Process for the preparation of D1-.beta.-aryl amino acids
US4647694A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Mar 12, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/74
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of DL-.beta.-aryl-amino acids of the general Formula ##STR1## wherein R, R.sub.1 and R.sub.2 stand for hydrogen, halogen, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, nitro or C.sub.1-4 dialkylamino; whereby PA0 in the case of monosubstituted derivatives R and R.sub.1 are hydrogen and R.sub.2 has the same meaning as stated above and can be attached to position 2, 3 or 4 related to the methylene group; PA0 in the case of disubstituted derivatives R is hydrogen and R.sub.1 and R.sub.2 have the same meaning as stated above and are attached to positions 2,3; 2,4; 2,5; 2,6; 3,4 or 3,5 related to the methylene group; PA0 in the case of trisubstituted derivatives R, R.sub.1 and R.sub.2 have the same meaning as stated above and are attached to positions 2,3,4; 2,3,5; 2,3,6; 3,4,5 or 3,4,6 related to the methylene group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.