Process for the preparation of bis(amidocarboxylic acids)
US5393902A · kind A · utility
2Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1994 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Apr 26, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C231/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is reported for the preparation of bis(amidocarboxylic acid) involving reacting an ester with an aminocarboxylate compound, the latter being formed from lactams or aminocarboxylic acids and salts thereof. The ester and aminocarboxylate compound are present in a weight ratio of about 1:1 to about 1:4, and reaction is conducted in a mono- or polyhydric alcohol solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.