Synthesis and Oxidative Cyclization of 3-(1-Cycloalkenyl)tropolones
3-(1-Cyclopentenyl)-, 3-(1-cyclohexenyl)-, and 3-(1-cycloheptenyl)tropolones (3a, 3b, and 3c) were prepared by the hydrolysis of cycloadducts of dichloroketene to cyclopentylidene-, cyclohexylidene-, and cycloheptylidenecyclopentadiene, respectively.Compo