Process for preparing diketone compounds
US6235942A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1998 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Oct 28, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing compounds of the formula: ##STR1## wherein R.sub.2 is lower alkyl; or phenyl optionally substituted by from one to five groups, the same or different, which are lower alkyl, lower haloalkyl, halogen or --SR.sub.4 ; R.sub.3 is halogen, lower alkyl, lower haloalkyl, lower alkoxy, lower haloalkoxy, --S-alkyl, cycloalkyl having from 3 to 7 carbon atoms in the ring, alkenyl or alkynyl having from 3 to 7 carbon atoms, or -(CR.sub.5 R.sub.6)--SR.sub.2 wherein q is one or two; R.sub.4 is lower alkyl; R.sub.5 and R.sub.6 independently represent hydrogen, lower alkyl or lower haloalkyl; and n is zero or an integer from one to three; intermediate compounds of the formula: ##STR2## and processes for preparing them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.