Studies in spiroheterocycles. Part XIII. Synthesis of a novel spiro system: Spiro[9H-acridine-9,3′-[3h]indol]-2′(1′H)-one and related compounds from new fluorinated spiro[3H-indole-3,9′-[9H]xanthen]-2(1H)-ones |
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Authors: | Krishna C Joshi Renuka Jain Anshu Dandia Saroj Garg Nidhal Ahmed |
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Abstract: | A new spiroheterocyclic system spiro9H-acridine-9,3′-3H]indol]-2′(1′H)-one and related compounds have been prepared by the reaction of spiro3H-indole-3,9′-9H]xanthen]-2(1H)-ones with aromatic amine or ammonium acetate. The latter were prepared by heating fluorinated indole-2,3-diones with m-/p-cresols or α-naphthol in the presence of sulphuric acid at 230-240°. The synthesized compounds have been characterized on the basis of their elemental analyses, ir, nmr (1H, 13C, 19F) and mass spectral data. |
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