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US 5,756,804 AGranted
Homogeneous process for carrying out cross-coupling reactions
AssigneeHoechst Aktiengesellschaft
InventorsSteffen Haber, Hans-Jerg Kleiner
Life of this patent
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Abstract
A process for preparing polycyclic aromatic compounds, which comprises reacting a) an aromatic boron compound with b) an aromatic halogen compound or an aromatic perfluoroalkylsulfonate in the presence of c) a base, d) a nickel or palladium catalyst, e) a phosphorus-containing ligand and f) a polyhydric alcohol, a sulfoxide or sulfone. The process gives high yields, in particular also in the coupling of chloroaromatics.
Claims9
A process for preparing polycyclic aromatic compounds, which comprises reacting
- a) an aromatic boron compound with
- b) an aromatic halogen compound or an aromatic perfluoroalkylsulfonate in the presence of
- c) a base selected from the group consisting of alkali metal and alkaline earth metal hydroxides alkali metal and alkaline earth metal carbonates, alkali metal hydrogen carbonates, alkali metal and alkaline earth metal acetates. alkali metal and alkaline earth metal alkoxides. and also primary. secondary and tertiary amines,
- d) nickel or palladium catalyst solution,
- e) a phosphorous-containing ligand and
- f) a polyhydric alcohol, a sulfoxide or sulfone.
3 more elements
Dependencies are inferred from the claim text.