The ability of a, &unsaturated ketones to condense with the Grignard reagent4-7 and with aromatic hydrocarbons, &1 in addition to active methylene compounds and halogen acids, suggested that a hindered cyclopropyl ketone might also combine with these reagents. Such reactions would lend additional support to the theory that the three-membered ring can react in a manner analogous to a carbon-carbon double bond when conjugated with a carbonyl ...
