Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Ethylene Glycol | HCID 174 | — |
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Cesium carbonate | HCID 10796 | — |
| Reactant | 2-Fluorotetracene-5,12-dione | HCID 20089828 | — |
| Solvent | Water | HCID 962 | — |
| Product | HCID 13498876 | HCID 13498876 | 97.1% |
Reaction Steps
27.6 g (0.1 mol) of 2-fluoro-5,12-naphthacenequinone, 32.5 g (0.1 mol) of Cs2CO3 and 300 ml of ethylene glycol are introduced into a sulfonating flask under nitrogen. After heating to 125° C., the mixture is stirred for 3 h. The reaction mixture is then poured into 3000 ml of water containing hydrochloric acid and the product which has precipitated is filtered off and washed several times with water. After drying in vacuo at 80° C., 30.3 g (97.1%) of pure product are obtained, melting point 208.8° C. The procedure is analogous in Examples 19-23 (see Table 2).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US05112977 |
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| Source dataset | uspto-grants-1992_05 |
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| ORD ID | ord-a7cba04c718343c09ef1c056401f8b86 |
|---|
| Source note | uspto-grants-1992_05 |
|---|
