9-fluorenemethanol (CAS NO 24324-17-2)


Specifications:
Item | Specification |
Appearance | White or almost white or light yellow |
purity | ≥98%(HPLC) |
CAS No. | 24324-17-2 |
EINECS No. | 246-167-5 |
BRN | 2330017 |
Density | 1.0304g/cm3 |
Molecular formula | C14H12O |
Molecular weight | 196.25 |
Melting point | 104~107℃ |
Boiling point | 293.14℃ |
Purity | ≥98%(HPLC) |
Solubility | Soluble in methanol |
Preparation:
A method for preparing 9-fluorene methanol, which comprises the following steps:
Step 1. Synthesize 9-fluorene methanol, which comprises the following two steps:
step 1.1. Under the action of a catalyst and a co-catalyst, make fluorene 9 One hydrogen on the upper part is removed in the form of a proton, and the generated fluorene anion reacts with ethyl formate to generate 9-fluorene formaldehyde;
step 1.2. Using a reducing agent, 9-fluorene formaldehyde is reduced by a reduction reaction to form a crude product of 9-fluorene methanol
Step 2. Use the solvent two-step purification method to purify 9-fluorene methanol, which includes the following two steps:
step 2.1. The crude product of 9-fluorene methanol is heated and dissolved in the first solvent in a certain proportion, and the insoluble matter is filtered out , The filtrate is cooled, the crystals are precipitated, and then filtered and vacuum dried to obtain the primary purification product of 9-fluorene methanol after the first step purification;
step 2.2. The primary purification product of 9-fluorene methanol after the first step purification , Dissolved in the second solvent according to a certain proportion, filtered out the insoluble matter, and then precipitated crystals on the filtrate by the elution method. After cooling, filtered and dried in vacuum to obtain purified 9-fluorene methanol.



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