Process for preparation of thiazolylalkoxy acrylates
US5194622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Nov 18, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D277/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of hydrogen, halogen, --CF.sub.3, alkyl, alkoxy and alkylthio of 1 to 8 carbon atoms, alkenyl and alkynyl of 2 to 8 carbon atoms, --SO.sub.2 alk and alk is alkyl of 1 to 8 carbon atoms, optionally substituted aryl, aryloxy and arylthio of 6 to 18 carbon atoms and optionally substituted heteroaryl, heteroaryloxy and heterocyclic of 5 to 6 ring members, R.sub.3 is selected from the group consisting of alkyl of 1 to 8 carbon atoms, alkenyl and alkynyl of 2 to 8 carbon atoms, aryl of 6 to 18 carbon atoms and alkoxyalkoxyalkyl of 3 to 14 carbon atoms, X is selected from the group consisting of --O--, --S-- and --NR.sub.4 --, R.sub.4 is selected from the group consisting of hydrogen, alkyl, alkenyl and alkynyl of up to 8 carbon atoms, --SO.sub.2 alkyl, --SO.sub.2 alkenyl and --SO.sub.2 alkynyl of up to 8 carbon atoms and optionally substituted aryl and --SO.sub.2 aryl of 6 to 18 carbon atoms, the double bond between the heterocycle of 5 member ring and the aromatic nucleus is of E and/or Z geometry comprising reacting a halide of the formula …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.