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CAS No. : | 355-80-6 | MDL No. : | MFCD00039631 |
Formula : | C5H4F8O | Boiling Point : | - |
Linear Structure Formula : | H(CF2)4CH2OH | InChI Key : | JUGSKHLZINSXPQ-UHFFFAOYSA-N |
M.W : | 232.07 | Pubchem ID : | 9641 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P210-P261-P264-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P370+P378-P362+P364-P403+P233-P501 | UN#: | N/A |
Hazard Statements: | H227-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 |
---|---|---|
With tetrabutylammomium bromide; potassium hydroxide; In water; at 60 - 75℃; for 73h; | General procedure: 3-Methyl-3-(2,2,3,3,-tetrafluoropropoxymethyl)oxetane and 3-methyl-3-(2,2,3,3,4,4,5,5-octafluoropentyloxymethyl)-oxetane are designated 4F and 8F monomers (Fig.1). Their preparation was carried out by nucleophilic substitution using phase transfer catalysis (TBAB) [37-39]. Scheme S1 illustrates the reaction of BrOx with fluorinated alcohols. As a specific example for 4F monomer, BrOx (41.25g, 250mmol), 4F alcohol (46.2g, 350mmol) and TBAB (5g, 0.0125mmol) were heated to 60C in 20mL water. Aqueous KOH (15.8g, 87%) in water (20mL) was added drop wise over 1h. The solution was heated to 75C with stirring for 72h. 4F monomer was extracted with dichloromethane, the solution dried with MgSO4, and the product freed of solvent with a rotovap. GC-MS showed the presence of a small amount of BrOx. Short path distillation gave >99% 4F monomer (b.p. 85C/3.3mmHg). 8F monomer was prepared and purified in an analogous manner (b.p. 65C/0.8mmHg). |
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