PROCESSO PER PREPARARE ANIDRICI DI ACIDO CARBOSSILICO

A carboxylic acid anhydride, such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters comprising at least one metal of Group VIB of the Pe...

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Bibliographic Details
Main Author PUGACH JOSEPH
Format Patent
LanguageItalian
Published 28.05.1986
Edition4
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A carboxylic acid anhydride, such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters comprising at least one metal of Group VIB of the Periodic Table, or their compounds, and an arsine of the formula wherein R and R1 are monocyclic aryl groups or alkyl groups and R2 is the radical a monocyclic aryl group or an alkyl group, and wherein R3 and R4 are each a monocyclic aryl group or an alkyl group, with the proviso that at least one of R, R1 and R2 is a monocyclic aryl group, n being zero or a digit from 1-20.
Bibliography:Application Number: IT19800049795