Substituted-2,3-dihydrobenzofuran-2-ones
US4252817A · kind A · utility
6Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1979 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | May 11, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/83
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention provides new compounds of the formula, ##STR1## wherein R.sub.1 is alkyl of 1 to 10 carbon atoms, cycloalkyl of 3 to 8 carbon atoms or phenyl, PA1 R.sub.2 is hydrogen or lower alkyl, and PA1 R.sub.3 is halogen, nitro, lower alkyl, methylthio, hydroxy, lower alkoxy, acyloxy or acylamino, with the proviso that when R.sub.3 is in the 5 position, and R.sub.1 and R.sub.3 are identical and signify a straight alkyl chain of 1 to 5 carbon atoms, R.sub.2 is lower alkyl, useful as anti-phlogistics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.