C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 205/37 (2006.01) C07C 67/31 (2006.01) C07C 69/712 (2006.01) C07C 201/08 (2006.01) C07C 319/14 (2006.01) C07C 319/20 (2006.01) C07C 323/52 (2006.01) C07D 307/79 (2006.01) C07D 333/54 (2006.01)
Patent
CA 2387713
The invention concerns novel nitroaromatic compounds of general formula (I') wherein: R, R'¿1?, R¿2?, Z and n are as defined in Claim 38. The invention also concerns a method for preparing nitroaromatic compounds nitrated in position 4. The invention further concerns the use of said compounds for preparing heterocyclic benzofuran or benzothiophene derivatives nitrated in position 5. The invention concerns particularly the preparation of 2-alkyl-5-nitrobezofuran.
La présente invention a pour objet de nouveaux composés nitroaromatiques répondant à la formule générale 1 (I') dans laquelle R, R'1, R2, Z et n sont tels que définis dans la revendication 38. Un autre objet de l'invention est un procédé de préparation de composés nitroaromatiques nitrés en position 4. L'invention vise également l'utilisation de ces composés pour la préparation de dérivés hétérocycliques de type benzofurane ou benzothiophène nitrés en position 5. L'invention vise en particulier la préparation de 2-alkyl-5- nitrobenzofurane.
Karrer Philippe
Mettling Armand
Schlama Thierry
Rhodia Chimie
Robic
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