Reaktionsgleichung
[F:1][C:2]1[C:3](F)=[C:4]([F:13])[C:5]([F:12])=[C:6]([C:10]#[N:11])[C:7]=1[C:8]#[N:9].[Cl:15][C:16]1[C:21]([OH:22])=[C:20]([Cl:23])[C:19]([Cl:24])=[C:18]([OH:25])[C:17]=1[Cl:26]>>[C:8]([C:7]1[C:2]([F:1])=[C:3]([C:4]([F:13])=[C:5]([F:12])[C:6]=1[C:10]#[N:11])[O:22][C:21]1[C:16]([Cl:15])=[C:17]([Cl:26])[C:18]([O:25][C:3]2[C:4]([F:13])=[C:5]([F:12])[C:6]([C:10]#[N:11])=[C:7]([C:8]#[N:9])[C:2]=2[F:1])=[C:19]([Cl:24])[C:20]=1[Cl:23])#[N:9]Komponenten
Versuchsvorschrift
The objective 1,4-bis(3,4-dicarboxytrifluorophenoxy)tetrachlorobenzene dianhydride is produced as an embodiment by reacting tetrafluorophthalonitrile and tetrachlorohydroquinone (or its metal salts such as 2 Na salt; it is summarized as “tetrachlorohydroquinone”) in the presence of a base in a solvent at a temperature of −20° C. to 200° C. for 0.1 to 20 hours to form 1,4-bis(3,4-dicyanotrifluorophenoxy)tetrachlorobenzene (Step 1a); hydrolyzing the resulting 1,4-bis(3,4-dicyanotrifluorophenoxy)tetrachlorobenzene with an acid at a temperature of 50° C. to 300° C. for 0.5 to 20 hours to form 1,4-bis(3,4-dicarboxytrifluorophenoxy)tetrachlorobenzene (Step 1b); dissolving the reaction solution including 1,4-bis(3,4-dicarboxytrifluorophenoxy)tetrachlorobenzene in a medium containing an organic solvent once, purifying and separating the product therefrom (Step 1c); and then dehydrating the separated 1,4-bis(3,4-dicarboxytrifluorophenoxy)tetrachlorobenzene (Step 1d).
Aufarbeitung
- customat a temperature of −20° C. to 200° C.
- customfor 0.1 to 20 hours
Quellen und Nachweise
- ORD-Eintrag
- ord-7011c87327d6418db94653766a998e8b
- Quelldatensatz
- uspto-grants-2005_07
- Patentnummer
- US06916959B2
Verknüpfte Notizen
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