The purity of the 3-phenyliriderie (X) precursor wa5 established by oxidation of 3- phenylindene with chromic acid. The only isolated acidic product, although the yield was not quantitative, was the expected 2-benzoylcr-toluic acid.; The nmr spectrum of 3-phenylindene was consistent with the assigned structure and demonstrated the existence of only one component. In addition, the isomeric l-phenylindene6 (XII) was prepared arid was shown ...
