Process

Details Process Process

C - Chemistry, Metallurgy

07

D

C07D 311/74 (2006.01)

Patent

CA 2705512

Compounds of formula I, V, VI and II, and processes for their preparation, wherein R1, R2 and R3 are the same or different and signify hydrogens, halogens, alkyl, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino or dialkylamino group; and R4 is alkyl or aryl. There is also provided a process for preparing a compound of formula B from the compounds of formula V and I.

L'invention porte sur des composés de formules (I, V, VI et II) et sur leur procédé de préparation. Dans lesdites formules: R1, R2 et R3, sont identiques ou différents et représentent des groupes hydrogène, halogène, alkyle, alkyloxy, hydroxy, nitro, alkylcarbonylamino, alkylamino ou dialkylamino; et R4 est alkyle ou aryle. L'invention porte également sur un procédé de préparation d'un composé de formule (B) à partir des composés de formule V et I.

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