2 g of ammonium acetate and 4 ml of acetic anhydride. 0.35 g of 10-(5-thiazolylmethylene)-5H,10H-imidazo[1,2-a]indeno[1,2-e]pyrazin-4-one is obtained in the form of a dark red solid melting above 260 C. (Analysis, % calculated C: 64.14, H: 3.17, N: 17.60, O: 5.03, S: 10.07, % found C: 64.2, N: 17.2, S: 9.7).

1003-32-3 Thiazole-5-carboxyaldehyde 2773577, athiazole compound, is more and more widely used in various.

Reference£º
Patent; Rhone-Poulenc Rorer S.A.; US5807859; (1998); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica