Patent ID: 6333414
Filing Date: 2001-12-25
Classification: C07D

Abstract:
A process for preparing an oxazole of formula (II): ##STR17##comprising reacting thiourea with a diketone ester of formula (I): ##STR18##wherein groups R.sub.1, R.sub.2, and R.sub.3, which are identical or different, are chosen from:saturated and unsaturated, linear and branched C.sub.1 -C.sub.12 hydrocarbon groups, wherein said C.sub.1 -C.sub.12 hydrocarbon groups are unsubstituted or substituted by at least one substituent chosen from --OR, --SR, --NRR', --COOR, --CN, --SO.sub.n CH.sub.3, --CF.sub.3, and halogens;aryl groups unsubstituted or substituted by at least one substituent chosen from saturated and unsaturated, linear and branched C.sub.1 -C.sub.12 hydrocarbon groups, --OR, --NRR', --COOR, --CN, --SO.sub.n CH.sub.3, --SR, --CF.sub.3 and halogens; andsaturated and unsaturated C.sub.5-10 heterocyclic groups comprising at least one heteroatom chosen from N, S, and O, wherein said heterocyclic groups are unsubstituted or substituted by at least one substituent chosen from linear and branched C.sub.1 -C.sub.12 hydrocarbon groups, --OR, --NRR', --COOR, --CN, --SO.sub.n CH.sub.3, --SR, --CF.sub.3, and halogens,wherein R and R', which are identical or different, are each chosen from hydrogen atoms and saturated and unsaturated, linear, branched, and cyclic C.sub.1 -C.sub.12 hydrocarbon groups, and n has a value chosen from 0, 1, and 2.