Process for conducting chemical reactions with formaldehyde
US5399759A · kind A · utility
2Cited by
13References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C249/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.