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| | Ethyl 4-methyl-5-thiazoleactate Basic information |
| Product Name: | Ethyl 4-methyl-5-thiazoleactate | | Synonyms: | ETHYL 4-METHYLTHIAZOLE-5-CARBOXYLATE;ETHYL 4-METHYL-5-THIAZOLEACTATE;ETHYL 4-METHYL-5-THIAZOLYL FORMATE;5-THIAZOLECARBOXYLIC ACID, 4-METHYL-, ETHYL ESTER;Ethyl-4-methyl-5-thizaolecarboxylate;4-Methyl-5-Thiazolecarboxylic Acid Ethyl Ester;ETHYL 4-METHYL-5-THIAZOLECARBOXYLATE;ethyl 4-methyl-1,3-thiazole-5-carboxylate | | CAS: | 20582-55-2 | | MF: | C7H9NO2S | | MW: | 171.22 | | EINECS: | | | Product Categories: | Febuxostat | | Mol File: | 20582-55-2.mol |  |
| | Ethyl 4-methyl-5-thiazoleactate Chemical Properties |
| Melting point | 28°C(lit.) | | Boiling point | 233°C(lit.) | | density | 1.198±0.06 g/cm3(Predicted) | | storage temp. | Keep in dark place,Sealed in dry,Room Temperature | | form | powder to lump | | pka | 1.57±0.10(Predicted) | | color | White to Almost white | | LogP | 1.410 (est) | | CAS DataBase Reference | 20582-55-2(CAS DataBase Reference) |
| HazardClass | IRRITANT | | HS Code | 2934208090 |
| | Ethyl 4-methyl-5-thiazoleactate Usage And Synthesis |
| Chemical Properties | white to light yellow crystal powde | | Synthesis | General procedure for the synthesis of ethyl 4-methylthiazole-5-carboxylate from ethyl 2-amino-4-methylthiazole-5-carboxylate: compound 3a (4.0 g, 21.5 mmol) was dissolved in 106 mL of 30% hypophosphite (H3PO2) solution. The reaction system was cooled to -5°C, after which sodium nitrite (NaNO2, 3.0 g, 2.0 eq.) was dissolved in 12 mL of water and slowly added dropwise to the reaction solution. After the dropwise addition, the reaction mixture was transferred to 0°C and kept for 1 hour, then stirring was continued for 2 hours at room temperature. Subsequently, pre-cooled sodium hydroxide solution (17 g NaOH dissolved in 200 mL of water) was added slowly dropwise. The reaction mixture was adjusted to neutral with sodium bicarbonate (NaHCO3) solution and then extracted with ether (Et2O, 50 mL x 3). The organic phases were combined and purified by column chromatography (eluent ratio: petroleum ether:ethyl acetate = 50:1, v/v) to give the yellow semi-solid product 3b (2.1 g, 56% yield). | | References | [1] Bioorganic and Medicinal Chemistry Letters, 2008, vol. 18, # 23, p. 6231 - 6235
[2] Patent: CN101921268, 2016, B. Location in patent: Paragraph 0128; 0131; 0136-0139
[3] Tetrahedron, 2013, vol. 69, # 22, p. 4436 - 4444 |
| | Ethyl 4-methyl-5-thiazoleactate Preparation Products And Raw materials |
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