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US 6,784,308 B2Granted
Process for the preparation of aromatic nitriles
AssigneeBayer Aktiengesellschaft
InventorMarkus Eckert
Life of this patent
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Abstract
The invention relates to a process for the preparation of aromatic nitriles form halogenoaromatics or aryl perfluorosulfonates and alkali metal cyanides in the presence of palladium catalysts, zinc, and polyethers.
Claims9
A process for the preparation of aromatic nitriles of the formula (I)
- Ar—[CN]n (I)
- In which
- Ar represents a substituted or unsubstituted aromatic radical, and
- n represents one or two,
- comprising reacting
- (a) an aromatic compound of the formula (II),
- Ar—[X]n (II)
- In which
- Ar and n have the above-mentioned meaning for formula (I), and
- X each independently of one another represents chlorine, bromine, iodine or a perfluoroalkylsulfonyloxy radical with
- (b) one or more alkali metal cyanides,
- in the presence of
- (c) a palladium catalyst and
- (d) zinc and
- (e) one or more polyethers.
12 more elements
Dependencies are inferred from the claim text.