Chemistry of hydrocarbon compounds – Aromatic compound synthesis – Having alkenyl moiety – e.g. – styrene – etc.
Patent
1999-03-26
2000-10-03
Knode, Marian C.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
Having alkenyl moiety, e.g., styrene, etc.
585435, 585436, 585437, C07C 1546, C07C 136, C07C 1207, C07C 1540, C07G 120
Patent
active
061275905
ABSTRACT:
This invention relates generally to the field of chemical synthesis, and more specifically, to the field of oxidative coupling of olefinic compounds and aromatic compounds, to produce olefinically substituted aromatic compounds. More particularly, this invention relates to methods for oxidative coupling of olefinic compounds and aromatic compounds which employ a rhodium(III) acetylacetonate catalyst and a copper(II) redox agent in a reaction medium which does not comprise a carboxylic acid component. In one embodiment, this invention pertains to methods for the preparation of styrene by the oxidative coupling of ethylene (an olefinic compound) and benzene (an aromatic compound), in the presence of Rh(acac).sub.2 Cl(H.sub.2 O), as catalyst, and Cu(II)(CH.sub.3 COO).sub.2, as copper(II) redox agent, in which benzene is both a reactant and the reaction medium.
REFERENCES:
patent: 3775511 (1973-11-01), Shue
patent: 3848010 (1974-11-01), Intille
patent: 3936473 (1976-02-01), Symon et al.
Matsumoto Takaya
Periana Roy
Taube Douglas
Dang Thuan
Knode Marian C.
Nippon Mitsubishi Oil Corporation
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