Process for the preparation of benzo-fused heterocycles

Details Process for the preparation of benzo-fused heterocycles Process for the preparation of benzo-fused heterocycles

C - Chemistry, Metallurgy

07

D

C07D 333/68 (2006.01)

Patent

CA 2405720

A method for producing benzo-annelated heterocycles of general formula (I), wherein X, R1, R2, R3, R4, R5 and n have the meaning cited in Claim 1, by reacting tetrahydrobenzo-annelated heterocycles of formula (II), wherein X, R1, R2, R3, R4, R5, n and Ac have the meaning cited in Claim 1, with a catalytic amount of an earth metal catalyst in the presence of a hydrodgen acceptor and subsequently deacylating the acylated amino group by adding an amine.

L'invention concerne un procédé de production d'hétérocycles benzo-annelés, correspondant à la formule générale (I), dans laquelle X, R?1¿, R?2¿, R?3¿, R?4¿, R?5¿ et n correspondent aux définitions données dans la revendication 1, par réaction d'hétérocycles tétrahydrobenzo-annelés correspondant à la formule (II), dans laquelle X, R?1¿, R?2¿, R?3¿, R?4¿, R?5¿, n et Ac correspondent aux définitions données dans la revendication 1, avec une quantité catalytique d'un catalyseur à métal noble, et par désacylation subséquente du groupe amino acylé par addition d'une amine.

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