Synthesis of bromobiphenyls
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United States of America Patent
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Oct 19, 1993
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N/A
app pub date -
Jul 17, 1992
filing date -
Jul 17, 1992
priority date (Note) -
Expired
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Abstract
Bromobiphenyls (such as 2-fluoro-4-bromobiphenyl) are synthesized by reacting together a phenylboronic acid (such as phenylboronic acid) and a bromoiodobenzene (such as 2-fluoro-4-bromoiodobenzene). The reaction generally takes place with the aid of a catalyst (such as palladium in a zero valance state) and an inert solvent (such as fluorobenzene). Control of temperature is very important to obtain both an acceptable reaction rate and an acceptable level of terphenyl byproduct.
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