Process for the preparation of 2-alkyl-3,5,6,7- or 8-substituted-4(3H)-quinazolinones
US5342944A · kind A · utility
16Cited by
2References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 19, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Jul 19, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D239/90
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel process for producing 2-alkyl-3,5,6,7 or 8-substituted-4 (3H)-quinazolinones of the formula: ##STR1## where R, R.sup.1 and R.sup.2 are defined in the specification by reacting the appropriately N-acyl substituted aminobenzoic acids with ethylchloroformate followed by further reaction with ammonia or a primary amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.