[Syntheses of 1-carboxy-1,2,3,4-tetrahydroisoquinoline derivatives, 6-carboxy-1,2,3,4,4a,5,6,10b-oxtahydrophenanthridine derivatives and 6-carboxy-dibenzo[b, d]pyran derivatives by phenolic cyclization (studies on the syntheses of heterocyclic compounds. DCLXIV) (author's transl)].