| abstract |
Process for the preparation of benzo-fused heterocycles of general formula I:in which X, R<1>, R<2>, R<3>, R<4>, R<5 >and n are as defined in claim 1, by reacting tetrahydrobenzo-fused heterocycles of formula II:in which X, R<1>, R<2>, R<3>, R<4>, R<5>, n and Ac are as defined in claim 1, with a catalytic amount of a noble metal catalyst in the presence of a hydrogen acceptor and then deacylating the acylated amino group by the addition of an amine. |