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■ Studies in Spiroheterocycles: Part X: Reactions of Diazomethane with 3-Aroylmethylene-indole-2-ones and Synthesis of Some Novel Fluorine Containing Spiro[cyclopropane-1,3’(3H)indol]2’(1’H)-ones

Krishna C. Joshi, Renuka Jain, and Seema Arora

*Department of Chemistry, University of Rajasthan, Jaipur 302 004, India

Abstract

Reaction of ethereal diazomethane with fluorinated 3-aroylmethylene-indol-2-ones has been investigated for the first time yielding spiro [cyclopropane-1,3’(3H)indol]-2’ (1’H)-ones. The structures of a l l compounds have been confirmed on the basis of elemental analysis, ir, ¹H-nmr and mass fragmentation pattern.