PROCESS FOR THE PREPARATION OF 1-ARYL-3-CYCLOPROPYL-1,3-PROPANEDIONES
申请人:——
公开号:US20020002309A1
公开(公告)日:2002-01-03
A process for preparing a compound of the formula:
1
which comprises reacting a compound of the formula:
2
wherein R
1
is C
1-6
straight- or branched-chain alkyl, with a compound of the formula:
3
in an aprotic solvent in the presence of base.
PROCESS FOR THE PREPARATION OF 2-ALKYLTHIO BENZOIC ACID DERIVATIVES
申请人:——
公开号:US20020103396A1
公开(公告)日:2002-08-01
A process for preparing a compound of the formula
1
comprising reacting a compound of the formula
2
wherein R
3
is nitro or halo, or a salt thereof, with a compound of the formula R
1
SX (III) wherein X is hydrogen or alkali metal.
2-alkylmercapto-4-(trifluoromethyl)benzoic esters and a process for
申请人:Hoechst AG
公开号:US05744021A1
公开(公告)日:1998-04-28
The invention relates to 2-alkylmercapto-4-(trifluoromethyl)benzoic esters of the formula (II), in which R.sup.1 and R.sup.2 are, independently of each other, (C.sub.1 -C.sub.6) alkyl, and a process for their preparation, which comprises reacting 3,4-dichlorobenzotrifluoride electrochemically at an anode with CO.sub.2 to give 2-chloro-4-(trifluoromethyl)-benzoate, converting it into the corresponding benzoic ester of the formula (I), and then reacting it with an alkylmercaptide R.sup.2 S.sup.e. ##STR1##
Process for the preparation of 2-alkylthio benzoic acid derivatives
申请人:Rhone-Poulenc Agro
公开号:US06777575B2
公开(公告)日:2004-08-17
A process for preparing a compound of the formula
comprising reacting a compound of the formula
wherein R3 is nitro or halo, or a salt thereof, with a compound of the formula R1SX (III) wherein X is hydrogen or alkali metal.
Process for the preparation of 1-aryl-3-cyclopropyl-1,3-propanediones
申请人:Rhone-Poulenc Agro
公开号:US06486356B2
公开(公告)日:2002-11-26
A process for preparing a compound of the formula:
which comprises reacting a compound of the formula:
wherein R1 is C1-6 straight- or branched-chain alkyl, with a compound of the formula:
in an aprotic solvent in the presence of base.