Claims
- 1. A process for the preparation of perylene- 3,4,9,10-tetracarboxylic acid anhydride monoimides of the formula ##STR19## in which R is hydrogen, amino or alkyl of 1 to 4 carbon atoms which is unsubstituted or substituted by cycloalkyl of 4 to 8 carbon atoms, cyano, hydroxy, carbamoyl, lower dialkylamino, morpholyl, phenyl which is unsubstituted or substituted by halogen or lower alkyl, or alkoxy of 1 of 8 carbon atoms which is unsubstituted or substituted by lower alkoxy; X is chlorine or bromine; and n is a number from 0 to 4, which comprises reacting a monoalkali metal salt of perylene-3,4,9,10-tetracarboxylic acid monoanhydride, of the formula ##STR20## in which Me is sodium or potassium and X and n have the abovementioned meaning, with a compound of the formula R--NH.sub.2 in which R has the abovementioned meaning, at 0.degree.-130.degree. C.
- 2. The process as claimed in claim 1, in which n is a number from 0 to 2.
- 3. A process as claimed in claim 1, wherein Me is potassium and n is 0.
- 4. A process as claimed in claim 1, wherein the reaction is carried out at 0.degree.-95.degree. C.
- 5. The process as claimed in claim 1, wherein the reaction is carried out at 0.degree. to 95.degree. C., and at least two mols of RNH.sub.2 are employed per mol of monoalkali metal salt.
- 6. The process as claimed in claim 1, wherein at least three mols of RNH.sub.2 are employed per mol of monoalkali metal salt, and the reaction is carried out in water.
Priority Claims (1)
Number |
Date |
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3017185 |
May 1980 |
DEX |
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Parent Case Info
This application is a division of application Ser. No. 599,202, filed Apr. 11, 1984 now U.S. Pat. No. 4,599,408 which is a continuation of application Ser. No. 261,454 filed May 7, 1981, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
2543747 |
Schrader |
Mar 1951 |
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4141881 |
Babler |
Feb 1979 |
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4153602 |
Schiessler et al. |
May 1979 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
599202 |
Apr 1984 |
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Continuations (1)
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Number |
Date |
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Parent |
261454 |
May 1981 |
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