N-carboxy anhydride intermediates
US4686295A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1983 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Mar 7, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D263/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to new compounds of the formula ##STR1## wherein A is a hydroxy, lower alkoxy, lower alkenoxy, diloweralkylamino lower alkoxy, acylamino lower alkoxy, acyloxy, lower alkoxy, aryloxy, arloweralkyloxy, amino, loweralkylamino, diloweralkylamino, aryloweralkylamino, hydroxyamino, or substituted aryloxy, or substituted arloweralkoxy wherein the substituent is methyl, halo or methoxy; R.sub.1, R.sub.2, and R.sub.3 are each hydrogen, lower alkyl, lower alkenyl, lower alkynyl, aryl, fused aryl-cycloalkyl, aralkyl, cycloalkyl, heterocyclic, substituted alkyl, alkenyl, or alkynyl groups in which the substituents are hydroxy, alkoxy, halo, amino, aminoalkyl, alkylamino, mercapto, or alkylmercapto, substituted cycloalkyl groups in which the substituents are alkyl, halo, haloalkyl, hydroxy, alkylamino, nitro or trifluoromethyl, and substituted aryl and heterocyclic groups in which the substituents are alkyl, hydroxy, alkoxy, hydroxyalkyl, halo, mercapto, alkylmercapto, mercaptoalkyl, haloalkyl, amino, alkylamino, aminoalkyl, nitro, methylenedioxy, or trifluoromethyl; X is hydrogen, alkyl, alkenyl or alkynyl of up to about 20 carbon atoms, aryl or aryl lower alkyl containi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.