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CAS No. : | 386715-34-0 | MDL No. : | MFCD02173905 |
Formula : | C7H5F3N2S | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | PDBGSSVKKHIEBN-UHFFFAOYSA-N |
M.W : | 206.19 | Pubchem ID : | 2777886 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P233-P260-P261-P264-P270-P271-P280-P301+P312-P302+P352-P304-P304+P340-P305+P351+P338-P312-P321-P322-P330-P332+P313-P337+P313-P340-P362-P363-P403-P403+P233-P405-P501 | UN#: | N/A |
Hazard Statements: | H302-H312-H315-H319-H332-H335 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In ethanol Heating / reflux; | 10.5 g 6-Trifluoromethyl-thionicotinamide (derived from 6-Trifluoromethyl-nicotinic acid according to the method described for 5-Chloromethyl-4-methyl-2-(1-methyl-cyclohexyl)-oxazole and 5-Chloromethyl-2-(4,4-difluoro-cyclohexyl)-4-methoxymethyl-thiazole) and 10.0 g 2-Chloro-4-methoxy-3-oxo-butyric acid methyl ester were dissolved in 100 ml ethanol and heated under reflux overnight. The cooled reaction mixture was evaporated under reduced pressure and the resulting residue was purified by RP-HPLC to obtain 1.9 g 4-Methoxymethyl-2-(6-trifluoromethyl-pyridin-3-yl)-thiazole-5-carboxylic acid methyl ester.C13H11F3N2O3S (332.30), MS (ESI): 333.0 (M+H+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In ethanol at 95℃; for 36h; | 1 Step 1: Ethyl 2-chloroacetate (4.77 mL, 32.7 mmol) was added to a solution of 6- (trifluoromethyl)pyridine-3-carbothioamide (5.0 g, 24.25 mmol) in ethanol (80 mL) and the mixture was heated to reflux at 95°C for 36 h. After cooling to rt, the resulting suspension was filtered off and dried in vacuum give ethyl 4-methyl-2-(6-(trifluoromethyl)pyridin-3-yl)thiazole-5- carboxylate. The filtrate was concentrated and then triturated with a small amount of EtOH, filtered off cold and dried in vacuo to give more ethyl 4-methyl-2-(6-(trifluoromethyl)pyridin-3- yl)thiazole-5-carboxylate. LCMS (method b) m/z317.1 [M+H]+, tR = 1.25 min.1H NMR (400 MHz, DMSO-d6) δ ppm 9.35 (s, 1H), 8.64 (d, J = 7.4 Hz, 1H), 8.06 (d, J = 8.3 Hz, 1H), 4.33 (q, J = 7.2 Hz, 2H), 2.74 (s, 3H), 1.32 (t, J = 7.1 Hz, 3H). | |
In ethanol at 95℃; for 36h; | 1 Step 1: Ethyl 2-chloroacetate (4.77 mL, 32.7 mmol) was added to a solution of 6- (trifluoromethyl)pyridine-3-carbothioamide (5.0 g, 24.25 mmol) in ethanol (80 mL) and the mixture was heated to reflux at 95°C for 36 h. After cooling to rt, the resulting suspension was filtered off and dried in vacuum give ethyl 4-methyl-2-(6-(trifluoromethyl)pyridin-3-yl)thiazole-5- carboxylate. The filtrate was concentrated and then triturated with a small amount of EtOH, filtered off cold and dried in vacuo to give more ethyl 4-methyl-2-(6-(trifluoromethyl)pyridin-3- yl)thiazole-5-carboxylate. LCMS (method b) m/z317.1 [M+H]+, tR = 1.25 min.1H NMR (400 MHz, DMSO-d6) δ ppm 9.35 (s, 1H), 8.64 (d, J = 7.4 Hz, 1H), 8.06 (d, J = 8.3 Hz, 1H), 4.33 (q, J = 7.2 Hz, 2H), 2.74 (s, 3H), 1.32 (t, J = 7.1 Hz, 3H). | |
In ethanol at 95℃; for 36h; | Step 1: Ethyl 2-chloroacetate (4.77 mL, 32.7 mmol) was added to a solution of 6- (trifluoromethyl)pyridine-3-carbothioamide (5.0 g, 24.25 mmol) in ethanol (80 mL) and the mixture was heated to reflux at 95°C for 36 h. After cooling to rt, the resulting suspension was filtered off and dried in vacuum give ethyl 4-methyl-2-(6-(trifluoromethyl)pyridin-3-yl)thiazole-5- carboxylate. The filtrate was concentrated and then triturated with a small amount of EtOH, filtered off cold and dried in vacuo to give more ethyl 4-methyl-2-(6-(trifluoromethyl)pyridin-3- yl)thiazole-5-carboxylate. LCMS (method b) m/z317.1 [M+H]+, tR = 1.25 min.1H NMR (400 MHz, DMSO-d6) δ ppm 9.35 (s, 1H), 8.64 (d, J = 7.4 Hz, 1H), 8.06 (d, J = 8.3 Hz, 1H), 4.33 (q, J = 7.2 Hz, 2H), 2.74 (s, 3H), 1.32 (t, J = 7.1 Hz, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: ethanol / 36 h / 95 °C 2: lithium hydroxide monohydrate; lithium hydroxide monohydrate / ethanol / 1.5 h / 20 °C |
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