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CAS No. : | 725-89-3 | MDL No. : | MFCD00000388 |
Formula : | C9H4F6O2 | Boiling Point : | - |
Linear Structure Formula : | (CF3)2C6H3COOH | InChI Key : | - |
M.W : | 258.12 | Pubchem ID : | - |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-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 |
---|---|---|
74% | With lithium aluminium tetrahydride; In diethyl ether; at 0 - 35℃; for 10h; | Into 460 ml (0.46 mol) of a 1.0 M diethyl ether solution of aluminum lithium hydride cooled to 0C, 80 g (0.31 mol) of 3,5-bis(trifluoromethyl)benzoic acid obtained in the same manner as in Example 2 was gradually added. The reaction solution was heated to the reflux temperature (35C) while stirring under a nitrogen flow to continue the reaction for 10 h. After completion of the reaction, the reaction solution was cooled to 0C and 20 ml of water was added over 15 min. Then, 20 ml of a 15% sodium hydroxide aqueous solution and 60 ml of water were gradually added. After stirring for 30 min, the organic phase was separated by filtration and dried over anhydrous sodium sulfate. After removing anhydrous sodium sulfate by filtration, the organic phase was analyzed by gas chromatography. It was confirmed that 58.6 g (0.24 mol) of the aimed 3,5-bis(trifluoromethyl)benzyl alcohol was produced (yield: 78%; selectivity: 91%). By vacuum distillation after removing ether, 55.9 g (0.23 mol) of 3,5-bis(trifluoromethyl)benzyl alcohol was isolated (yield: 74%). The purity determined by gas chromatography was 99% or higher. The results of ICP total elements analysis showed that none of Li, Na, K, Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, V, Nb, Cr, Mo, W, Mn, Fe, Ru, Co, Rh, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, In, Si, Sn, Pb, P, Sb and S were detected, and the content of each of group 1 and group 2 elements was 1 ppm or lower. |