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Abstract of US
5670659 (A)
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Citraconic anhydride is prepared
in a single step by heating itaconic acid, optionally in
an inert organic solvent medium, in the presence of a
catalytically effective amount of an at least partially
organic acid/base catalyst compound having a pKa ranging
from 4 to 10, in particular a salt catalyst such as
pyridinium tosylate, itaconate or hydrochloride,
ammonium itaconate, or phosphinium hydrobromide. |
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Data supplied from the esp@cenet
database — Worldwide |
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