Fig. 6: Further transformations of indanones.

The indanone 9 was prepared from 1 under standard conditions. The indanone 9 was efficiently transformed to diverse compounds, such as alkene 91, indenone 92, lactone 93, 1-phenyl-2,3-dihydro-1H-indene 94, (E)-2-benzylidene-3-phenyl-2,3-dihydro-1H-inden-1-one 95, and benzocycloheptenone 96, respectively.