Substituted carboxyalkoxyaminodihydrobenzophenones
US4316042A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1979 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | Aug 15, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C271/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula II: ##STR1## are produced by reacting a compound of the formula III ##STR2## with a compound of the formula IV: ##STR3## wherein R.sub.1 is hydrogen, alkyl of 1 to 5 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, alkyl of 1 to 4 carbon atoms substituted by cycloalkyl of 3 to 6 carbon atoms, polyhaloalkyl of 1 to 5 carbon atoms, allyl, propargyl, enzyl or aryl, PA1 R.sub.2 is hydrogen, halogen, alkyl or alkoxy, each of 1 to 4 carbon atoms, trifluoromethyl, nitro, alkylamino or dialkylamino, wherein the alkyl groups have 1 to 4 carbon atoms, or aryl, PA1 R.sub.3 is hydrogen, halogen, alkyl or alkoxy, each of 1 to 4 carbon atoms, or aryl, PA1 R.sub.4 is hydrogen, nitro, halogen, alkyl or alkoxy each of 1 to 4 carbon atoms or aryl, PA1 R.sub.5 is hydrogen, halogen, alkyl, alkylthio or alkoxy each of 1 to 4 carbon atoms, nitro, trifluoromethyl or aryl, PA1 R.sub.6 is hydrogen, halogen, alkyl of 1 to 4 carbon atoms, benzyl or aryl, and PA1 R is alkyl of 1 to 4 carbon atoms. Compounds II can be dehydrogenated and used as intermediates for 4-phenyl-quinazolin-2(1H)-ones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.