Thiophene synthesis
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United States of America Patent
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Mar 3, 1998
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N/A
app pub date -
Jun 24, 1996
filing date -
Jun 28, 1995
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Expired
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Abstract
A method of preparing a thiophene comprises reacting an organic compound containing a chain of at least 4 C atoms linked by single or double bonds with a source of sulphur in the vapour phase, in the presence of a jarosite-type catalyst, having the composition M(Fe.sub.0.8-1 Cr.sub.0.2-0)(OH).sub.6 X.sub.n wherein M is NH.sub.4 or an alkali metal; and X.sub.n represents one or more suitable anions.
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