Patent ID: 7642356

Claim:
A process for preparing a beta-keto ester compound of formula (1): wherein, Q represents C—H, C—NO 2 , C—F, C—OMe or N, X, Y and Z each independently represent H, halogen or NO 2 , R represents straight or branched C 1 -C 6 -alkyl or benzyl, and M represents alkali metal, comprising the steps of, 1) obtaining a compound of formula (6) by reacting a compound of formula (2) with a compound of formula (3) in the presence of metal salt; wherein Q, X, Y, Z and R are defined as above, wherein Q, X, Y, and Z are defined as above, and wherein R is defined as above and M represents alkali metal, and 2) hydrolyzing the compound obtained from step 1) in the presence of aqueous acid solution.