Process for the preparation of heterocyclic indene analogs

Details Process for the preparation of heterocyclic indene analogs Process for the preparation of heterocyclic indene analogs

C - Chemistry, Metallurgy

07

D

C07D 209/12 (2006.01) C07D 209/88 (2006.01) C07D 405/12 (2006.01)

Patent

CA 2434408

The present invention is concerned with a novel process for the preparation of compounds of formula (I): (see formula I) wherein X is O or N-Z and R1, R2 and Z are as defined in the specification, comprising cyclocarbonylation of a compound of formula (II): (see formula II) wherein X is O or N-Z, and R1, R2, R3 and Z are as defined in the specification, to produce a compound of formula (III) (see formula III) wherein X is O or N-Z, and R1, R2, R4 and Z are as defined in the specification, followed by saponification.

La présente invention concerne un nouveau procédé de préparation de composés de formule (I), dans laquelle R<1>, R<2> et X sont tels que définis dans la description, consistant à réaliser la cyclocarbonylation d'un composé de formule (II), dans laquelle R<1>, R<2>, R<3> et X sont tels que définis dans la description, de sorte à produire un composé de formule (III), dans laquelle R<1>, R<2>, R<4> et X sont tels que définis dans la description, suivie d'une saponification.

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