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CAS No. : | 571-55-1 | MDL No. : | MFCD02677683 |
Formula : | C9H11F3O4 | Boiling Point : | - |
Linear Structure Formula : | CH(OC2H5)CCO(OC2H5)COCF3 | InChI Key : | - |
M.W : | 240.18 | Pubchem ID : | - |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | 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 |
---|---|---|
77% | In 1,4-dioxane; ethanol; for 17.5h;Cooling with ice; Reflux; | Stage 3Ethyl 1-pyrimidin-2-yl-5-trifluoromethyl-1H-pyrazole-4-carboxylate An amount of 6.5 g (27 mmol) of ethyl 2-[1-ethoxymethylidene]-4,4,4-trifluoro-3-oxobutyrate was dissolved in ethanol/dioxane and the solution was admixed with 2.99 g (27.1 mmol) of 2-hydrazinopyrimidine with ice-bath cooling. The mixture was stirred at RT for 16 hours and then heated at reflux for a further 1.5 hours, and then evaporated, and the residue was purified by chromatography (cyclohexane/acetone).Yield: 6.08 g (77% of theory) 1H-NMR (D6-DMSO) 1.3 (t, 3H), 4.35 (q, 2H), 7.85 (t, 1H), 8.4 (s, 1H), 9.1 (d, 2H) |