A series of 1,11-dihydro-2H-[1,3]oxazolo[4′,5′:5,6]indeno[1,2-b]quinolin-2-ones were prepared by means of Friedländer condensations. The starting materials for the preparations were commercial substituted-2-aminoacetophenones and various 5,6-dihydro-2H-indeno[5,6-d][1,3]oxazole-2,7(3H)-diones that were synthesized from 2(3H)-benzoxazolones or their N-methyl analogues.