PROCESS FOR THE PREPARATION OF DERIVATIVES OF 1-(2- HALOBIPHENYL-4-YL)-CYCLOPROPANECARBOXYLIC ACID
申请人:PIVETTI Fausto
公开号:US20110039934A1
公开(公告)日:2011-02-17
Compounds according to formula (IA):
may be efficiently prepared by the disclosed process.
根据公式(IA),化合物可以通过所披露的方法高效制备。
PROCESS FOR THE PREPARATION OF DERIVATIVES OF 1-(2-FLUORO[1,1'-BIPHENYL]-4-YL)-CYCLOPROPANECARBOXYLIC ACID
申请人:CHIESI FARMACEUTICI S.p.A
公开号:US20140378696A1
公开(公告)日:2014-12-25
The present invention relates to a process for the preparation of a compound of formula (I) or a pharmaceutically acceptable salt thereof:
wherein R represents one or more groups independently selected from fluorine, chlorine, bromine, and iodine,
said process comprising the cyclopropanation of a compound of formula (II) with ethylene carbonate or ethylene sulfate:
wherein X is chlorine, bromine, iodine or a triflate group (CF
3
SO
3
) or a group
wherein R is as defined above and G is —CN or —COOR
2
wherein R
2
is a C
1
-C
4
straight or branched alkyl chain.
[EN] IMPROVED PROCESS FOR THE PREPARATION OF DERIVATIVES OF 1-(2-FLUORO[1,1'-BIPHENYL]-4-YL)-CYCLOPROPANECARBOXYLIC ACID<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION DE DÉRIVÉS D'ACIDE 1-(2-FLUORO[1,1'-BIPHÉNYL]-4-YL)-CYCLOPROPANECARBOXYLIQUE
申请人:CHIESI FARMA SPA
公开号:WO2014206898A1
公开(公告)日:2014-12-31
The present invention relates to a process for the preparation of a compound of formula (I) or a pharmaceutically acceptable salt thereof: formula (I) wherein R represents one or more groups independently selected from fluorine, chlorine, bromine, and iodine, said process comprising the cyclopropanation of a compound of formula (II) with ethylene carbonate or ethylene sulfate: formula (II) wherein X is chlorine, bromine, iodine or a triflate group (CF3SO3) or a group (formula) wherein R is as defined above and G is -CN or -COOR2 wherein R2 is a C1-C4 straight or branched alkyl chain.
Process of preparing derivatives of 1-(2-halobiphenyl-4-yl)-cyclopropanecarboxylic acid
申请人:CHIESI FARMACEUTICI S.p.A.
公开号:EP2133322A1
公开(公告)日:2009-12-16
The invention relates to a process for preparing a compound according to formula (I)
The invention also relates to intermediates useful in the process.
本发明涉及一种制备式(I)化合物的方法,本发明还涉及在该方法中有用的中间体。
PROCESS FOR THE PREPARATION OF DERIVATIVES OF 1-(2-HALOBIPHENYL-4-YL)-CYCLOPROPANECARBOXYLIC ACID