Chemical process for the preparation of benzoxazole...

Details Chemical process for the preparation of benzoxazole... Chemical process for the preparation of benzoxazole...

C - Chemistry, Metallurgy

07

D

C07D 417/12 (2006.01) A01N 43/80 (2006.01)

Patent

CA 2619436

This invention relates to a process for the preparation of compounds of formula (I): where Ra, Rb, R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are defined organic groups, the process comprising reaction a compound of formula (II): with a compound of formula (III): where Rc is as defined in relation to formula (I) followed by treatment with a base and cyclising the resulting adduct.

Cette invention concerne un procédé de fabrication de composés représentés par la formule (I) dans laquelle Ra, Rb, R1, R2, R3, R4, R5, R6, R7, R8, R9, et R10 sont des groupes organiques définis. Ce procédé consiste à faire réagir un composé de formule (II) avec un composé de formule (III) dans laquelle Rc est défini par rapport à la formule (I), suivi d''un traitement avec une base et à cycliser l'adduit résultant.

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