Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sodium Carbonate | HCID 10340 | — |
| Reactant | 4-Hydroxy-3-(2-(2-hydroxy-1-naphthalenyl)diazenyl)benzenesulfonic acid | HCID 16410 | — |
| Reactant | 2-(Bis(4-(dimethylamino)phenyl)methyl)-5-(dimethylamino)benzoic acid | HCID 102063 | — |
| Product | Crystal Violet lactone | HCID 73773 | — |
Reaction Steps
In accordance with the process of Example 1, the aqueous solution containing a sodium carbonate and 2-[4,4'-bis-(dimethylamino)benzhydryl]-5-dimethylaminobenzoic acid and cobalt complex of 1-[(2-hydroxynaphthyl)azo]-2-hydroxybenzene-5-sulfonic acid [I], was heated at 90° C. and 36 wt. parts of air was fed into it under vigorously stirring during 15 hours and the precipitate was separated by a filtration and washed with a dilute aqueous solution of sodium hydroxide and with water to obtain 39.4 wt. parts of 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide having a melting point of 181° to 183° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US04271075 |
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| Source dataset | uspto-grants-1981_06 |
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| ORD ID | ord-020e6a3b4213428e82e3b4c5e20bfc11 |
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| Source note | uspto-grants-1981_06 |
|---|
