Reaktionsgleichung
[C:1]1([N:14]2[C:18](=[O:19])[CH:17]=[CH:16][C:15]2=[O:20])[CH:6]=[CH:5][CH:4]=[C:3]([N:7]2C(=O)C=CC2=O)[CH:2]=1.[C:21]1(=[O:27])[O:26][C:24](=[O:25])[CH:23]=[CH:22]1.C1(N)C=CC=C(N)C=1.CN(C)C=[O:39]>>[C:3]1([NH:7][C:21](=[O:27])/[CH:22]=[CH:23]\[C:24]([OH:26])=[O:25])[CH:4]=[CH:5][CH:6]=[C:1]([NH:14][C:18](=[O:19])/[CH:17]=[CH:16]\[C:15]([OH:20])=[O:39])[CH:2]=1Komponenten
5
Versuchsvorschrift
A typical example of this process is the formation of N,N'-m-phenylenedimaleimide. This involves the addition of maleic anhydride to a solution of m-phenylenediamine in dimethylformamide (DMF) and reacting these at a temperature of 35°-40° C. to form N,N'-m-phenylenedimaleamic acid, which is not isolated. The addition of sodium acetate and acetic anhydride follows, with a maximum reaction temperature for ring closure of 55°-60° C. On the completion of this reaction, a large excess of water is added, precipitating the N,N'-m-phenylenedimaleimide which is subsequently filtered, washed with water, and dried at a moderately elevated temperature. This process is outlined below: ##STR1## N,N'-m-phenylenedimaleimide
Aufarbeitung
- customat a temperature of 35°-40° C.
Quellen und Nachweise
- ORD-Eintrag
- ord-3f5146fed44841e8a5f378aacd89685a
- Quelldatensatz
- uspto-grants-1979_05
- Patentnummer
- US04154737
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