p,p',p''-tris(diethylamino)trityl alcohol synthesis
- Product Name:p,p',p''-tris(diethylamino)trityl alcohol
- CAS Number:596-49-6
- Molecular formula:C31H43N3O
- Molecular Weight:473.6926
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Yield:-
Reaction Conditions:
Stage #1:leuco ethyl crystal violet with chloranil in ethanol at 70; for 2 h;
Stage #2: with sodium hydroxide in ethanol for 0.0833333 h;Heating;
Steps:
4.B; 4.C
The solid collected in Example 2, Part A, 150 milliliters of ethyl alcohol, and 25 grams of chloranil (an oxidizing agent) were added to a 150 milliliter 1-neck round bottom flask equipped with a Teflon coated magnet, condenser, and oil bath. The flask was placed in a 70 °C oil bath with stirring. A blue color began to develop immediately and deepen with time. The flask was heated for about 2 hours to insure complete oxidation of the Leuco form of the dye to the fully developed form, believed to be of the formula ; Example 4 Part C: Formation of the Carbinol Form of the Basic Dye After the reaction mixture had been fully oxidized, as outlined in Example 4, Part B, the pH was made alkaline with 40 % NaOH. The blue color immediately disappeared indicating the formation of the carbinol form of the dye. Heating and stirring was continued for 5 additional minutes. The crude product was poured into a 1000 milliliter beaker containing 150 milliliters of water and 2.5 grams of 40% NaOH and allowed to set overnight. The solids were collected by filtration and placed in a sealed container (approx 22.4 grams of carbinol violet dye obtained). The carbinol form of the dye is believed to be of the formula
References:
Xerox Corporation EP1956054, 2008, A2 Location in patent:Page/Page column 32; 33
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