Process for the preparation of 2-(thien-2-yl)- and 2-(thien-3-yl)-ethylamine derivatives
US4482718A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Jun 29, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/65515
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for the preparation of 2-(thien-2-yl)- and 2-(thien-3-yl)-ethylamine derivatives of the general formula: ##STR1## in which R.sub.1, in the 2-, 3-, 4- or 5-position, is a hydrogen or halogen atom, a nitro, carboxyl, cyano or amino group, a linear or branched alkyl or alkoxy radical or a heterocyclic or non-heterocyclic aromatic radical, which is optionally mono- or polysubstituted, the aminoethyl chain is in the 2- or 3-position, R.sub.2, R.sub.3 and R.sub.4, which are the same or different, are hydrogen atoms or heterocyclic or non-heterocyclic aromatic radicals, which are optionally mono- or polysubstituted, and Ar is a heterocyclic or non-heterocyclic aromatic radical, which is optionally mono- or polysubstituted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.