Claims
- 1. A phthalimide of the general formula ##STR7## wherein X denotes hydrogen or up to four halogen atoms,
- a and b independently of each other denote 0 or 1 and
- R denotes a C.sub.1 -C.sub.4 -alkyl radical.
- 2. A phthalimide according to claim 1 having the following formula ##STR8##
- 3. A phthalimide according to claim 1, having the following formula ##STR9##
- 4. A process for the production of a phthalimide according to claim 1 in which a phthalic anhydride of the general formula ##STR10## wherein X has the same meaning as in claim 1, is reacted with an amine of the general formula ##STR11## wherein R,a and b have the same meanings as in claim 1, in substantially equimolar amounts at 117.degree. C., in the present of glacial acetic acid, as solvent and cyclohexane, as a water-entraining agent.
- 5. A process according to claim 4, in which the glacial acetic acid is present in an amount of 2.5 to 3.0 liters per mole of amine of formula (II).
- 6. A process according to claim 4, in which the cyclohexane is present in an amount of 250 to 300 ml per mole of amine of formula (II).
- 7. A process according to claim 4, in which the amine of formula (II) is a compound of the formula ##STR12##
- 8. The phthalimide produced by the process of claim 4.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3337857 |
Oct 1983 |
DEX |
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Parent Case Info
This application is a division of application Ser. No. 661,770 filed Oct. 17, 1984 U.S. Pat. No. 4,661,543, 4-28-87.
US Referenced Citations (7)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0019126 |
Apr 1980 |
EPX |
0019127 |
Apr 1980 |
EPX |
2918882 |
Nov 1980 |
DEX |
2918883 |
Nov 1980 |
DEX |
Divisions (1)
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Number |
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Parent |
661770 |
Oct 1984 |
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