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CAS No. : | 36886-76-7 | MDL No. : | MFCD08276350 |
Formula : | C22H16O5 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | GRIKUIPJBHJPPN-UHFFFAOYSA-N |
M.W : | 360.36 | Pubchem ID : | 169832 |
Synonyms : |
|
Chemical Name : | 3',6'-Dimethoxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-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 hydrogenchloride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With diethyl ether; ethanol; sulfuric acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
o-(2-Hydroxy-4-methoxybenzoyl)benzoesaeure, m-Methoxyphenol; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride beim Erhitzen unter Druck; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With lead dioxide; acetic acid |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; acetic acid at 150 - 160℃; unter Druck; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With nitrobenzene |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1: 35% 2: 16% | With tris(bipyridine)ruthenium(II) dichloride hexahydrate; sodium hydrogencarbonate In acetonitrile at 20℃; for 60h; Inert atmosphere; Irradiation; regioselective reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
65% | Stage #1: fluorescein With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 1h; Inert atmosphere; Schlenk technique; Stage #2: methyl iodide In N,N-dimethyl-formamide at 70℃; for 24h; Inert atmosphere; Schlenk technique; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
89% | With niobium pentachloride In methanesulfonic acid at 95 - 100℃; for 1h; Inert atmosphere; | |
71% | With Zn0.95*Ti0.05O In neat (no solvent) at 160℃; for 4h; Green chemistry; | 2.3 General experimental procedure for fluorescein synthesis General procedure: In a typical experimental procedure, phthalic anhydride (1 mmol), resorcinol (2 mmol) and Zn0.950Ti0.050O (10 mol%) catalyst were heated with constant stirring for 1.33h at 160°C and the progress of the reaction was monitored by TLC. After the completion of reaction, the reaction mixture was dissolved in 1N NaOH (10 mL) and the catalyst was separated using centrifugation. The filtrate was acidified using 1N HCl until the solution was neutralized. During neutralization, the precipitation of the dye was observed which was further purified by recrystallization with methanol. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | Stage #1: fluorescein With potassium carbonate In acetone for 0.5h; Stage #2: dimethyl sulfate In acetone at 50℃; for 4h; |
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