Esterification process
US4614830A · kind A · utility
4Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1985 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Aug 9, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C69/76
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improvement in the process for esterification of 3,4-dihydroxyphenyl N-alkylaminoalkyl ketones with arylcarboxylic acid chlorides which comprises carrying out the esterification in the presence of a catalytic amount of a 4-di-lower-alkylaminopyridine or 4-(1-pyrrolidinyl)pyridine and an acid-acceptor comprising a tertiary amine or sterically-hindered secondary amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.