SYNTHESIS AND MASS FRAGMENTATION PATTERN OF FLUORINATED SPIRO XANTHENE>-1',2,8'(1H,2'H,5'H)-TRIONES

Article abstract of DOI:10.1016/S0022-1139(00)82745-1

Some new fluorine containing spiro-xanthenes and spiro-acridines have been synthesized.Spiro-xanthenes were obtained by the reaction of fluorinated indole-2,3-diones with 1,3-cyclohexadienone by three different routes.Further spiro-xanthenes were treated with ammonium acetate or fluorinated anilines in acetic acid medium resulting in corresponding spiro-acridines.All synthesized compounds have been characterized on the basis of elemental analyses, IR, 1H and 19F NMR and Mass spectral studies.