Abstract A series of novel 10-amino-9-aryl-2, 3, 4, 5, 6, 7, 9, 10-octahydroacridine-1, 8-dione derivatives 4 were synthesized by hydrazine or phenylhydrazine and 9-aryl-1, 8-dioxo-2, 3, 4, 5, 6, 7, 9-heptahydroxanthene derivatives 3, which were prepared by 5-substituted-1, 3- cyclohexanedione 1 and aromatic aldehydes 2 in the presence of concentrated H 2 SO 4 as a catalyst in water. The structures of all compounds were characterized by IR, MS, 1 H- ...
