[EN] PROCESS FOR THE PREPARATION OF 4,4-DIFLUORO-3-OXOBUTANOIC ACID ESTERS<br/>[FR] PROCEDE DE PREPARATION D'ESTERS D'ACIDE 4,4-DIFLUORO-3-OXOBUTANOIQUE
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2006005612A1
公开(公告)日:2006-01-19
The present invention relates to a process for the preparation of a compound of the formula (I), wherein R is C1-12 alkyl, by the contact of a compound of the general formula (II) , wherein R1 and R2 are each, independently, C1-12 alkyl; or R1 and R2 join together with the nitrogen atom to which they are attached to form an alicyclic amine ring containing 4 to 7 carbon atoms or a morpholine ring, with an acetic acid ester of the general formula (III) CH3COOR, wherein R is as defined under formula (I), in the presence of a base.
Process for the Preparation of 4,4-Difluoro-3-Oxobutanoic Acid Esters
申请人:Walter Harald
公开号:US20080004465A1
公开(公告)日:2008-01-03
The present invention relates to a process for the preparation of a compound of the formula (I), wherein R is C
1-12
alkyl, by the contact of a compound of the general formula (II), wherein R
1
and R
2
are each, independently, C
1-12
alkyl; or R
1
and R
2
join together with the nitrogen atom to which they are attached to form an alicyclic amine ring containing 4 to 7 carbon atoms or a morpholine ring, with an acetic acid ester of the general formula (III) CH
3
COOR, wherein R is as defined under formula (I), in the presence of a base.