Process for conducting chemical reactions with formaldehyde
AssigneeImperial Chemical Industries PLC
InventorGilbert Rodriguez
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Abstract
A formaldehyde reactant is provided to a chemical process or reaction, in the form of a formaldehyde-alcohol complex, by contacting paraformaldehyde with from about 0.25 to about 3 mole equivalents of an aliphatic alcohol in the presence of a catalytic amount of a base. In a preferred embodiment the chemical process is a process for the production of an aromatic azomethine by reaction of an aniline with formaldehyde. The azomethine may then be used to produce a haloacetanilide.
Claims18
In a process for production of an aromatic azomethine by reaction of an aniline with formaldehyde, the step of providing the formaldehyde in the form of a product produced by contacting paraformaldehyde with from about 0.25 to about 3 mole equivalents of an aliphatic alcohol having from 1 to 4 carbon atoms in the presence of a catalytic amount of a base.
Dependencies are inferred from the claim text.