发明名称 |
Catalytic system and method for coupling of aromatic compounds |
摘要 |
A catalytic process for production of biphenyl and its derivatives by coupling of substituted or unsubstituted monoaryl compounds in the presence of a catalytic system comprising at least one Pd (II) compound and a strong acid or a mixture of acids. The process provides high conversions and high selectivity under mild temperature conditions and short reaction times. The strong acid or mixture of acids has a Hammett acidity of less than about -10, and contains a predominant amount of counterions which form a weak ligand complex with palladium (II). The method is highly selective to formation of desired biaryl isomers, such as 4,4'-isomers, and allows control of the relative amounts of isomers of biaryl compounds and substituted monoaryl compounds in the final product. |
申请公布号 |
EP0970745(A1) |
申请公布日期 |
2000.01.12 |
申请号 |
EP19990112806 |
申请日期 |
1999.07.02 |
申请人 |
ARTEVA TECHNOLOGIES S.A.R.L. |
发明人 |
SCHIRALDI, DAVID A.;SHERMAN, SHELDON C.;SOOD, DHIRAJ S.;WHITE, MARK G. |
分类号 |
B01J31/02;B01J31/04;C07C2/76;C07C51/353;C07C67/343 |
主分类号 |
B01J31/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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