Chloride ion affinities of substituted benzylcations in the gasphase have been determined by means of an ICR mass spectrometer. The substituent effect has been analyzed in terms of the LArSR Eq., giving a ρ=13.6 and an r+=1.31.
PROCESS FOR PREPARING 3, 4-DISUBSTITUTED PHENYLACETIC ACIDS AND NOVEL INTERMEDIATES
申请人:Wiegand John-Matthias
公开号:US20090088584A1
公开(公告)日:2009-04-02
A process for preparing 3,4-disubstituted phenylacetic acids of the formula (I) in which X is fluorine, chlorine, bromine or iodine and R is C
1
-C
4
-alkylthio, C
1
-C
4
-alkylsulfonyl or C
1
-C
4
-alkylsulfoxide, starting from a 2-halo-C
1
-C
4
-alkylthiobenzene of the formula (II) in which X is as defined above and R1 is C
1
-C
4
-alkylthio.
[EN] PROCESS FOR PREPARING 3, 4-DISUBSTITUTED PHENYLACETIC ACIDS AND NOVEL INTERMEDIATES<br/>[FR] PROCÉDÉ DE SYNTHÈSE D'ACIDES PHÉNYLACÉTIQUES 3,4-DISUBSTITUÉS ET NOUVEAUX INTERMÉDIAIRES
申请人:DSM FINE CHEM AUSTRIA GMBH
公开号:WO2007096034A1
公开(公告)日:2007-08-30
[EN] A process for preparing 3,4-disubstituted phenylacetic acids of the formula (I) in which X is fluorine, chlorine, bromine or iodine and R is C1-C4-alkylthio, C1-C4-alkylsulfonyl or C1-C4-alkylsulfoxide, starting from a 2-halo-C1-C4-alkylthiobenzene of the formula (II) in which X is as defined above and R1 is C1-C4-alkylthio. [FR] La présente invention concerne un procédé de synthèse d'acides phénylacétiques 3,4-disubstitués de formule (I), dans laquelle X représente fluor, chlore, brome ou iode et R représente un groupement alkylthio en C1-C4, alkylsulfonyle en C1-C4 ou alkylsulfoxyde en C1-C4, en partant d'un 2-halogéno-(alkyle en C1-C4)thiobenzène de formule (II), X étant tel que défini ci-avant et R1 représentant un groupement alkylthio en C1-C4.