2,3,5,6-Tetrafluoro-4-methoxymethylbenzyl alcohol
4-Methoxymethyl-2,3,5,6-tetrafluorobenzenemethanol
CAS: 83282-91-1
Molecular Formula: C9H8F4O2
2,3,5,6-Tetrafluoro-4-methoxymethylbenzyl alcohol - Names and Identifiers
2,3,5,6-Tetrafluoro-4-methoxymethylbenzyl alcohol - Physico-chemical Properties
| Molecular Formula | C9H8F4O2 |
| Molar Mass | 224.15 |
| Density | 1.407 |
| Melting Point | 51-53°C |
| Boling Point | 214 ºC |
| Flash Point | 107 ºC |
| Solubility | Chloroform, Methanol |
| Vapor Presure | 0.0928mmHg at 25°C |
| Appearance | Solid |
| Color | White |
| pKa | 12.85±0.10(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.464 |
| Physical and Chemical Properties | Off-white crystals |
2,3,5,6-Tetrafluoro-4-methoxymethylbenzyl alcohol - Risk and Safety
| Hazard Class | IRRITANT |
2,3,5,6-Tetrafluoro-4-methoxymethylbenzyl alcohol - Reference Information
| Overview | 4-methoxy-2, 3,5, 6-tetrafluorobenzyl alcohol, English name 4-Methoxymethyl-2,3,5,6-tetraFluoro benzenemethanol, Chinese alias 4-methoxymethyl -2,3,5, 6-tetrafluorobenzyl alcohol, 4-methoxymethyl -2,3,5, 6-tetrafluorobenzyl alcohol, tetrafluoro-p-methoxymethyl benzyl alcohol, 4-methoxymethyl-2, 3,5, 6-tetrafluorobenzyl alcohol, 2,3,5, 6-tetrafluoro-4-methoxymethylbenzyl alcohol, CAS No. 83282-91-1, molecular formula C9H8F4O2, molecular weight 224.15200;PSA:29.46000;Log P:1.88170. Density 1.407, boiling point 214°C, Flash Point 107°C, refractive index 1.464. 4-methoxy-2, 3,5, 6-tetrafluorobenzyl alcohol is useful as a synthetic insecticide, trimethoprim, a potent novel synthetic pyrethroid, with a high degree of vapor activity against mosquitoes. |
| synthesis | Method 1: 1,2,4, 5-tetrafluorobenzene was used as the starting material for the reaction, production of 4-methoxymethyl -2,3,5, 6-tetrafluorobenzyl alcohol: Method 2: through 2,3,5, 6-tetrafluoro-1, 4-methoxymethyl-2-3, 5, 6-tetrafluorobenzyl alcohol is produced by selective methylation of 4-benzenedimethanol. The specific steps are as follows: 1)2,3, reaction of 5, 6-tetrafluoro-1, 4-benzenedimethanol with inorganic base in water and water-immiscible organic solvents selected from hydrocarbons and ethers, 2) dimethyl sulfate and optionally a water-immiscible organic solvent are added to the reaction mixture to obtain the objective compound 4-methoxy-2, 3,5, 6-tetrafluorobenzyl alcohol. In 2nd), the reaction must be carried out in water and a water-immiscible organic solvent selected from the group consisting of hydrocarbons and ethers. Examples of water-immiscible organic solvents include aromatic hydrocarbons such as toluene and xylene, aliphatic hydrocarbons such as hexane and heptane and others such as tert-butyl methyl ether. |
Last Update：2024-04-10 22:29:15
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